新型钴基与<strong>Nb-Si</strong>基高温合金扩散动力学研究进展

新型钴基与Nb-Si基高温合金扩散动力学研究进展

刘兴军, 魏振帮, 卢勇, 韩佳甲, 施荣沛, 王翠萍

Progress on the Diffusion Kinetics of Novel Co-based and Nb-Si-based Superalloys

LIU Xingjun, WEI Zhenbang, LU Yong, HAN Jiajia, SHI Rongpei, WANG Cuiping

图5 Co、Ti与Ni原子在不同合金中的均方位移(MSD)随时间的变化曲线，以及不同温度下Co-Ti-Ni三元系fcc相中示踪扩散系数的计算结果与分子动力学计算结果的对比图，随成分变化的示踪扩散系数 $D_{N i}^{*}$ ^[85]

Fig.5 Time-dependent mean square displacement (MSD) of Co, Ti, and Ni in alloys with different compositions (a), comparisons of tracer diffusion coefficients calculated using kinetic database and molecular dynamic method (b), and tracer diffusion coefficient $D_{N i}^{*}$ change with composition in the fcc phase of Co-Ti-Ni ternary system at various temperatures (c)^[85]