材料工程2025，Vol.53Issue(10)：90-97,8.DOI:10.11868/j.issn.1001-4381.2024.000057
TC4钛合金铸锭缩孔与富铝缺陷的相关性研究
Study on correlation between shrinkage porosity and Al-rich defects in TC4 titanium alloy
刘鹏 1梁敬凡 1李芹芹 1何涛 1罗文忠1
作者信息
- 1. 西部超导材料科技股份有限公司,西安 710018
- 折叠
摘要
Abstract
The correlation between ingot shrinkage and Al-rich defects is studied by prefabricated shrinkage,forging and stamping deformation.For Al-rich segregation defects in bars,the results show that the dark banding is presented at low magnification via visual observation,and the dense α phase characteristic is shown at high magnification via optical microscope.The content of α phase in the defect area is 88.26%,which is much higher than 47.23%in the normal area.Besides,there is obvious enrichment of aluminum element in the defect area,and the energy spectrum results show that the average content of Al element is as high as 9.58%(mass fraction,the same below),which is significantly higher than 5.86%in the normal area.Moreover,the average microhardness is 401.33HV,which is higher than that of the normal region 304.33HV as well.For the ingot shrinkage,the results show that the enrichment of Al element is the most obvious in the top surface part of the shrinkage cavity.The average content is as high as 9.59%in the top surface of shrinkage cavity,but is only 5.33%in the bottom surface part.The enrichment of Al elements in shrinkage of ingot corresponds to the segregation of Al-rich defects in bars,indicating that the enrichment of Al element in the shrinkage cavity is hereditary.关键词
TC4/钛合金/缩孔/缺陷Key words
TC4/titanium alloy/shrinkage cavity/defect分类
矿业与冶金引用本文复制引用
刘鹏,梁敬凡,李芹芹,何涛,罗文忠..TC4钛合金铸锭缩孔与富铝缺陷的相关性研究[J].材料工程,2025,53(10):90-97,8.
