CYCLIC CREEP STUDY ON AN IRON-BASE SUPERALLOY
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摘要: 對GH132合金的周期蠕變研究指出,該合金在周期蠕變條件下其變形規律是復雜的,除了彈性應變,塑性應變外,還有滯彈性應變。這種變形規律的特征隨周期應力卸載條件下最小應力的大小而變化。在高的最小應力條件下,可以表現為合金以不同的應變速率分別在高、低應力下交替地進行。Abstract: Cyclic creep tests were conducted in an iron-base superalloy GH132 at 650℃ and constant maximum stress (46kg/mm2) with different minimum stresses(10,23 and 43kg/mm2). Deformation at cyclic creep is complicated. Beside elastic and plastic deformation, an elastic deformation occurs at cyclic creep. Deformation behaviour at cyclic creep depends on stress amplitudes and minimum stresses.
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