彎曲晶界對GH220合金疲勞性能的影響
Effect of Zig-Zag Grain Boundary on Fatigue Property of Superalloy GH220
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摘要: 二類不同熱處理的GH220合金進行了疲勞試驗。結果表明,等溫處理的合金的疲勞性能高于標準處理的。詳細討論了這一差別的原因。Abstract: Fatigue property of alloy GH220 treated by two kinds of heat treatment have been tested.The results show that the fatigue limit of alloy treated by isothermal teat treatment is higher than that treatde by standard heat treatment. The reason of this difference is discussed in detail.