球压痕法获取不同变形率下316L不锈钢的力学性能  

Mechanical Properties of 316L Stainless Steel under Different Deformation Rates Obtained by Ball indentation Method

作　　者：薛河[1] 贺晋璇 贾文娜 王正 李富强 XUE He;HE Jinxuan;JIA Wenna;WANG Zheng;LI Fuqiang(School of Mechanical Engineering,Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]西安科技大学机械工程学院,陕西西安710054

出　　处：《热加工工艺》2024年第4期91-95,共5页Hot Working Technology

摘　　要：核电焊接结构由于在加工过程中受到冷作硬化导致局部区域力学性能发生改变且难以准确获取,利用ABAQUS有限元分析软件建立了弹塑性材料下的压痕实验三维模型进行数值模拟,通过识别载荷-深度曲线中的相关参数,结合量纲分析法理论计算316L奥氏体不锈钢材料在不同变形率下的力学性能参量。结果表明,随着变形率的不断增大,材料的塑性降低,硬度增大,且力学性能参数如屈服强度、抗拉强度及硬化指数均相应增大。Due to cold-working hardening in the process of nuclear power welding,the mechanical properties of the local area are changed and it is difficult to obtain accurately.The ABAQUS finite element analysis software was used to establish a three-dimensional model of indentation test under elastoplastic materials for numerical simulation.By identifying the relevant parameters in the load-depth curve and combining with the dimensional analysis,the mechanical properties of 316L austenitic stainless steel materials at different deformation rates were calculated.The results show that the plasticity of the material decreases and the hardness increases,and the mechanical properties such as yield strength,tensile strength,and hardening index,increase with the increasing deformation rates.

关 键 词：球压痕法 奥氏体不锈钢 载荷-深度曲线 力学性能参数 

分 类 号：TG407[金属学及工艺—焊接]