Microstructure and Mechanical Properties of Ultrafine-Grained Magnesium AZ91 Alloy
2014 ◽
Vol 782
◽
pp. 384-389
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Keyword(s):
Microstructure, mechanical properties, cyclic plastic deformation behavior and fatigue strength of ultrafine-grained (UFG) magnesium alloy AZ91 processed by equal channel angular pressing (ECAP) were investigated. ECAP of originally cast alloy results in development of bimodal structure, improved yield stress, tensile strength and ductility when compared to the as-cast state. Endurance limit based on 107cycles is also improved, however exhibits large scatter. Initiation of fatigue cracks takes place in regions of large grains in the bimodal structure, where the content of Mg17Al12particles is low.
2013 ◽
Vol 592-593
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pp. 805-808
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Keyword(s):
2006 ◽
Vol 503-504
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pp. 31-36
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2008 ◽
Vol 43
(23-24)
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pp. 7409-7417
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Keyword(s):
2021 ◽
Vol 142
◽
pp. 105978
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2017 ◽
Vol 743
◽
pp. 203-206
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2008 ◽
Vol 589
◽
pp. 111-116
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2014 ◽
Vol 891-892
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pp. 1099-1104
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Keyword(s):