通过形变加工和长期时效热处理,研究了(C+N)复合强化的Fe-13Cr-17Mn(W,V)奥氏体合金的稳定性和相平衡特点.结果表明:在500℃以下合金奥氏体稳定,不发生γ→α转变.采用(C+N)复合添加晶粒细化,可有效抑制ε马氏体形成和σ相析出.500～700℃长期时效后形变诱发大量碳化物析出,MS点提高,加快形变诱发α'马氏体分解和再结晶,促使γ→α转变和σ相析出,合金奥氏体变得不稳定.
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