脱芯工艺对钴基高温合金DZ40M组织和性能的影响

佟健, 陈甲祺, 郑志, 于永泗, 宁礼奎, 刘恩泽

Effect of Leaching Process for Ceramic Core on Micro-structure and Mechanical Property of Investment Cast Co-base Superalloy DZ40M

TONG Jian, CHEN Jiaqi, ZHENG Zhi, YU Yongsi, NING Likui, LIU Enze

表4 DZ40M合金经铝基脱芯工艺处理不同时间后在980℃/83 MPa条件下的持久性能

Table 4 Rupture properties of DZ40M alloy immersed in Al-based core leaching medium for different time and the test condition is 980℃/83 MPa

Leaching time/h Rupture life/h Reduction of area/% Elongation/% 0 64.55 46.2 83.35 300 1.12 12.94 16.67 600 0.92 9.83 12.33