童宇健,刘记立,李喜德,李江

• 1:武汉理工大学物理与力学学院

摘要(Abstract)：

采用可控放电等离子烧结工艺制备了Fe-34Mn-xAl-4Cr-7.5Ni(x=13、14和15, at%)形状记忆合金，研究了Al含量及900和1230℃淬火温度对合金微观组织、超弹性和压缩力学性能温度稳定性的影响。结果表明：随着Al含量的增加，1230℃淬火态合金的超弹性、硬度等显著提升，并表现出良好的力学性能温度稳定性；13Al-1230℃、14Al-1230℃和15Al-1230℃样品的超弹性回复分别为0.46%、0.51%和0.59%;此外，13Al-1230℃、14Al-1230℃和15Al-1230℃样品的屈服强度随温度的变化率分别为-0.081、-0.0076和-0.032 MPa/K。

关键词(KeyWords)： Fe-Mn-Al-Cr-Ni形状记忆合金;放电等离子烧结;超弹性;温度稳定性

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51974217)

作者(Author): 童宇健,刘记立,李喜德,李江

DOI: 10.13289/j.issn.1009-6264.2025-0058

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