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金属学报  2012 

FGH4096粉末高温合金的再结晶形核机制

DOI: 10.3724/SP.J.1037.2012.00116, PP. 1005-1010

Keywords: 粉末高温合金,再结晶,形核机制

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Abstract:

利用OM和TEM对FGH4096粉末高温合金的再结晶组织进行了系统的观察和分析,证实有3种再结晶形核机制存在,即原始颗粒边界形核、应变诱导蝶状γ'相形核和孪晶叠加形核.通过研究微观偏析,弯曲褶皱边界的形成和孪晶叠加效应,原子扩散和位错运动建立了形核模型.

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