Cu对Inconel 718合金Nb偏析影响机理的第一性原理研究

李亚敏, 张瑶瑶, 赵旺, 周生睿, 刘洪军

First-Principles Study on the Effect of Cu on Nb Segregation in Inconel 718 Alloy

LI Yamin, ZHANG Yaoyao, ZHAO Wang, ZHOU Shengrui, LIU Hongjun

表6 铸态Inconel 718合金不同区域EDS分析结果 (mass fraction / %)

Table 6 EDS results of different regions of as-cast Inconel 718 alloy

Alloy Area Ni Nb Al Ti Cr Fe Mo Cu No.0 Matrix 51.74 3.76 0.39 0.72 20.68 19.93 2.78 - Segregation zone 51.90 7.59 0.26 1.31 18.56 17.35 3.03 - Laves phase 46.46 15.53 - 1.23 16.94 15.66 4.18 - No.1 Matrix 48.79 1.94 0.42 0.29 21.25 24.22 3.02 0.08 Segregation zone 45.52 4.69 0.46 0.29 20.92 22.09 3.84 0.18 Laves phase 37.15 23.04 0.15 0.31 14.29 14.78 10.0 0.29