摘要
基于晶体塑性有限元框架,构建了可描述3级析出相结构CoCrNiSi_(0.3)C_(0.048)中熵合金在动态压缩下力学行为的建模方法。在3000 s-1应变率的加载条件下,研究了随机、高斯、旋转高斯、立方、铜型、黄铜等不同初始织构对应力-应变响应的影响。研究结果表明:随机织构和铜型织构在动态压缩下表现出较高的屈服强度和优异的塑性变形能力,而立方织构的综合性能相对较差。高应变速率下,析出相明显影响材料的强化作用;通过对屈服强度、塑性变形能力和硬化行为的综合分析,揭示了不同初始织构在高应变速率下对变形的影响,为含析出相高熵合金的优化设计和实际应用提供了科学依据。
Based on the Crystal Plasticity Finite Element(CPFEM)framework,a modeling method for describing the mechanical behavior of CoCrNiSi_(0.3)C_(0.048) medium entropy alloy with three-stage precipitated phase structure under dynamic compression was constructed.Under the loading condition of 3000 s^(-1) strain rate,the effects of different initial textures such as random,Gaussian,rotating Gaussian,cubic,copper,and brass on the stress-strain response were studied.The results show that the random texture and copper texture exhibit higher yield strength and excellent plastic deformation ability under dynamic compression,while the comprehensive performance of the cube texture is relatively poor.At high strain rate,the precipitated phase significantly affects the strengthening effect of the material.Through the comprehensive analysis of yield strength,plastic deformation ability and hardening behavior,the influence of different initial textures on deformation at high strain rate is revealed,which provides a scientific basis for the optimization design and practical application of high entropy alloys containing precipitated phases.
作者
张雯雯
赵聃
赵伟涛
王强
王建军
马胜国
张团卫
王志华
ZHANG Wenwen;ZHAO Dan;ZHAO Weitao;WANG Qiang;WANG Jianjun;MA Shengguo;ZHANG Tuanwei;WANG Zhihua(School of Aeronautics and Astronautics,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;Shanxi Provincial Key Laboratory of Material Strength and Structural Impact,Taiyuan 030024,Shanxi,China;Shanxi Institute of Metrology Inspection and Testing Center,Taiyuan 030000,Shanxi,China)
出处
《兵工学报》
北大核心
2025年第10期232-242,共11页
Acta Armamentarii
基金
国家杰出青年科学基金项目(12225207)
国家自然科学基金项目(12072220、12102291)
山西省自然科学基金项目(202103021224042、20210302124386)
山西省科技创新人才领军团队项目(202204051002006)。
关键词
晶体塑性有限元模型
高熵合金
析出相
织构
动态压缩
crystal plastic finite element model
high entropy alloy
precipitation phase
texture
dynamic compression
作者简介
通信作者:赵聃,邮箱:zhaodan@tyut.edu.cn。
