OALib Journal期刊
Ni9钢中的回转奥氏体与低温韧性
, PP. 405-490
Abstract:
本文研究了经普通热处理与α+γ相区热处理后,Ni9钢组织与-196℃冲击韧性的关系。回转奥氏体的存在提高了低温韧性。经α+γ相区热处理后,回转奥氏体明显增多,且可在马氏体板条间均匀析出。其分布的均匀程度、弥散程度都比普通热处理者为优。回转奥氏体的形态大致有两类在马氏体板条间析出的为薄片状;在其它界面上析出的为不规则块状。断口观察表明奥氏体确能提高冲击韧性。
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