实验科学与技术2026，Vol.24Issue(3)：27-33,7.DOI:10.12179/1672-4550.20240598
基于X射线衍射的残余应力测量多参数协同作用机制研究
Study on Multi-Parameter Synergistic Mechanism of Residual Stress Measurement Based on X-ray Diffraction
摘要
Abstract
X-ray diffraction(XRD)stress measurement has attracted significant attention because of its non-destructive nature,high accuracy,and broad applicability.However,the optimization and matching mechanisms of its measurement parameters have long lacked systematic investigation.By constructing a multi-parameter coupling analysis strategy,this study systematically reveals for the first time the synergistic effects of key parameters such as diffraction peak position,scanning step size,and number of sin2ψ measurement points on residual stress measurement accuracy.The experimental results show that the selection of the diffraction peak position exhibits a significant angle effect.When the high-angle diffraction peak at 137.282° is used,the stress calculation error is reduced by about 87.64%compared with the conventional angle,which is due to the higher sensitivity of the high-angle 2θ region to changes in interplanar spacing.The optimization of scanning step size is characterized by two-factor constraints.Although the optimal peak fitting goodness(R2>0.927 84)can be obtained with a step size of 0.03°,a balance between measurement efficiency and noise interference must be considered.An innovative minimum data point criterion strategy for the sin2ψ method is established.When the number of sin2ψ measurement points reaches 7,the stress error can be stably controlled within±5.7 MPa,providing a theoretical basis for rapid detection.This study breaks through the traditional single-parameter optimization model and proposes a multi-parameter synergistic optimization strategy,offering important theoretical support and a technical paradigm for the X-ray diffraction residual stress measurement.关键词
残余应力/X射线衍射/测试/实验技术Key words
residual stress/X-ray diffraction/measurement/experimental technology分类
矿业与冶金引用本文复制引用
谢瑞士,李园利,马拥军..基于X射线衍射的残余应力测量多参数协同作用机制研究[J].实验科学与技术,2026,24(3):27-33,7.基金项目
西南科技大学实验技术研究项目(21syjs-05). （21syjs-05）
