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es线是什么线
更新时间: 2021-01-26 00:38:00  

1、ES线是碳在奥氏体中的固溶线, 通常叫做Acm线。

2、由于在1148℃时A中溶碳量最大可 达2.11%, 而在727℃时仅为0.77%, 因此碳质量分数大于0.77%的铁碳合金自1148℃冷至727℃的过程中, 将从奥氏体中析出Fe3C.析出的渗碳体称为二次渗碳体(Fe3CII)。Acm线亦为从奥氏体中开始析出Fe3CII的临界温度线。

关键词: es 什么

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