宁夏大学学报（自然科学版）2024，Vol.45Issue(1)：31-35,5.
残余应力、晶粒尺寸对铍纳米压入行为影响的数值分析
Numerical Analysis of the Influence of Residual Stress and Grain Size on the Indentation Behavior of Beryllium
摘要
Abstract
Information on the micromechanical behavior(properties)of beryllium metal surfaces at the grain scale were obtained by using nanoidentation and electron backscattered diffraction(EBSD)techniques,and finite element simulations of the nanoindentation process were conducted using ABAQUS software.As the numerical simulation results were consistent with the measured data,fundamental mechanical property parameters of the simulation process could be obtained.Based on these parameters,a numerical analysis was performed to investigate the effects of residual stress and grain size on the nanoindentation behavior of beryllium.The results indicated a clear linear relationship between residual stress,crystal size,and the plastic work of nanoindentation,maximum depth,and residual depth.When considering plastic work for comparison,the influence coefficient of residual stress was found to be 0.852 5×10-12 J/MPa,and the influence coefficient of grain size was 95.373×10-12 J/μm.This study provides valuable insights for the understanding of mechanical properties in nanoindentation and for estimating residual stress within grains.关键词
金属铍/纳米压痕/有限元方法/残余应力/晶粒尺寸Key words
metal beryllium/nanoindentation/finite element method/residual stress/grain size分类
矿业与冶金引用本文复制引用
洪欣欣,何力军,代彦明,张健康,刘婷,郭耀军,宋明泽..残余应力、晶粒尺寸对铍纳米压入行为影响的数值分析[J].宁夏大学学报（自然科学版）,2024,45(1):31-35,5.基金项目
宁夏自然科学基金资助项目(2022AAC03069) （2022AAC03069）
西北稀有金属材料研究院宁夏有限公司稀有金属特种材料国家重点实验室开放课题基金资助项目(SKL2023K002) （SKL2023K002）
