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通过加热一冷却一组织分析法，研究了含铌基体钢６５Ｃｒ４Ｗ３Ｍｏ２ＶＮｂ（简称６５Ｎｂ）从１５００℃至室温不同温度下，钥所处的相区及不同冷速条件下相组成的变化，初步探讨了６５Ｎｂ钢中的相关系。
By heating and cooling a microstructure analysis, the change of phase composition of the niobium-containing matrix steel 65Cr4W3Mo2VNb (referred to as 65Nb) from 1500 ℃ to room temperature under different cooling rates was studied. The effects of 65Nb Steel in the correlation.