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研究表明,15CrMoVA钢粒状贝氏体组织存在明显的不可逆回火脆性,且脆性温度范围很宽。脆性是由于M/A岛状组织在回火时的分解所引起。
The results show that there are obvious irreversible temper brittleness in 15CrMoVA steel granular bainite and brittle temperature range is very wide. Brittleness is caused by the decomposition of M / A island tissue during tempering.