Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon
The deformation and fracture behavior of Zr50Ti165Cu15Ni185 bulk amorphous metal in the form of a thin ribbon have been determined in tensile test at room temperature. The fracture is localized in a major shear band and the fracture angle between the tensile stress axis and the fracture plane is clo...
Gespeichert in:
| Veröffentlicht in: | Проблемы прочности |
|---|---|
| Datum: | 2008 |
| Hauptverfasser: | , , , , , |
| Format: | Artikel |
| Sprache: | Englisch |
| Veröffentlicht: |
Інститут проблем міцності ім. Г.С. Писаренко НАН України
2008
|
| Schlagworte: | |
| Online Zugang: | https://nasplib.isofts.kiev.ua/handle/123456789/48411 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon / J. Miskuf, K. Csach, A. Jurikova, V. Ocelfk, V. Bengus, E. Tabachnikova // Проблемы прочности. — 2008. — № 1. — С. 28-31. — Бібліогр.: 15 назв. — англ. |
Institution
Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1860050869597241344 |
|---|---|
| author | Miskuf, J. Csach, K. Jurikova, A. Ocelik, V. Bengus, V. Tabachnikova, E. |
| author_facet | Miskuf, J. Csach, K. Jurikova, A. Ocelik, V. Bengus, V. Tabachnikova, E. |
| citation_txt | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon / J. Miskuf, K. Csach, A. Jurikova, V. Ocelfk, V. Bengus, E. Tabachnikova // Проблемы прочности. — 2008. — № 1. — С. 28-31. — Бібліогр.: 15 назв. — англ. |
| collection | DSpace DC |
| container_title | Проблемы прочности |
| description | The deformation and fracture behavior of Zr50Ti165Cu15Ni185 bulk amorphous metal in the form of a thin ribbon have been determined in tensile test at room temperature. The fracture is localized in a major shear band and the fracture angle between the tensile stress axis and the fracture plane is close to 45°. Fractographic observations have revealed that the fracture surface of the amorphous metallic glass consists mainly of a vein-like pattern morphology We present a scheme of three zones of fracture surface morphology: progressive smooth sliding region (A), dominating vein like pattern (B), and river-like ripples (C).
Исследованы особенности деформирования и разрушения массивного аморфного металла 2г50Т116.5Си15№185 в виде тонкой ленты при испытании на растяжение при комнатной температуре. Разрушение локализуется в главной полосе сдвига, при этом угол разрушения между осью растягивающего напряжения и плоскостью разрушения близок к 45°. Фрактографические исследования показали, что поверхность излома аморфного металлического стекла состоит в основном из жильной морфологии. Приведена схема трех зон морфологии поверхности излома: область последовательного непрерывного скольжения (А), преобладающая жильная структура (В) и “речная” рябь (С).
|
| first_indexed | 2025-12-07T16:59:41Z |
| format | Article |
| fulltext |
UDC 539. 4
F a ilu r e o f Z r 50T i16.5C u 15N i18.5 A m o r p h o u s M e ta l l ic R ib b o n
J. M isk u f,1a K . C sach ,1b A . J u r ik o v a ,1c V . O celfk ,2d V . B en gu s ,3 e
and E . T ab ach n ik ova3,f
1 Institute o f Experimental Physics, Slovakia Academy o f Sciences, Kosice, Slovakia
2 Department of Applied Physics, Materials Science Centre and Netherlands Institute o f Metals
Research, University o f Groningen, Groningen, The Netherlands
3 Verkin Institute for Low Temperature Physics & Eng. UAS, Kharkov, Ukraine
a miskuf@saske.sk, b csach@saske.sk, c akasard@saske.sk, d v.ocelik@rug.nl,
e bengus@ilt.kharkov.ua, f tabachnikova@ilt.kharkov.ua
The deformation and fracture behavior o f Zr50Ti165Cu15Ni185 bulk amorphous metal in the form o f a
thin ribbon have been determined in tensile test at room temperature. The fracture is localized in a
major shear band and the fracture angle between the tensile stress axis and the fracture plane is
close to 45°. Fractographic observations have revealed that the fracture surface o f the amorphous
metallic glass consists mainly o f a vein-like pattern morphology We present a scheme o f three
zones o f fracture surface morphology: progressive smooth sliding region (A), dominating vein like
pattern (B), and river-like ripples (C)
K eyw o rd s : fracture, bulk amorphous alloy, vein -like pattern.
In trod uction . Am orphous m etallic alloys in the form o f ribbons w ith thickness less
than 50 fxm are prepared by rapid m elt quenching on a rotating disc [1]. The deform ation
o f m etallic glass is inhom ogeneous in nature at low er temperatures. O w ing to the absence
o f the long-range order, amorphous m etallic alloys exhibit a very h igh y ield stress
resulting in a very large accum ulation o f strain energy [2]. These glasses show very little
plasticity under tensile loading. Recently, several m ulti-com ponent m etallic alloys w ith an
excellent glass form ing ability have been reported. R educed cooling rates are sufficient to
achieve bulk sam ples in the amorphous state (e.g ., rods a few m illim eters in diameter) [3].
We present the fracture surface analysis o f an amorphous ribbon prepared from the
Z r-T i-C u -N i type o f alloy, capable o f achieving amorphous structure at low er cooling
rates.
E xp erim en ta l. Sam ples m ade from a bulk amorphous a lloy w ith the nom inal
com position o f Zr50Ti16.5C u15N i18 5 (at.%) were used in the experim ents. The 300 ,«m thick
and 3 -5 m m w ide amorphous ribbons w ere prepared by rapid m elt quenching on a
spinning m etallic disc. The thickness o f the prepared ribbon substantially exceeds the
m axim um thickness o f ribbons prepared from standard amorphous alloys. The amorphous
structure o f a sam ple w as confirm ed b y X -ray diffraction. Structure properties were
characterized by differential scanning calorimetry (Perkin Elmer D SC 7). Ribbons were
fractured by a tensile test on the m achine w ith the stiffness o f 10 kN /m m , the deform ation_3 _1
rate being 2 . 6 -10 s at 300 K. A scanning electron m icroscope Tesla B S 340 w as used
for fractographic observations.
R esu lts and D iscussion . A w ide temperature region o f undercooled liquid state
above the glass transition temperature Tg (592 K) up to the crystallization temperature
Tx (629 K) is typical for the amorphous a lloy Zr50T i16.5Cu15N i1g.5 as demonstrated by the
D SC thermogram in Fig. 1. The ribbon sam ples w ere loaded under uniaxial tension. The
measured fracture stress w as 1.53 ± 0 .1 5 GPa w hich is similar to that reported in [4, 5].
_3 _1The stress-strain curve for Z ^ T i^ .sC u ^ N i^ .s at a strain rate o f 2 .6 -1 0 s at 300 K
under uniaxial tension is show n in Fig. 1 on the right side. M ultiple serrations were
© J. M ISKUF, K. CSACH, A. JURIKOVA, V. OCELIK, V. BENGUS, E. TABACHNIKOVA, 2008
28 ISSN 0556-171X. Проблемы прочности, 2008, N 1
mailto:miskuf@saske.sk
mailto:csach@saske.sk
mailto:akasard@saske.sk
mailto:v.ocelik@rug.nl
mailto:bengus@ilt.kharkov.ua
mailto:tabachnikova@ilt.kharkov.ua
Failure o f Zr50Ti16.5Cu15Ni18.5 Amorphous M etallic Ribbon
observed prior to failure. The origin o f the serrated flow in m etallic g lasses is still unclear,
it is defin itely related to the formation o f shear bands. The formation o f the individual
shear band is m anifested in a single serration and all o f the w ork done in producing the
shear band is dissipated as heat [6 ].
Fig. 1. DSC trace of Zr50Ti165Cu15N i185 at a heating rate o f 20 K/min (a). Stress-strain curve at
strain rate o f 2 .6 -10_3 s_1 under uniaxial tension at temperature 300 K (b).
The observed m acroscopic plastic deform ation w as just about 0.5%. The fracture is
localized in a major shear band and the fracture angle betw een the tensile stress axis and
the fracture plane is c lose to 45° - the failure in the m axim um shear stress plane. The
reduced free volum e results in the deviation o f the shear banding direction from the
m axim um shear stress [7].
The m ain fracture surface feature observed w as the vein pattern m orphology created
by the process o f m eniscus instability [8 ]. A ridge (vein) on the fracture surface results
from a connection o f tw o adjacent cavities that grow under the action o f external stress.
Such a vein pattern m orphology show s a mirror im age on tw o opposite sides o f the
created fracture surface.
The left side o f the fracture surface presented in Fig. 2a show s a vein free area
form ed during an initial stage o f the local shear at the w heel side o f the ribbon. This area
corresponds to zone A o f the schem e show n on the right side o f Fig. 2. The schem e
sum marizes all typical features observed on the fracture surface o f 300 jum thick
amorphous ribbons w ith a w ide undercooled liquid state region and fractured by ductile
shear failure.
Fig. 2. Fracture surface in the vicinity of a sample edge. An intensive shear near the edge of the
fracture surface (a) and the scheme o f areas with three characteristic morphologies observed on the
fracture surface o f a 300 /im thick amorphous ribbon (b).
ISSN 0556-171X. n poôëeu u npouuocmu, 2008, № 1 29
J. M iskuf K. Csach, A. Jurikovâ, et al.
For standard amorphous m etallic alloys in the form o f ribbons the failure is initiated
m ostly at surfaces and on ly occasionally at extraneous particles or intersections o f shear
bands [9]. O n the fracture surface o f a 300 fxm thick ribbon w e observed the areas w ith
radial veins. These radial veins com e out from the central flat area as Fig. 3a clearly
shows.
Similar m orphology o f radial veins w as observed on Zr59Cu20A l10N igTi3 bulk
amorphous alloy failed in tensile m ode [10]. The fracture nucleates at the central flat part
as a consequence o f tw o processes: (i) the nucleation and (ii) the propagation o f cores. A
subsequent cavity growth proceeds through the form ation o f radial veins w hich becom e
finally linked to the m ain vein around the w hole ce ll - Fig. 3a. The cell contains a flat and
radial parts enclosed w ith secondary vein rings o f a cellular unit. N o extraneous particles
or visib le defects are present at flat centers.
a b
Fig. 3. Cellular vein-like morphology together with areas o f radial primary veins - zone B (a).
“River morphology o f fracture surface” corresponding to zone C o f the scheme in Fig. 2b.
The fractographic analysis o f ductile shear failure o f a 300 /xm thick amorphous
m etallic ribbon has show n that its m orphologic characteristics are close to the features
observed on the ductile fracture surface o f bulk amorphous m etallic materials in a w ide
variety o f forms [9]. The fracture surface is form ed through the m eniscus instability
process inside an adiabatic thin shear band.
A com plex stress field at the final fracture stage forms distinct re lie f structures on
the fracture surface w ith a number o f aligned veins. The re lie f fracture surface contains
ridges w ith the m ain vein at their tops and ditches betw een them - Fig. 3b. A ligned
primary veins propagate from the rivers to the ridges and link into the m ain one. This type
o f the vein organization observed on the fracture surface o f Pd40Cu30N i10P20 bulk
amorphous alloy is called the river m orphology o f fracture surface [11]. Similar fracture
surface m orphology o f Zr-based bulk m etallic glass matrix com posites and C u-based bulk
glass after com pression testing w as observed in [12]. H ow ever, the round cores w ith radial
veins w ere also observed in com pression at elevated temperatures [13].
The tensile failure criterion [14] indicates that tensile failure is controlled by both the
normal stress o and the shear stress r (where o 0 is the normal fracture stress and r 0 is
the shear fracture stress):
2 2o 2 r 2
- 1 (1)
o 0 r 0
H ow ever, the dependence o f the shear stress x on the normal stress o is not linear
as the M ohr-C oulom b criterion. The influence o f the normal stress presence during the
creation o f zones B and C at failure causes the principal difference in the fracture surface
30 ISSN 0556-171X. npoôëeubi npounocmu, 2008, № 1
Failure o f Zr50Ti16.5Cu15Ni185 Amorphous M etallic Ribbon
m orphology betw een zone A and zones B and C. The sm ooth surface o f zone A created
under the pure shear stress at the first stage becom es, due to increasing normal stress,
more multifarious (zone B). The increased influence o f the normal stress in final stages o f
deform ation and failure and more com plex deform ation conditions associated w ith
serration on the loading-deform ation curve leads to higher surface profile w ith ripples
(zone C). Sim ilar distinguishing o f fracture stages in the case o f a polym er failure was
described in [15].
The results suggest that the catastrophic fracture is no longer a pure shear process,
w hereas the normal stress p lays a remarkable role.
C onclusions. The fractographic analysis o f the fracture surface o f Zr50Ti16.5Cu15N i18.5
amorphous m etallic a lloy in the form o f a 300 fxm thick ribbon fractured in tensile tests
reveals the presence o f shear failure by the m eniscus instability m echanism . Features
similar to the fracture m orphology o f bulk amorphous alloys are formed in the catastrophic
shear band and presented on the fracture surface.
We have described three different distinct pattern m orphologies. Primary progressive
sliding in the first region (A ) is fo llow ed by the general fracture that consists o f tw o
regions. The presence o f the vein -like pattern w ith frequent radial ve in forms is typical o f
the second fracture region (B). The last - third - region o f the fracture surface (C) has a
more pronounced re lie f and is covered w ith a river-like pattern. The vein -like pattern o f
the second region covers a dominant part o f the final fracture surface.
Acknowledgment. This work was supported by the Slovak Grant Agency for Science -
VEGA.
1. P. Duhaj, P. Svec, E. Majkova, et al., Mater. Sci. Eng., A133, 662 (1990).
2. Y. Zhang and A. L. Greer, Appl. Phys. Lett., 89, art. 071907 (2006).
3. A. Inoue, T. Zhang, and T. Masumoto, Mater. Trans. JIM, 31, 177 (1990).
4. G. Abrosimova, A. Aronin, D. Matveev, et al., J. Mater. Sci., 36, 3933 (2001).
5. W. Zhang and A. Inoue, Scripta Mater., 48, 641 (2003).
6 . W. J. Wright, R. B. Schwarz, and W. D. Nix, Mat. Sci. Eng., A319-A321, 229 (2001).
7. W. H. Jiang, G. J. Fan, F. X. Liu, et al., J. Mat. Res., 21, No. 9, 2164 (2006).
8 . F. Spaepen, Acta Metall., 23, 615 (1975).
9. V. Z. Bengus, E. D. Tabachnikova, J. Miskuf, et al., J. Mat. Sci., 35, 4449 (2000).
10. Z. F. Zhang, J. Eckert, and L. Schultz, Acta Mater., 51, 1167 (2003).
11. Ch. Ma and A. Inoue, Mater. Trans. JIM, 43, 3266 (2002).
12. M. Kusy, U. Kuhn, A. Concustell, et al., Intermetallics, 14, 982 (2006).
13. G. Wang, J. Shen, J. F. Sun, et al., Mat. Sci. Eng., A398, 82 (2005).
14. Z. F. Zhang and J. Eckert, Phys. Rev. Lett., 94, art. 094301 (2005).
15. J. Fineberg, S. P. Gross, M. Marder, and H. L. Swinney, Phys. Rev. Lett., 67, No. 4, 457
(1991).
Received 28. 06. 2007
ISSN 0556-171X. npo6neMbi npouuocmu, 2008, № 1 31
|
| id | nasplib_isofts_kiev_ua-123456789-48411 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 0556-171X |
| language | English |
| last_indexed | 2025-12-07T16:59:41Z |
| publishDate | 2008 |
| publisher | Інститут проблем міцності ім. Г.С. Писаренко НАН України |
| record_format | dspace |
| spelling | Miskuf, J. Csach, K. Jurikova, A. Ocelik, V. Bengus, V. Tabachnikova, E. 2013-08-19T12:47:12Z 2013-08-19T12:47:12Z 2008 Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon / J. Miskuf, K. Csach, A. Jurikova, V. Ocelfk, V. Bengus, E. Tabachnikova // Проблемы прочности. — 2008. — № 1. — С. 28-31. — Бібліогр.: 15 назв. — англ. 0556-171X https://nasplib.isofts.kiev.ua/handle/123456789/48411 539. 4 The deformation and fracture behavior of Zr50Ti165Cu15Ni185 bulk amorphous metal in the form of a thin ribbon have been determined in tensile test at room temperature. The fracture is localized in a major shear band and the fracture angle between the tensile stress axis and the fracture plane is close to 45°. Fractographic observations have revealed that the fracture surface of the amorphous metallic glass consists mainly of a vein-like pattern morphology We present a scheme of three zones of fracture surface morphology: progressive smooth sliding region (A), dominating vein like pattern (B), and river-like ripples (C). Исследованы особенности деформирования и разрушения массивного аморфного металла 2г50Т116.5Си15№185 в виде тонкой ленты при испытании на растяжение при комнатной температуре. Разрушение локализуется в главной полосе сдвига, при этом угол разрушения между осью растягивающего напряжения и плоскостью разрушения близок к 45°. Фрактографические исследования показали, что поверхность излома аморфного металлического стекла состоит в основном из жильной морфологии. Приведена схема трех зон морфологии поверхности излома: область последовательного непрерывного скольжения (А), преобладающая жильная структура (В) и “речная” рябь (С). This work was supported by the Slovak Grant Agency for Science - VEGA. en Інститут проблем міцності ім. Г.С. Писаренко НАН України Проблемы прочности Научно-технический раздел Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon Разрушение аморфной металлической ленты из Zr5o Tii6.5 Cui5 Nii8.5 Article published earlier |
| spellingShingle | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon Miskuf, J. Csach, K. Jurikova, A. Ocelik, V. Bengus, V. Tabachnikova, E. Научно-технический раздел |
| title | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon |
| title_alt | Разрушение аморфной металлической ленты из Zr5o Tii6.5 Cui5 Nii8.5 |
| title_full | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon |
| title_fullStr | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon |
| title_full_unstemmed | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon |
| title_short | Failure of Zr50 Ti16.5 Cu15 Ni18.5 amorphous metallic ribbon |
| title_sort | failure of zr50 ti16.5 cu15 ni18.5 amorphous metallic ribbon |
| topic | Научно-технический раздел |
| topic_facet | Научно-технический раздел |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/48411 |
| work_keys_str_mv | AT miskufj failureofzr50ti165cu15ni185amorphousmetallicribbon AT csachk failureofzr50ti165cu15ni185amorphousmetallicribbon AT jurikovaa failureofzr50ti165cu15ni185amorphousmetallicribbon AT ocelikv failureofzr50ti165cu15ni185amorphousmetallicribbon AT bengusv failureofzr50ti165cu15ni185amorphousmetallicribbon AT tabachnikovae failureofzr50ti165cu15ni185amorphousmetallicribbon AT miskufj razrušenieamorfnoimetalličeskoilentyizzr5otii65cui5nii85 AT csachk razrušenieamorfnoimetalličeskoilentyizzr5otii65cui5nii85 AT jurikovaa razrušenieamorfnoimetalličeskoilentyizzr5otii65cui5nii85 AT ocelikv razrušenieamorfnoimetalličeskoilentyizzr5otii65cui5nii85 AT bengusv razrušenieamorfnoimetalličeskoilentyizzr5otii65cui5nii85 AT tabachnikovae razrušenieamorfnoimetalličeskoilentyizzr5otii65cui5nii85 |