基于纳米压痕的B_(4)C/7075Al复合材料界面本构方程反演分析  

Reverse analysis of constitutive equations for B_(4) C/7075Al composite interface based on nanoindentation

作　　者：薛克敏[1] 王可成 代良伟 田辙环 石文超[1] 李萍[1] XUE Ke-min;WANG Ke-cheng;DAI Liang-wei;TIAN Zhe-huan;SHI Wen-chao;LI Ping(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《塑性工程学报》2025年第4期131-140,共10页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(52375329);安徽省自然科学基金资助项目(2308085ME164)。

摘　　要：为研究热处理后高压扭转B_(4)C/7075Al复合材料界面的介观尺度力学性能,利用纳米压痕实验获取复合材料界面的载荷-位移曲线,提出了一种结合量纲法和有限元反演分析法来确定复合材料界面弹塑性本构关系的逆向分析方法。并基于获得的弹塑性本构关系开展有限元模拟,将模拟结果与实验结果进行对比。结果表明:热处理后高压扭转B_(4)C/7075Al复合材料界面的弹性模量、应变硬化指数和屈服强度分别为117.44 GPa、0.296和978 MPa。模拟得到的弹性模量和纳米硬度与实验值的相对误差分别为5.8%和2.9%,证实了基于纳米压痕反演分析B_(4)C/7075Al复合材料界面本构方程的可行性。In order to study the meso-scale mechanical properties of high pressure torsional B_(4)C/7075Al composite interface after heat treatment,the load-displacement curves of the composite interface were obtained by nanoindentation experiments,and a reverse analysis method combining dimension method and finite element reverse analysis was proposed to determine the elastic-plastic constitutive relationship of the composite interface.Based on the obtained elastic-plastic constitutive relationship,the finite element simulation was carried out,and the simulation results were compared with experimental results.The results show that the elastic modulus,strain hardening index and yield strength of high pressure torsional B_(4)C/7075Al composite interface after heat treatment are 117.44 GPa,0.296 and 978 MPa,respectively.The relative errors of elastic modulus and nanohardness obtained from the simulation compared to experimental values are 5.8%and 2.9%,respectively,which confirm the feasibility of reverse analysis of constitutive equations for B_(4)C/7075Al composite interface based on nanoindentation.

关 键 词：金属基复合材料 高压扭转 纳米压痕 反演分析 

分 类 号：TG146[一般工业技术—材料科学与工程]