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82问答网 > 热处理中，Ac1.Acm.Ar1.等。这些线都代表多少温度的..知道的谢谢你们

热处理中，Ac1.Acm.Ar1.等。这些线都代表多少温度的..知道的谢谢你们

2025-03-15 22:42:27

推荐回答（1个）

回答1：

Ac1：加热时珠光体向奥氏体转变的开始温度；
Ar1：冷却时奥氏体向珠光体转变的开始温度；
Ac3：加热时游离铁素体全部转变为奥氏体终了温度；
Ar3：冷却时奥氏体开始析出游离铁素体的温度；
Accm：加热时二次渗碳体全部溶入奥氏体的终了温度；
Arcm：冷却时奥氏体开始析出二次渗碳体的温度。

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