Ni基单晶高温合金取向测定方法的研究  

A Study of Determination of Orientation of Ni-based Single Crystal Superalloy

作　　者：方建锋[1] 田志凌[2] 燕平[3] 张晋远[1] 郑毅[1] 

机构地区：[1]钢铁研究总院粉末冶金研究室,北京100081 [2]钢铁研究总院结构材料研究所,北京100081 [3]钢铁研究总院高温材料研究所,北京100081

出　　处：《材料工程》2008年第3期49-53,共5页Journal of Materials Engineering

摘　　要：论述了在普通的多晶衍射仪上,利用固定2θ角,进行Omega扫描的非对称X射线衍射方法来测定Ni基单晶高温合金[001]取向的原理,对三个具有不同取向角度的Ni基单晶高温合金进行了取向测定,讨论了该方法可测试的单晶体偏差角的范围和进一步扩大测试范围的可能解决方法,以及测试中应注意的问题。利用带有偏差角的非对称扫描方法得到了单晶的(002)晶面的衍射线,讨论了得到该衍射线的意义。A principle for determining the orientation of [001] crystal direction of Ni-based single crystal superalloy has been explained by asymmetrical X-ray diffraction technique in common diffractome- ters. It is based on Omega （which is the angle between the incidence X-ray beam and the Surface of the sample tested） scanning while the 20 angle keeps constant. Three [001]-oriented Ni-base superalloys which have different orientation angles have been tested by the method developed in this work. The range of orientation angle in Ni-based single crystal which can be tested by this method and the possible way to extend the range are discussed. The diffraction line of （002） crystal plane of Ni-based single crystal has been attained by asymmetrical diffraction technique with certain offset angle. The significance to attain the diffraction line is evaluated.

关 键 词：Ni基单晶 取向测定 非对称X射线衍射 

分 类 号：TG115.222[金属学及工艺—物理冶金]