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7. GH350合金应力松弛实验后TEM明场像
Fig.7. TEM bright field images of GH350 alloy after stress relaxation tests at 600 ℃, 510 MPa (a, b) and 700 ℃, 510 MPa (c, d)(a) strain contrast field around γ' particles (b) dislocation pile-up around grain boundary η phase(c) interface dislocation of intragranular η phase (d) deformation band in matrix
