摘要
研究了一种新型高度β合金化的阻燃钛合金 Ti40的微观组织。研究表明 ,Ti40合金为单相β合金。其铸态组织中存在四叉晶界及晶界周围的白色区域 ,不超过 780℃固溶处理 ,使其晶粒粗大、晶界宽化 ,晶界仍由许多小晶粒组成 ;82 0℃固溶发生再结晶 ,110 0℃固溶发生二次再结晶 ,大晶粒中出现亚晶 ;95 0℃锻造 ,10 5 0℃固溶处理后其组织为 Si- O化合物和 Cr- O化合物组成的网状结构。不低于 910℃固溶时效处理 ,大晶粒中出现了许多亚晶 ,使合金的室温拉伸性能得到最佳匹配。
The Alloy Ti40 is a highly stabilized beta titanium alloy with good burn resistance. Its microstructure was examined and analyzed using OM, SEM, XRD and EDX. The results reveal that Ti40 is a single β phase alloy. The as cast structure exhibits quadpoint boundaries and white zones around the grain boundaries. The recrystallization and the second recrystallization temperatures are 820℃ and 1 100℃ respectively. After solution treatment at temperatures greater than 910℃ and aging at 600℃. As a result, the alloy exhibits good comprehensive mechanical properties.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2000年第6期403-407,共5页
Rare Metal Materials and Engineering
基金
国家"九五"攻关项目!(计国防 95 - YS- 0 17)
