Study on Dynamic Mechanical Behavior of Al-Mg-Si Alloy

作     者：陶小旺 LIU Jibo LIU Xianbin CHEN Jianbin WANG Yonggang 汪小锋 TAO Xiaowang;LIU Jibo;LIU Xianbin;CHEN Jianbin;WANG Yonggang;WANG Xiaofeng

作者机构：Key Laboratory of Impact and Safety EngineeringMinistry of EducationNingbo UniversityNingbo 315211China Ningbo Zhanci New Material Co.Ltd.Ningbo 315338China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2024年第39卷第2期

页      面：454-462页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Funded by the National Key Laboratory of Shock Wave and Detonation Physics(No.JCKYS2023212005) the National Science Foundation of China(Nos.11972202 and 52005271) the State Key Laboratory for Advanced Metals and Materials(No.2023-Z04) the Major Project of Ningbo Science and Technology Innovation 2025(Nos.2021Z099 and 2023Z005) the K C Wong Magna Fund from Ningbo University 

主　　题：Al-Mg-Si alloy strain rate mechanical property microstructure Johnson-Cook model finite element simulation 

摘      要：The dynamic mechanical behavior of Al-Mg-Si alloy was investigated under different strain rates by mechanical property and microstructure characterization,constitutive behavior analysis and numerical simulation in the present *** the strain rate increases,the yield strength,ultimate tensile strength and elongation increase first,then remain almost constant,and finally *** alloy always exhibits a typical ductile fracture mode,not depending on the strain ***,as the strain rate increases,the number of dimples gradually *** deformation can refine grains,however,the grain structure is slightly affected by the strain *** optimized Johnson-Cook constitutive equation was used to describe the mechanical behavior and obtained by fitting the true stress-strain *** parameter C was described by a function related to the strain *** fitting true stress-strain curves by the JC model agree very well with the experimental true stress-strain *** true stress-strain curves calculated by the finite element numerical simulation agree well with the experimental true stress-strain curves.