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Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water

Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water

Rotary bending fatigue tests were conducted in laboratory air and distilled water using three extruded magnesium (Mg) alloys AZ80, AZ61, and AM60 with different chemical compositions. In laboratory air, thefatigue strengths at high stress levels were similar in all alloys because cracks initiated at...

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Main Authors: Uematsu, Y., Tokaji, K., Ohashi, T.
Format: Article
Language:English
Published: Інститут проблем міцності ім. Г.С. Писаренко НАН України 2008
Series:Проблемы прочности
Subjects:
Научно-технический раздел
Online Access:http://dspace.nbuv.gov.ua/handle/123456789/48425
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spelling irk-123456789-484252013-08-19T17:03:02Z Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water Uematsu, Y. Tokaji, K. Ohashi, T. Научно-технический раздел Rotary bending fatigue tests were conducted in laboratory air and distilled water using three extruded magnesium (Mg) alloys AZ80, AZ61, and AM60 with different chemical compositions. In laboratory air, thefatigue strengths at high stress levels were similar in all alloys because cracks initiated at Al-Mn intermetallic compounds, whereas AZ80 with the largest Al content exhibited the highestfatigue strength at low stress levels, which was attributed to the crack initiation due to cyclic slip deformation in the matrix microstructure. In distilled water, fatigue strengths were considerably decreased due to theformation of corrosion pits in all alloys, and the difference of fatigue strength at low stress levels among the alloys disappeared, indicating that the addition ofAl that improved the fatigue strength in laboratory air was detrimental to corrosion fatigue. С использованием методики сварки трения были получены соединения двух алюмини­евых сплавов: литого (АС4СН-Т6) и обрабо­танного давлением (А6061-Т6). Исследова­лось влияние микроструктуры и послетепературной обработки на сопротивление усталости различных сварных соединений. Центральная часть зоны сварки характери­зуется более низкими значения твердости по Виккерсу, чем зоны основных металлов, при­ чем минимальные значения твердости были зафиксированы на пути перемещения сва­рочного инструмента. Статическое разруше­ние сварных соединений при растяжении имело место со стороны основного сплава А6061, где твердость была минимальна, при­ чем статическая прочность сварного соеди­нения из разнородных сплавов была ниже, чем у сплавов АС4СН и А6061. Усталостное разрушение имело место для основного сплава АС4СН, что связано с наличием в нем литейных дефектов, причем усталостная прочность сварного соединения из разнород­ных сплавов оказалась такой же, как сплава АС4СН, но ниже, чем сплава А6061. При­ менение методики сварки трением и после- температурной обработки позволило повы­сить усталостную прочность сварных соеди­нений разнородных сплавов до уровня основного сплава А6061. 2008 Article Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water / Y. Uematsu, K. Tokaji, T. Ohashi // Проблемы прочности. — 2008. — № 1. — С. 141-145. — Бібліогр.: 3 назв. — англ. 0556-171X http://dspace.nbuv.gov.ua/handle/123456789/48425 539.4 en Проблемы прочности Інститут проблем міцності ім. Г.С. Писаренко НАН України
institution Digital Library of Periodicals of National Academy of Sciences of Ukraine
collection DSpace DC
language English
topic Научно-технический раздел
Научно-технический раздел
spellingShingle Научно-технический раздел
Научно-технический раздел
Uematsu, Y.
Tokaji, K.
Ohashi, T.
Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water
Проблемы прочности
description Rotary bending fatigue tests were conducted in laboratory air and distilled water using three extruded magnesium (Mg) alloys AZ80, AZ61, and AM60 with different chemical compositions. In laboratory air, thefatigue strengths at high stress levels were similar in all alloys because cracks initiated at Al-Mn intermetallic compounds, whereas AZ80 with the largest Al content exhibited the highestfatigue strength at low stress levels, which was attributed to the crack initiation due to cyclic slip deformation in the matrix microstructure. In distilled water, fatigue strengths were considerably decreased due to theformation of corrosion pits in all alloys, and the difference of fatigue strength at low stress levels among the alloys disappeared, indicating that the addition ofAl that improved the fatigue strength in laboratory air was detrimental to corrosion fatigue.
format Article
author Uematsu, Y.
Tokaji, K.
Ohashi, T.
author_facet Uematsu, Y.
Tokaji, K.
Ohashi, T.
author_sort Uematsu, Y.
title Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water
title_short Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water
title_full Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water
title_fullStr Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water
title_full_unstemmed Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water
title_sort corrosion fatigue behavior of extruded az80, az61, and am60 magnesium alloys in distilled water
publisher Інститут проблем міцності ім. Г.С. Писаренко НАН України
publishDate 2008
topic_facet Научно-технический раздел
url http://dspace.nbuv.gov.ua/handle/123456789/48425
citation_txt Corrosion fatigue behavior of extruded AZ80, AZ61, and AM60 magnesium alloys in distilled water / Y. Uematsu, K. Tokaji, T. Ohashi // Проблемы прочности. — 2008. — № 1. — С. 141-145. — Бібліогр.: 3 назв. — англ.
series Проблемы прочности
work_keys_str_mv AT uematsuy corrosionfatiguebehaviorofextrudedaz80az61andam60magnesiumalloysindistilledwater
AT tokajik corrosionfatiguebehaviorofextrudedaz80az61andam60magnesiumalloysindistilledwater
AT ohashit corrosionfatiguebehaviorofextrudedaz80az61andam60magnesiumalloysindistilledwater
first_indexed 2023-10-18T18:09:36Z
last_indexed 2023-10-18T18:09:36Z
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