00Cr21Ni14Mo2Mn5N钢冲击断口分层原因分析  

Analysis of Cause for Layered Fracture Occurring During Impact Test of 00Cr21Ni14Mo2Mn5N Steel

作　　者：冯兆龙[1] 杨澍[1] 

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471039

出　　处：《金属世界》2009年第3期43-45,共3页Metal World

摘　　要：高强奥氏体不锈钢00Cr21Ni14Mo2Mn5N钢冲击试验后出现断口分层现象。利用低倍检测、扫描电镜能谱分析和金相显微镜,对金相以及冲击试样纵剖面、垂直于钢板表面的横切面进行了观察、检测和分析,指出分层现象与板厚中心偏析处的铌化物夹杂、带状组织有关。通过1150℃固溶处理,冲击断口的分层现象基本消失。Layered fracture occurs aider impact test of 00Cr21Ni14Mo2Mn5N steel, which is a kind of high tensile strength austenite stainless steel. The fracture surface and the sections paralleling to tensile direction and perpendicular to plate surface are observed, detected and analyzed by means of macro-detecting, SEM, and metalloscope. The results show that the layered fracture is caused by niobic inclusions and banded structures. By 1150℃ heat treatment, the impact test samples＇ layered fracture disappeared.

关 键 词：分层断口 中心偏析 带状组织 夹杂物 高强奥氏体不锈钢 

分 类 号：TG142.15[一般工业技术—材料科学与工程]