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3 经600 h铝基脱芯处理试样表面腐蚀产物的EDS分析结果

Table 3 EDS analysis result of surface corrosion products of specimen immersed in Al-based core leaching medium for 600 h (%, atomic fraction)

Element O Al Ti Cr Fe Co Ni W Black corroded product 56.79 1.25 4.29 26.02 2.41 4.24 4.62 -- Dark grey corroded product 61.01 3.87 0.38 27.66 1.75 3.70 1.33 0.28