Probing single crystal orientation by X-ray diffraction for nickel-based superalloys
Probing single crystal orientation by X-ray diffraction for nickel-based superalloys
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DOI：
10.1016/j.rinp.2021.104769
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发表时间：
2021-10
影响因子：
5.3
通讯作者：
Yumin Wang;Zhong-li Liu;L. Qiao;Shuangming Li
中科院分区：
文献类型：
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作者：
Yumin Wang;Zhong-li Liu;L. Qiao;Shuangming Li
采用旋转取向X射线衍射仪(RO-X射线衍射仪)和背反射劳厄X射线衍射仪(BRL-X射线衍射仪)研究了镍基单晶高温合金的偏转角。RO-X射线衍射法和BRL-X射线衍射法之间的显著一致性提供了强有力的证据，证明了切割方向对偏转角的显著影响。在不考虑偏角的情况下，提出了一次取向角来表征镍基单晶高温合金的固有取向变化，消除了切割方向的影响。此外，在镍基单晶高温合金中可以出现两对RO-X射线衍射峰，尽管通常认为这些峰是在双晶中出现的。
The deviation angles of Ni-based single crystal superalloys are investigated by two techniques of rotating orientation X-ray diffraction (RO-XRD) and back-reflection Laue X-ray diffraction (BRL-XRD). The remarkable agreement between the RO-XRD and BRL-XRD methods provides strong evidence that the cutting direction has a significant effect on the deviation angle. Regardless of the deviation angle, the primary orientation angle is presented to characterize the inherent orientation changes in Ni-based single crystal superalloy, and it eliminates the effects of cutting direction. Furthermore, two pairs of diffraction peaks of the RO-XRD pattern could be developed in Ni-based single crystal superalloy, although these peaks are generally considered to take place in a bicrystal.