服役条件下镍基高温合金应力松弛微观机制
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Stress Relaxation Mechanism for Typical Nickel-Based Superalloys Under Service Condition
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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 |
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