Alternative TitleDifferent Fatigue Behaviors of Mg-12Gd-3Y-0. 5Zr Magnesium Alloy
杨晓明; 杨帆; 尹树明; 王渠东; 吴世丁; 张哲峰; 李守新
Source Publication机械工程材料
Other AbstractRoom temperature low cycle fatigue, very high cycle fatigue, high temperature isothermal fatigue and thermo-mechanical fatigue properties of the as-rolled Mg-12Gd-3Y-0. 5Zr magnesium alloy were investigated. The fatigue failure mechanism was analyzed. The results show that for room temperature low cycle fatigue and very high cycle fatigue, the failure was caused by the fatigue cracks resulted from the inclusions or large-sized secondary phases. The cracks initiated from the surface or sub-surface for low cycle fatigue, however, for very .high cycle fatigue the internal cracking was the initiation. Both high temperaturei sothermal fatigue crack and thermo- mechanical fatigue crack originated from the surface. The interaction of cyclic slip and oxide inclusions was the main fatigue mechanism. The alloy had excellent tensile strength and fatigue strength from room temperature to 200℃. The opposed phase thermo-mechanical fatigue lifetime was longer than the in-phase one thermo-mechanical fatigue lifetime.
Keyword镁合金 低周疲劳 超高周疲劳 等温疲劳 热机械疲劳 疲劳机制
Indexed ByCSCD
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Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
杨晓明,杨帆,尹树明,等. Mg-12Gd-3Y-0.5Zr镁合金的不同疲劳行为[J]. 机械工程材料,2011,35.0(004):41-45.
APA 杨晓明.,杨帆.,尹树明.,王渠东.,吴世丁.,...&李守新.(2011).Mg-12Gd-3Y-0.5Zr镁合金的不同疲劳行为.机械工程材料,35.0(004),41-45.
MLA 杨晓明,et al."Mg-12Gd-3Y-0.5Zr镁合金的不同疲劳行为".机械工程材料 35.0.004(2011):41-45.
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