Creep damage is mainly caused by superheat.Becaus e of superheat, creep cavities are formed inside microstructure, under heat stres s condition, growth and join of cavities induce creep cracking.
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释义
高温蠕变损伤是由于过热引起的,过热使金相组织内部产生蠕变空洞,在热应力下空洞扩展连接而形成蠕变裂纹。
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