<strong>K439B</strong>铸造高温合金<strong>800</strong>℃长期时效组织与性能演变

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 800^oC

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

图8 K439B合金800℃长期时效不同时间后的力学性能

Fig.8 Room temperature tensile properties (a) and 815^oC, 379 MPa stress rupture properties (b) of K439B alloy subjected to long-term aging at 800^oC (σ_b—tensile strength, σ_p0.2—yield strength, δ—elongation, τ^{—stress rupture life )}