摘要
制备了一种Cr-Co-Ni-Mn含钴奥氏体不锈钢。与304不锈钢比较,研究了其抗空蚀性能,用TEM观察了空蚀试样的组织结构,并测定了该钢种的强度,利用时效处理研究其组织稳定性。结果表明Cr-Co-Ni-Mn含钴奥氏体不锈钢屈服强度、抗拉强度比常用的304不锈钢高,奥氏体组织稳定,空蚀孕育期长,耐空蚀效果好。TEM观察到试样空蚀作用层有ε马氏体组织,这些形变组织有利于吸收应变能,提高材料耐空蚀能力。综合该钢的性能,在耐空蚀领域有潜在的应用前景。
An Cr-Co-Ni-Mn austenitic stainless steel was self-produced. The properties of its cavitation erosion in comparison with 304 stainless steel was studied. Microstructure of Cr-Co-Ni-Mn austenitic stainless steel wasobserved by TEM after cavitation erosion. The strength of this material was measured, the structural stability after aging was analyzied. The results reveal that Cr-Co-Ni-Mn austenitic stainless steel has higher strength,and longer incubation time than 304 austenitic stainless steel during cavitation erosion. The austenitic microstructure of this material is more stable. The strain ε-martensite were produced during cavitation erosion, andthe structures transformation absorbs shock energy. These exhibt improved cavitation erosion resistance, it can be used in the cavitation field.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2012年第5期673-676,共4页
Journal of Functional Materials
基金
江苏省高校自然科学计划资助项目(04KJB430025)
江苏大学高级专业人才科研启动资助项目(11JDG140)
关键词
Cr-Co-Ni-Mn奥氏体不锈钢
组织稳定性
空蚀
Ε马氏体相变
Cr-Co-Ni-Mn austenitic stainless steel
structural stability
cavitation erosion
E-martensite phase transformation
