理化检验-物理分册2023，Vol.59Issue(12)：6-11,6.DOI:10.11973/lhjy-wl202312002
不同表面状态对Ti80合金动态与静态力学性能的影响
The effect of different surface states on the dynamic and static mechanical properties of Ti80 alloy
高琛 1赵如涛 1徐魁龙 1王磊1
作者信息
- 1. 中国船舶集团有限公司第七二五研究所, 洛阳 471000
- 折叠
摘要
Abstract
The tensile,impact and fatigue tests of Ti80 alloy samples with different surface states were carried out.Combined with the analysis results of digital image correlation method and scanning electron microscope,the mechanical behavior of Ti80 alloy under dynamic and static loading was studied.The results show that the tensile strength of Ti80 alloy surface polished and deep notch samples was larger than that of surface polished samples.The tensile strength of prefabricated crack samples decreased obviously,and the elongation after fracture decreased with the decrease of surface quality and the increase of notch depth.The impact absorbed energy of samples with different surface states decreased significantly with the decrease of surface quality and the increase of notch depth.The fatigue performance of Ti80 alloy was very sensitive to the surface state of the sample.The surface grinding scratches and small notches would significantly reduce the fatigue life of the material.The mechanical properties of samples with different surface states were more sensitive to the dynamic loading process.关键词
Ti80合金/缺口/拉伸/冲击/疲劳Key words
Ti80 alloy/notch/stretching/impact/fatigue分类
矿业与冶金引用本文复制引用
高琛,赵如涛,徐魁龙,王磊..不同表面状态对Ti80合金动态与静态力学性能的影响[J].理化检验-物理分册,2023,59(12):6-11,6.
