摘要
高熵合金(High-Entropy Alloys,HEAs)因其优异的力学性能、耐热性、耐腐蚀性,引起了广泛的关注。传统制备工艺以电弧熔炼为主,存在形状单一,尺寸受限,容易偏析等问题,限制了高熵合金的理论研究和工业化制造应用,而增材制造技术凭借高能量密度的输入可以实现结构复杂、尺寸更大的高熵合金的快速熔化凝固成形。详细列出了近年来增材制造技术制备高熵合金的研究,重点阐述了国内外使用增材制造技术制备高熵合金进行的组织演化、耐热性、耐腐蚀性、力学性能、成分设计等方面的研究。总结了近年来增材制造高熵合金的研究进展以及多种高熵合金制备方法的特点,并探讨了未来增材制造高熵合金的发展方向。
High-entropy alloys(HEAs)have aroused extensive attention because of the excellent mechanical properties,heat resistance and corrosion resistance.Arc smelting,as the main process in the traditional preparation,has the problems such as single shape,limited size and easy segregation,which limits the theoretical research and industrial manufacturing applications of high-entropy alloys.However,the additive manufacturing technology can realize the rapid melting and solidification of high-entropy alloys with complex structure and larger sizes by the input of high energy density.The research on the preparation of high-entropy alloys by additive manufacturing technology in recent years was reviewed in detail,focusing on the structural evolution,heat resistance,corrosion resistance,mechanical properties and composition design of high-entropy alloys by additive manufacturing technology at home and abroad.The research progress in additive manufacturing high-entropy alloy in recent years and the characteristics of various high-entropy alloy preparation methods were summarized,and the prospective development direction of additive manufacturing high-entropy alloy was discussed.
作者
张航
陈子豪
何垚垚
李青宇
李涤尘
Zhang Hang;Chen Zihao;He Yaoyao;Li Qingyu;Li Dichen(School of Mechanical Engineering,Xi’an Jiaotong University;State Key Laboratory of Mechanical Manufacturing System Engineering,Xi’an Jiaotong University)
出处
《特种铸造及有色合金》
CAS
北大核心
2020年第12期1314-1322,共9页
Special Casting & Nonferrous Alloys
关键词
增材制造
高熵合金
制备方法
发展方向
Additive Manufacturing
High-Entropy Alloy
Preparation Method
Development Direction
作者简介
第一作者:张航,男,1985年出生,副教授,西安(710049),电话:13759901260,E-mail:zhanghangmu@mail.xjtu.edu.cn。
