由截线及杠杆定律分析可知，低碳铁素体成核并长大，剩下含碳量高的奥氏体。

Tie-line and level-law calculations show that low-carbon ferrite nucleates and grows, leaving the remaining austenite richer in carbon.

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微观组织观察表明，在锻造或高温轧制状态下获得了以低碳马氏体为主，含少量贝氏体和残余奥氏体的复合组织。

Observations showed that the micro-structure of the steel after forging or high temperature rolling was composed of low-carbon martensite, a little part of bainite and residual austenite.

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与传统的等温淬火工艺相比，“两步法”组织得到显著细化，而基体组织中残余奥氏体体积分数及含碳量无明显不同。

Compared with traditional austempered process, this new method would obtain much finer structure with nearly same volume fraction of retained austenite in matrix and carbon content of austenite.

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