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应用定量金相和理论计算发展了分析 Zr-4 合金α-Zr 基体中Fe,Cr 含量的方法。结果表明,只要能精确测量出 Zr-4 合金中第二相所占的体积分数,则计算出的基体中 Fe,Cr 含量就更准确。在分析的三种不同热处理工艺的 Zr-4 样品种中,具有不同的 Zr(Fe,Cr)2 第二相粒子份额以及不同的基体 Fe,Cr 含量,但其第二相大小相近。此外,基体中 Fe,Cr 含量高的试样具有较好的抗疖状腐蚀能力,认为影响 Zr-4 合金腐蚀行为的主要因素是基体中的 Fe,Cr 固溶体含量,而不是第二相粒子大小。
The method of analyzing the contents of Fe and Cr in α-Zr matrix of Zr-4 alloy has been developed by means of quantitative metallography and theoretical calculation. The results show that as long as the volume fraction of the second phase in the Zr-4 alloy can be accurately measured, the calculated contents of Fe and Cr in the matrix are more accurate. The Zr-4 samples with different heat treatment processes have different contents of second phase particles of Zr (Fe, Cr) 2 and different matrix Fe and Cr contents, but the second phase sizes are similar. In addition, the samples with high content of Fe and Cr in the matrix have good anti-corrosive corrosion ability. It is considered that the main factors affecting the corrosion behavior of Zr-4 alloy are the content of Fe and Cr solid solution in the matrix, not the second phase particle size .