craving
发表于 2025-3-30 08:37:00
Primary Creep,ata. For the martensitic 9–12% Cr steels at least two dislocation densities are needed to represent primary creep because the initial dislocation density is high contrary to the situation for annealed fcc materials.
Fantasy
发表于 2025-3-30 14:12:25
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辞职
发表于 2025-3-30 19:03:02
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obnoxious
发表于 2025-3-31 00:44:19
Stationary Creep, result of a balance between work hardening and recovery processes, which allows for a continues plastic deformation without raising the stress. The starting point for the basic modeling of creep is a differential equation for the dislocation density that describes how it varies with strain or time.
Inordinate
发表于 2025-3-31 03:22:18
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LEVER
发表于 2025-3-31 08:43:00
Primary Creep,g to the phi model, the creep rate is linear in strain and time in a double logarithmic diagram. When using empirical descriptions of the creep curves, these models are recommended. Several basic models for primary creep are derived. They are based on the creep rate in the secondary stage. This mean
敬礼
发表于 2025-3-31 09:45:26
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