采用X射线衍射技术测定了冷轧Inconel 718合金在810℃时效温度下γ"相和δ相的含量,研究了冷轧变形对γ″相析出和γ″→δ转变的影响.结果表明,在810℃时效,γ″相的析出达到饱和状态此时γ"→δ的转变即将发生;应变可诱发γ″相析出以及γ″→δ转变;δ相的数量与时间的关系符合Avrami方程,随冷轧变形量增加,时间指数减小,δ相析出速率增加;γ"→δ转变的数量与时间的关系也可以用Avrami方程描述.
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