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kang ru bian ma shi ti gang
Author(s): 
Pages: 42-43
Year: Issue:  2
Journal: Heat Treatment Technology and Equipment

Keyword:  马氏体钢铁素体稳定元素晶粒粗化弥散析出蠕变强度回火过程抗蠕变能力马氏体转变奥氏体钢合金成分;
Abstract: <正> 已研制成新型含铬9.5%的马氏体钢A—21,它主要应用于蠕变强度要求很高的高温环境。为了配制合适的合金成分,奥氏体和铁素体稳定元素应均衡,以制成抗氧化和耐腐蚀的马氏体钢。A—21在以下两方面与其它含铬9%~12%的钢有很大区别:强度是由均匀弥散析出的、能防止晶粒粗化的碳化钛(TiC),而不是由富铬的M23C6型碳化物粒子提供;且TiC粒子于马氏体转变之前在奥氏体中析出,而不是在回火过程中析出。结果这种微观结构提供了比普通马氏体钢
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