overaging 中文意思是什麼
overaging
解釋
超齡的；老朽的；舊式的-
Ecap was successfully used to refine ly12 alloy to 0. 5 m at room temperature after seven passes. the pretreatment process concluded from experiments was solution treated at 500 for 2h and overaging at 400 for 8h
對普通高強度鋁合金ly12的室溫ecap的研究表明： ecap前的預處理對ly12室溫ecap的實現具有重要影響，採用500 2h固溶+ 400 8h過時效的預處理工藝，經七道次室溫ecap后，晶粒細化至0 . 5 m 。
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