K439B铸造高温合金800℃长期时效组织与性能演变

张雷雷, 陈晶阳, 汤鑫, 肖程波, 张明军, 杨卿

Evolution of Microstructures and Mechanical Properties of K439B Superalloy During Long-Term Aging at 800oC

ZHANG Leilei, CHEN Jingyang, TANG Xin, XIAO Chengbo, ZHANG Mingjun, YANG Qing

表2 K439B合金800℃时效不同时间后枝晶间及晶界区域M23C6碳化物的含量

Table 2 Contents of M23C6 carbide in the interdendritic region and at grain boundary of K439B alloy subjected to long-term aging at 800oC

Aging time Interdendritic region Grain boundary h % % 0 - 20.86 100 - 23.64 500 - 25.98 1000 2.34 29.40 2000 6.58 36.43 3000 10.19 38.93