拉伸轴偏离角度对镍基模型单晶高温合金室温拉伸性能的误差影响分析  

Analysis of the influence of the deviation angle of the tensile axis on the room temperature tensile properties of the nickel-based model single crystal superalloy

作　　者：史超超 张晓娜[1] 王崇愚[2,3] 于涛[3] 张跃飞[1] 李晖[1] 张泽[4] SHI Chao-chao;ZHANG Xiao-na;WANG Chong-yu;YU Tao;ZHANG Yue-fei;LI Hui;ZHANG Ze(l.Institute of Microstructure and Property of Advanced Materials,Beijing University of Technology,Beijing 100124;Department of Physics,Tsinghua University,Beijing 100084;Central Iron&Steel Research Institute,Beijing 100081;Center of Electron Microscopy and State Key Laboratory of Silicon Materials,Department of Materials Science and Engineering,Zhejiang University,Hangzhou Zhejiang 3l0027,China)

机构地区：[1]北京工业大学固体微结构与性能研究所,北京100124 [2]清华大学物理系,北京100084 [3]北京钢铁研究总院,北京100081 [4]浙江大学电子显微镜中心,材料科学与工程学院,硅材料国家重点实验室,浙江杭州310027

出　　处：《电子显微学报》2021年第5期505-509,共5页Journal of Chinese Electron Microscopy Society

基　　金：国家自然科学基金资助项目(No.11874077)。

摘　　要：本文选用镍基模型单晶高温合金Ni-Al-Ru作为研究对象,综合利用SEM原位拉伸技术和EBSD技术,对样品拉伸轴偏离角度可能造成的室温拉伸性能的误差影响进行了分析。作者将实验上获得的屈服强度和抗拉强度归一化到[010]方向上,所得数据和原始数据相差较大,表明拉伸轴偏离[010]方向的角度是合金拉伸性能误差的重要来源。为了使误差<10%,需要将拉伸轴的偏离角度控制在8.8°以内。并且有必要进一步去寻找其它误差来源。Nickel-based model single crystal superalloy Ni-Al-Ru was selected as the research object,and the influence of the error of tensile properties at room temperature caused by the deviation angle of the tensile axis was analyzed by using the in-situ tensile technique in SEM and EBSD technique.The yield strength and tensile strength obtained experimentally are normalized to the direction[010],and there is a large difference between the obtained data and the original data,indicating that the deviation angle of the tensile axis from the direction[010]is an important source of the error of the tensile properties of the alloy.In order to make the error less than 10%,the deviation angle of the tensile axis needs to be controlled within 8.8°.And it is necessary to look for other sources of error.

关 键 词：镍基模型单晶高温合金 拉伸性能 EBSD 欧拉角 

分 类 号：TG115.52[金属学及工艺—物理冶金] TG115.23[金属学及工艺—金属学]