回火托氏体
- 网络tempered troostite;tempered martensite
回火托氏体-
结果表明，冷轧工作辊在粗磨过程中因磨削过热，使其表层的回火马氏体转变为回火托氏体，改变了表面应力状态，导致表面出现裂纹。
It is supposed that superheat generated during rough grinding changes surface stress , resulting in the surface fissures .
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结果表明：H13钢在300℃～630℃温度范围内回火，显微组织经历了由回火马氏体组织向回火托氏体组织的转变过程，在520℃左右出现二次硬化峰。
The results show that the microstructure transforms from temper martensite to temper troostite when the temper temperature is from 300 ℃ to 630 ℃, and the peak of secondary hardening appears at about 520 ℃ .