摘要
研究了牌号为Z3CN20—09M的铸造奥氏体不锈钢在400℃下老化时间为100～3000h时的纳米压入硬度和铁素体含量的变化规律，并用透射电镜和场发射扫描电镜观察了老化后样品的组织结构．实验结果表明，该材料在3000h内的热老化脆化现象是由铁素体相区内发生调幅分解引起的．
Z3CN20-09M cast austenite stainless steel was aged at 400 ℃ for 100 - 3 000 h and the change law of nano indenter hardness and ferrite content was investigated. Its microstructure after being aged was observed by both TEM and SEM. The results showed that the thermal aging embrittlement was induced by spinodal decomposition in ferrite.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2008年第10期1117-1121,共5页
Journal of University of Science and Technology Beijing
基金
国家重点基础研究发展计划资助项目(No.2006CB605005)
关键词
铸造奥氏体不锈钢
压入硬度
铁素体含量
调幅分解
casting austenite stainless steel （CASS）
indenter hardness
ferrite content
spinodal decomposition
