服役条件下镍基高温合金应力松弛微观机制
江河(
),董建新,张麦仓,姚志浩,杨静
),董建新,张麦仓,姚志浩,杨静
Stress Relaxation Mechanism for Typical Nickel-Based Superalloys Under Service Condition
JIANG He(),DONG Jianxin,ZHANG Maicang,YAO Zhihao,YANG Jing
),DONG Jianxin,ZHANG Maicang,YAO Zhihao,YANG Jing
图9. GH4169合金在650 ℃、1020 MPa条件下未达到稳态的应力松弛曲线及典型显微组织的TEM明场像
Fig.9. Stress relaxation curve (a) and typical TEM bright field images showing a large amount of twins (b), grain boundary migration (c) and defects in δ phase (d) after stress relaxation test at 650 ℃, 1020 MPa
