Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process
The effect of the deformation and size of crystals of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process is studied. For the synthesis of composite powders W-xTi (x = 4.0 and 10.0 wt.%), The mechanical alloying process was carried out in a S...
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| Дата: | 2018 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2018
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| Назва видання: | Functional Materials |
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| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/157140 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process / H. Jahangiri, M.L. Ovecoglu // Functional Materials. — 2018. — Т. 25, № 2. — С. 313-318. — Бібліогр.: 21 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| id |
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irk-123456789-1571402019-06-20T01:27:35Z Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process Jahangiri, H. Ovecoglu, M.L. Characterization and properties The effect of the deformation and size of crystals of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process is studied. For the synthesis of composite powders W-xTi (x = 4.0 and 10.0 wt.%), The mechanical alloying process was carried out in a SpexTM Duo Mixer/Mill 8000D under an argon atmosphere for 20 h. The density and size of he crystallites/powders were measured before and after the quenching process. The measurements were carried out by a helical pycnometer and Lorentz methods in combination with XRD. Sintered bulk composites were characterized under the same conditions. Samples made by hardened powders did not fully cake. The relative density of sintered samples obtained from non-carbon powders was higher (97.19 %). In contrast, samples made from heat-treated powders had smaller crystallite sizes and lower densities (80.50 %). It is shown that the preheating of mechanically doped powders adversely affects the sintering of composite powders during the compaction process. 2018 Article Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process / H. Jahangiri, M.L. Ovecoglu // Functional Materials. — 2018. — Т. 25, № 2. — С. 313-318. — Бібліогр.: 21 назв. — англ. 1027-5495 DOI:https://doi.org/10.15407/fm25.02.313 http://dspace.nbuv.gov.ua/handle/123456789/157140 en Functional Materials НТК «Інститут монокристалів» НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| topic |
Characterization and properties Characterization and properties |
| spellingShingle |
Characterization and properties Characterization and properties Jahangiri, H. Ovecoglu, M.L. Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process Functional Materials |
| description |
The effect of the deformation and size of crystals of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process is studied. For the synthesis of composite powders W-xTi (x = 4.0 and 10.0 wt.%), The mechanical alloying process was carried out in a SpexTM Duo Mixer/Mill 8000D under an argon atmosphere for 20 h. The density and size of he crystallites/powders were measured before and after the quenching process. The measurements were carried out by a helical pycnometer and Lorentz methods in combination with XRD. Sintered bulk composites were characterized under the same conditions. Samples made by hardened powders did not fully cake. The relative density of sintered samples obtained from non-carbon powders was higher (97.19 %). In contrast, samples made from heat-treated powders had smaller crystallite sizes and lower densities (80.50 %). It is shown that the preheating of mechanically doped powders adversely affects the sintering of composite powders during the compaction process. |
| format |
Article |
| author |
Jahangiri, H. Ovecoglu, M.L. |
| author_facet |
Jahangiri, H. Ovecoglu, M.L. |
| author_sort |
Jahangiri, H. |
| title |
Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process |
| title_short |
Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process |
| title_full |
Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process |
| title_fullStr |
Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process |
| title_full_unstemmed |
Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process |
| title_sort |
effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process |
| publisher |
НТК «Інститут монокристалів» НАН України |
| publishDate |
2018 |
| topic_facet |
Characterization and properties |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/157140 |
| citation_txt |
Effect of deformation and crystal size of mechanically alloyed and tempered composite tungsten powders with titanium additives on the sintering process / H. Jahangiri, M.L. Ovecoglu // Functional Materials. — 2018. — Т. 25, № 2. — С. 313-318. — Бібліогр.: 21 назв. — англ. |
| series |
Functional Materials |
| work_keys_str_mv |
AT jahangirih effectofdeformationandcrystalsizeofmechanicallyalloyedandtemperedcompositetungstenpowderswithtitaniumadditivesonthesinteringprocess AT ovecogluml effectofdeformationandcrystalsizeofmechanicallyalloyedandtemperedcompositetungstenpowderswithtitaniumadditivesonthesinteringprocess |
| first_indexed |
2023-05-20T17:51:02Z |
| last_indexed |
2023-05-20T17:51:02Z |
| _version_ |
1796154236974661632 |