Improvements in Energy Dispersive Diffraction in Respect of Residual Stress Analysis
Improvements in Energy Dispersive Diffraction in Respect of Residual Stress Analysis
复制标题
能量色散衍射在残余应力分析方面的改进
DOI：
10.4028/www.scientific.net/msf.571-572.189
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
C. Genzel
中科院分区：
文献类型：
--
作者：
Ingwer A. Denks;C. Genzel
在使用能量色散 (ED) 衍射的残余应力分析 (RSA) 中，必须注意探测器的能量稳定性。对于给定的探测器系统，已证明能量位置随死区时间显着降低。在反射和扫描实验中校正 RSA 数据可以显着提高 RSA 在不同条件下的可靠性。由于 ED 实验中的衍射角较小，因此研究了反射几何形状中调整误差的影响，揭示了宽入射光束与二次光束高准直相结合的需要。所用吸收体材料的差异体现在样品加热和由于漫散射而导致的光束展宽方面。
In residual stress analysis (RSA) using energy dispersive (ED) diffraction care has to be taken of the detector energy stability. For a given detector system it is demonstrated that the energy position decreases significantly with dead time. Correction of the RSA data both in reflection and scanning experiments allows a significant improvement in the reliability of RSA under different conditions. Owing the small diffraction angles in ED experiments, the effect of adjustment errors in reflection geometry is investigated revealing the need of a wide incoming beam combined with high collimation of the secondary beam. The differences in the used absorber materials are shown in respect of sample heating and beam widening due to diffuse scattering.