Study on the influence of surface roughness on tensile and low-cycle fatigue behavior of electron beam melted Ti‐6Al‐4V

IF 0.7 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING

International Journal of Materials Research Pub Date : 2023-10-01 DOI:10.1515/ijmr-2022-0131

Dongye Yang, Ke Si, Wenqi Tian, Xinqi Zhang

引用次数: 0

Abstract

Abstract Surface quality is a key factor in determining the mechanical performance of metallic materials. In this study, the influence of surface roughness on quasi-static mode tensile and low fatigue behavior of electron beam melted (EBMed) Ti‐6Al‐4V was studied. The results showed that the microstructure of the EBMed Ti‐6Al‐4V is mainly composed of α and β phases. It was found that the yield strength of the as-polished EBMed sample was about 200 MPa higher than the original EBMed sample, and the fatigue life was three times that. The fatigue crack initiation and propagation were explored, and it was found that the fatigue life was reduced on account of the thermal stress concentration that was generated as a result of the solidification shrinkage and the local stress concentration.

查看原文本刊更多论文

表面粗糙度对电子束熔化Ti - 6Al - 4V拉伸和低周疲劳性能影响的研究

摘要表面质量是决定金属材料力学性能的关键因素。本文研究了表面粗糙度对电子束熔化(EBMed) Ti - 6Al - 4V准静态模式拉伸和低疲劳行为的影响。结果表明:EBMed Ti - 6Al - 4V的微观结构主要由α相和β相组成;结果表明，抛光后的EBMed试样的屈服强度比原EBMed试样提高了约200 MPa，疲劳寿命是原EBMed试样的3倍。研究了疲劳裂纹的萌生和扩展过程，发现由于凝固收缩和局部应力集中而产生的热应力集中降低了疲劳寿命。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Materials Research 工程技术-冶金工程

CiteScore

1.30

自引率

12.50%

发文量

119

审稿时长

6.4 months

期刊介绍： The International Journal of Materials Research (IJMR) publishes original high quality experimental and theoretical papers and reviews on basic and applied research in the field of materials science and engineering, with focus on synthesis, processing, constitution, and properties of all classes of materials. Particular emphasis is placed on microstructural design, phase relations, computational thermodynamics, and kinetics at the nano to macro scale. Contributions may also focus on progress in advanced characterization techniques. All articles are subject to thorough, independent peer review.