理化检验-物理分册2025，Vol.61Issue(10)：13-17,5.DOI:10.11973/lhjy-wl250139
TA31合金冷轧管件断后伸长率偏低原因
Reasons for the low elongation after fracture of TA31 alloy cold-rolled pipe fittings
刘晓勇 1赵有鹏 1李雪峰 1徐宁 1陈洁明 1郭海霞1
作者信息
- 1. 洛阳船舶材料研究所海洋腐蚀与防护全国重点实验室,洛阳 471023
- 折叠
摘要
Abstract
The TA31 alloy cold-rolled pipe fittings used in a certain petrochemical equipment exhibit abnormally low elongation after fracture.The reasons for the low elongation after fracture of the pipe fittings were analyzed using macroscopic observation,chemical composition analysis,mechanical property testing,scanning electron microscopy and energy spectrum analysis,metallographic examination.The results show that there were α layers and folding defects on the inner surface of the pipe fittings,which led to stress concentration and crack initiation on the surface of the specimen during the tensile test,changed the stress state of the specimen and ultimately resulted in a decrease in the elongation after fracture of the pipe fittings.关键词
钛合金/冷轧成型/α层/断后伸长率/折叠缺陷Key words
titanium alloy/cold-rolling forming/α layer/elongation after fracture/folding defect分类
通用工业技术引用本文复制引用
刘晓勇,赵有鹏,李雪峰,徐宁,陈洁明,郭海霞..TA31合金冷轧管件断后伸长率偏低原因[J].理化检验-物理分册,2025,61(10):13-17,5.
