FeCoNiCrAl系高熵合金强度和塑性研究综述
Review of Research on Strength and Plasticity of FeCoNiCrAl High-entropy Alloy
李昀峰 1张克国 1焦仁杰 1李彬1
作者信息
摘要
不同主元原子尺寸的差异导致高熵合金的塑性变形机理复杂,虽然独特的结构特点和优异的性能使其具有广泛的应用前景,但切削性能研究的不足限制了高熵合金的工程应用拓展.强度和塑性对高熵合金切削性能的影响最为显著,因此本文综述了热处理工艺、元素配比和制备工艺对FeCoNiCrAl系高熵合金塑性、强度的影响,旨在明确高熵合金塑性、强度的影响参数,为高熵合金材料的设计及切削加工提供支撑.研究发现:合适的热处理温度、保温时间和冷却方法都会改变合金切削性能,向使用真空电弧熔炼法获得的合金中添加Al,Cr,Ti,V,Nb,Mo,Si能使合金的强度提高,塑性下降;添加Ni,C会使合金强度下降,塑性上升;通过参数调整使合金达到工程要求可行.
Abstract
Although the unique structural characteristics and excellent properties make it have a wide range of appli-cation prospects,the lack of cutting performance research limits the expansion of high-entropy alloy(HEA)engineering ap-plications.The influence of strength and plasticity on the machining properties of HEA is the most significant factor.There-fore,the effect of heat treatment,element ratio and manufacturing technology on plasticity and strength of FeCoNiCrAl HEA is summarized.It's found that appropriate heat treatment temperature,holding time and cooling method can change the al-loy's cutting performance.Adding Al,Cr,Ti,V,Nb,Mo,Si to the alloy using vacuum arc melting method can improve the strength and decrease the plasticity.The addition of Ni and C can reduce the strength and increase the plasticity,so it's fea-sible to adjust these parameters to make it meet the engineering requirements.
关键词
高熵合金/强度/塑性/切削性能Key words
high-entropy alloy/strength/plasticity/cutting performance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据