摘要
对OOCr26Ni8Mo3Ti不锈钢在不同固溶处理状态下的组织结构和力学性能进行了研究。试验结果表明,当固溶温度950～1000℃时,由于组织中有害σ相(TCP)的存在,使其力学性能呈现出典型的σ相脆性特征。而固溶温度为1050℃时,合金的组织为F相(bcc)+A相(fcc),σ相消失,所以合金具有强度高,塑性、韧性好等优良的综合力学性能。当固溶温度分别为1100℃和1150℃时,合金几乎为单相F组织,晶粒粗大(1～2级),从而使合金的塑性和韧性稍有降低。
The microstructures and mechanical properties of OOCr26Ni8Mo3Ti stainless steel after different solution treatment were studied. The result shows that when the solution temperature varies between 950～1000℃, as the harmful Sigma phase appears, the mechanical property of alloy shows a typical Sigma phase embrittlement. While if solution treated at 1050℃, the microstructure is composed of ferritic phase(bcc) and austenitic phase (fcc) and the Sigma phase dissolved, so the alloy has excellent comprehensive mechanical properties. When the temperature is at 1100℃, or 1150℃, the microstructure of the alloy is almost all ferritic phase (bcc), with coarse grain (level 1-2), so to made the plasticity and ductility decline slightly.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
1993年第4期39-43,共5页
Materials Science and Technology
关键词
不锈钢
力学性能
固溶处理
solution temperature
OOCr26Ni8Mo3Ti stainless steel
microstructure
mechanical property
