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金属学报  2001 

α-Cr相在IN718合金中的析出及其热力学计算

, PP. 1174-1178

Keywords: IN718,α-Cr相,热力学计算

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Abstract:

通过热力学计算,建立了Cr,Mo及Nb与IN718合金的赝二元相图以及Cr-Fe-IN718赝三元等温截面图.研究了IN718合金中α-Cr相析出条件和化学成分对α-Cr相析出温度及析出量的影响.确定了α-Cr相析出的临界成分和不同成分条件下α-Cr相开始析出温度及析出量,同时得出了Cr,Mo和Nb含量与α-Cr相开始析出温度和析出量的关系式.利用X射线衍射对萃取相的分析及选择性浸蚀方法,验证并显示了α-Cr相在IN718合金中的存在和分布

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