Evaluation of Residual Stress Distribution in Shot-Peened Steel by Synchrotron Radiation
Evaluation of Residual Stress Distribution in Shot-Peened Steel by Synchrotron Radiation
复制标题
同步辐射评估喷丸钢的残余应力分布
DOI：
10.2472/jsms.52.764
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
K. Arai
中科院分区：
文献类型：
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作者：
Y. Akiniwa;Keisuke Tanaka;Kenji Suzuki;E. Yanase;K. Nishio;Y. Kusumi;H. Okado;K. Arai
利用同步辐射源的高能X射线测量了喷丸钢中残余应力的深度分布。用侧倾法（X射线衍射仪）测定了2θ与sin ~ 2 θ的关系。首先用单纯形法由正弦图的非线性来估计残余应力的分布。估算的应力与用Cr-K α辐射结合常规表面去除法的sin 2 σ法测定的应力分布一致。提出了一种新的残余应力估算方法.新方法是将侧倾角法和等倾角法（ω衍射仪）相结合，以保持穿透深度恒定。正弦2 π图可以近似为线性关系。所评估的应力分布与通过表面去除法获得的分布一致。
The in-depth distribution of residual stresses in shot-peened steels was measured by using high energy X-rays from a synchrotron radiation source. The relation between the 2θ and sin2ψ was obtained with the side-inclination method (ψ diffractometer). The distribution of residual stresses was first evaluated by the nonlinearity of the sin2ψ diagram by a simplex method. The estimated stress agreed with the distribution determined through the sin2ψ method by using Cr-Kα radiation combined with the conventional surface removal method. A new method was proposed to estimate the stress value of the distributed residual stress. The new method was a combination of the sideinclination method and the iso-inclination method (ω diffractometer) to maintain the penetration depth constant. The sin2ψ diagram could be approximated by the linear relationship. The evaluated stress distribution agreed well with the distribution obtained by the surface removal method.