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
图9 K439B合金800℃长期时效不同时间后室温拉伸断口附近位错形貌
Fig.9 Dislocation structures near room temperature tensile fracture surface of K439B alloy subjected to long-term aging at 800oC for 0 h (a, b), 1000 h (c, d), and 3000 h (e, f)