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GH720Li合金的铸态组织和均匀化工艺

DU Jin-hui,QU Jing-long,DENG Qun,ZHUANG Jing-yun,LIU Qing-bin,LU Cui-fen,CHEN Guo-sheng

JOURNAL OF IRON AND STEEL RESEARCH（2005）

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Abstract
对GH720Li合金的铸态组织及均匀化工艺进行了研究,采用物理化学相分析的方法确定了该合金析出相的类型、数量和γ′相的粒径分布.结果表明:该合金在铸造状态下的析出相是γ′、Ti(C,N)、TiC和M3B2(痕),其中γ′相的质量分数高达34.187%.均匀化的结果表明:GH720Li合金适宜的均匀化温度为1 190 ℃.
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Key words
homogenization process,microstructure,as-cast
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