Tempering is possible because of the instability of the martensite, the principal constituent of hardened steel.
由于马氏体这一淬硬钢主要成分的不稳定性，使得回火成为可能。
Retained austenite reduction and carbide precipitations in the martensite are anticipated by the tempering process.
减少残余奥氏体和马氏体碳化物的降水预计的回火工艺。
The final structure obtained from tempering a fully hardened steel is called tempered martensite.
回火完全淬硬钢得到的最终组织结构被称为回火马氏体。
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