Non-destructive Measurement of Residual Stress Depth Profile in Laser-peened Steel at SPring-8
Non-destructive Measurement of Residual Stress Depth Profile in Laser-peened Steel at SPring-8
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SPring-8 激光喷丸钢残余应力深度轮廓的无损测量
DOI：
10.1063/1.2436367
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发表时间：
2007
影响因子：
0.5
通讯作者：
K. Akita
中科院分区：
文献类型：
--
作者：
Masugu Sato;Y. Sano;K. Kajiwara;Hirotomo Tanaka;K. Akita
我们使用X射线衍射在SPring-8上研究了未经涂层激光喷丸处理的钢表面附近的残余应力深度分布。这项调查是使用恒定的穿透深度sin 2 π方法进行的。在该方法中，通过同时控制四圆测角仪的ω轴和χ轴的夹角和X射线穿透深度来测量sin 2 θ图。该方法可以精确、无损地评估具有应力梯度的材料中的残余应力及其深度分布。因此，我们证实，压缩残余应力成功地形成了整个范围内的深度分布在钢适当的激光喷丸处理没有涂层。
We investigated the residual stress depth profile near the surface of steel treated by laser peening without coating using X‐ray diffraction at SPring‐8. This investigation was carried out using a constant penetration depth sin2ψ method. In this method, the sin2ψ diagram is measured controlling both the ψ angle and the X‐ray penetration depth simultaneously with a combination of the ω and χ axes of the 4‐circle goniometer. This method makes it possible to evaluate the residual stress and its depth profile in material with a stress gradient precisely and non‐destructively. As a result, we confirmed that a compressive residual stress was successfully formed all over the range of the depth profile in the steel treated properly by laser peening without coating.