高强马氏体钢长期时效过程中的微偏聚现象  

THE MICRO-ENRICHED ZONES PHENOMENA OF THE HIGH-STRENGH MARAGING STEEL IN LONG-TERM AGING

作　　者：龚润生[1] 尹志民[1] 

机构地区：[1]中南工业大学材料科学与工程系

出　　处：《中南工业大学学报》1995年第2期206-209,共4页Journal of Central South University of Technology(Natural Science)

摘　　要：１４％Ｃｒ－５％Ｎｉ（质量分数）马氏体钢热处理后在４００℃长期时效，强度增加，韧性降低，合金脆化。经分析表明，合金脆化与有害元素Ｐ和合金元素Ｃｒ，Ｎｉ等在原始奥氏体晶界上的微偏聚过程有关。After long-term aging,the 14%Cr-5%Ni maraging steel is heat-treated,and itsstrength increases;the impact toughness is lowered,and the alloy becomes brittle.The re-sults show that the alloy embrittlment is related to the formation of the micro-enriched zonesof the alloy elements Ni,Cr etc.and harmful elements,such as P,at the original Austenitegrain boundary.

关 键 词：合金 脆化 微偏聚 时效 马氏体钢 高强度钢 

分 类 号：TG142.24[一般工业技术—材料科学与工程]