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等温退火
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isothermal annealing
等温退火
将钢加热到高于奥氏体形成的某一温度,保温一定时间,然后以较快速度冷却到奥氏体不稳定的珠光体转变温度区间,保温适当时间,获得均匀的珠光体组织,然后较慢冷却到500℃左右,再以任意速度(一般采取空冷)冷却至室温的热处理工艺。
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