热处理对一种 γʹ 沉淀强化钴基高温合金拉伸性能的影响

张慧芳, 吴浩, 肖传民, 李奇, 谢君, 李金国, 王振江, 于金江

Effect of Heat Treatment on Microstructure and Tensile Properties of a Typical γʹ-strengthened Co-based Superalloy

ZHANG Huifang, WU Hao, XIAO Chuanmin, LI Qi, XIE Jun, LI Jinguo, WANG Zhenjiang, YU Jinjiang

表1 铸态合金中析出相的EPMA结果

Table 1 EPMA analysis of the precipitated phase in as-cast alloy

Phase Co Ni Cr Ti C B Ta W MC Mass fraction% 1.69 0.21 0.12 10.83 9.38 - 75.88 20.24 Atom fraction% 1.82 0.23 0.15 14.39 49.72 - 26.69 7.01 M3B2 Mass fraction% 4.54 3.08 1.54 2.45 - 4.73 44.45 37.22 Atom fraction% 4.88 4.74 2.67 4.62 - 39.54 22.69 18.78