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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

史超超，张晓娜*，王崇愚，于 涛，张跃飞，李 晖，张 泽
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2021年 第40卷 第5期: 1000-6281（2021）05-505-05     下载地址：

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

史超超，张晓娜*，王崇愚，于  涛，张跃飞，李  晖，张  泽

( 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)

摘  要  本文选用镍基模型单晶高温合金NiAlRu作为研究对象，综合利用SEM原位拉伸技术和EBSD技术，重点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。实验结果表明把实验上获得的屈服强度和抗拉强度归一化到[010]方向上，和原始数据相比，有较大误差，拉伸轴偏离角度是合金拉伸性能误差的重要来源。为了使误差＜10%，要将拉伸轴的偏离角度控制在8°以内。有必要进一步去寻找其它误差来源。

关键词 镍基模型单晶高温合金；拉伸性能；EBSD；欧拉角

中图分类号：TB333；TG115.21 +5.3 

文献标识码：Adoi:10.3969/j.issn.1000-6281.2021.05.003

 

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

SHI Chao-chao1，ZHANG Xiao-na1*，WANG Chong-yu2，3，YU Tao3，

ZAHANG Yue Fei1，LI Hui1，ZHANG Ze4

( 1．Institute of Microstructure and Property of Advanced Materials，Beijing University of Technology，Beijing 100124；2．Department of Physics，Tsinghua University，Beijing 100084；3．Central Iron ＆Steel Research Institute，Beijing 100081；4．State Key Laboratory of Silicon Materials，School of Materials Science and Engineering，Zhejiang University，Hangzhou Zhejiang 310027，China)

Abstract  In this paper, nickel-based model single crystal superalloy NiAlRu is selected as the research object, combined with SEM in-situ tensile technology and EBSD technology, focusing on the analysis of error influence of the tensile properties at room temperature caused by the deviation angle of the tensile axis of the sample. The experimental results show that the yield strength and tensile strength obtained in the experiment are normalized to the [010] direction. Compared with the original data, the deviation angle of the tensile axis is an important source of errors in the tensile properties of the alloy. In order to make the error less than 10%, the deviation angle of the tensile axis should be controlled below 8°. It is necessary to go further to find other error sources.

Keywords  nickel-based model single crystal superalloy;tensile properties;EBSD;Euler angle

 

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