铸造技术2025，Vol.46Issue(4)：391-396,6.DOI:10.16410/j.issn1000-8365.2025.4255
含Fe钛合金的偏析现象及预防措施
Segregation Phenomenon and Preventive Measures of Titanium Alloys Containing Fe
摘要
Abstract
The abnormal macrostructure of titanium forgings containing Fe is common in production.The abnormal macrostructures of the multicomponent titanium alloys TB6 and TC18 were studied via optical microscope(OM),energy spectrum analysis(EDS),ICP spectral analysis,etc.The results reveals that the bright spots in the region from the 1/2 radius to the center of the TB6 alloy bar,and the dark spots in the central area of the head of the TC18 alloy bar are both Fe enrichment segregations formed during the ingot melting process.Further analysis reveals that Fe segregation is caused by the solute partition coefficient k0＜1.The Fe segregation in the production process of the ingot can be effectively prevented by adopting a lower melting current,shortening the feeding time,and controlling the arc-stabilizing current.关键词
钛合金/低倍组织异常/偏析/熔炼Key words
titanium alloy/abnormal macrostructure/segregation/smelting分类
金属材料引用本文复制引用
刘志成,张利军,刘娣,米磊,韩彤,侯林涛..含Fe钛合金的偏析现象及预防措施[J].铸造技术,2025,46(4):391-396,6.基金项目
陕西省秦创原"科学家+工程师"队伍建设项目(2023KXJ-252) （2023KXJ-252）
