Tension–compression asymmetry of stress-induced transformations in martensitic Cu-12 wt.% Al alloys
Tension–compression asymmetry of stress-induced transformations in martensitic Cu-12 wt.% Al alloys
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DOI：
10.1016/j.matlet.2012.03.088
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发表时间：
2012-07
影响因子：
3
通讯作者：
Haiyou Huang;Jin-Ping Liu;Y. D. Wang;Xuefeng Liu;Jian-Xin Xie
中科院分区：
文献类型：
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作者：
Haiyou Huang;Jin-Ping Liu;Y. D. Wang;Xuefeng Liu;Jian-Xin Xie
研究了热连铸制备的β1‘马氏体Cu-12wt.%Al合金的室温拉伸和压缩力学行为，该合金具有<；001>；β1or<；011>；β1取向。在试件中观察到取向相关的拉伸-压缩不对称性。在不同取向和不同加载条件下的试件中也观察到了不同的应力诱发马氏体-马氏体相变。合金力学行为的各向异性和非对称性与应力诱导相变的取向依赖性和非对称性密切相关。根据建立的应力诱发相变模型计算了相变应变，并讨论了合金的变形机制，以解释变形行为。
The room temperature tensile and compressive mechanical behaviors of a β1′ martensitic Cu-12wt.% Al alloy with <001>β1or <011>β1orientation fabricated by Ohno continuous casting were investigated. An orientation-dependent tension–compression asymmetry was observed in the specimens. The various stress-induced martensite–martensite transformations were also observed in the specimens with different orientations or under different loading conditions. The anisotropy and asymmetry of mechanical behaviors of the alloy are closely related to the orientation dependence and the asymmetry of the stress-induced phase transformation. The transformation strains which were calculated based on a developed stress-induced phase transformation model and deformation mechanism of the alloy were discussed to explain the deformation behaviors.