高熵形状记忆合金相变行为研究现状

Research status of phase transformation behavior of high entropy shape memory alloys

摘要:

随着先进工程技术对形状记忆合金性能要求的不断提高,传统形状记忆合金愈发难以满足要求,高熵形状记忆合金应运而生,引起了研究者的极大关注。高熵形状记忆合金相较于传统形状记忆合金具有显著提高的可回复应变、屈服强度、高温物相稳定性和超弹性等特性,具有广阔的应用前景。本文对高熵形状记忆合金的研究现状、马氏体相变和形状记忆效应等进行了简要的论述,并对高熵形状记忆合金目前存在的不足和未来的发展进行了展望。

Abstract:

With the continuous improvement of the requirements of advanced engineering technology on the performance of shape memory alloys, traditional shape memory alloys are increasingly difficult to meet the requirements. High entropy shape memory alloys have emerged as the times require, which has attracted great attention of researchers.Compared with traditional shape memory alloys, high entropy shape memory alloys have significantly improved recoverable strain, yield strength,high temperature phase stability and hyperelasticity, and have broad application prospects. In this paper, the research status, martensitic transformation and shape memory effect of high entropy shape memory alloys are briefly reviewed,and the existing shortcomings and future development of high entropy shape memory alloys are prospected.