吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (1): 172-180.doi: 10.13229/j.cnki.jdxbgxb20190869
• 材料科学与工程 • 上一篇
Fan YANG1(),Xu-dong ZHANG1(),Meng ZHAO2,Bo SHE1,Jun-kai DENG2
摘要:
利用有限元模拟方法,研究了拉伸-卸载预应变对形状记忆合金-金属玻璃复合材料力学行为的影响及其内在机理。结果表明:预处理应变增加,形状记忆合金-金属玻璃复合材料的屈服强度及弹性应变极限均提高,但拉伸延展性急剧下降。预应变增加导致形状记忆合金颗粒第二次加载时的变形行为由典型的马氏体相变过渡为连续的马氏体相变,甚至表现为纯马氏体相的弹性变形。这一“相变效应”的减弱甚至消失,是形状记忆合金-金属玻璃复合材料经拉伸-卸载预处理后拉伸性能退化的直接原因。
中图分类号:
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