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发表于 2009-4-15 11:36:30
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原帖由 陆丰 于 2009-4-15 10:58 发表 
Precipitation heat treatment ——沉淀硬化处理
Age hardening——时效硬化
I agree with No.14.
Generally, we use aging to obtain fine precipitaions, which can help to strengthen.
In most cases, aging equals precipitation heat treatment.
Aging is a kind of process, while precipitation strengthening is purpose. |
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