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軋制驅(qū)動-ECA大應(yīng)變純鋁的強化機理
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國家自然科學(xué)基金(51074079)；江蘇省高?？蒲谐晒a(chǎn)業(yè)化推進項目(JH10-37)；江蘇大學(xué)“拔尖人才培養(yǎng)工程基金”(1211110001)；江蘇省高校研究生科研創(chuàng)新計劃項目 (CXZZ12-0657)


Strengthening Mechanism of the Large Straining CP Al Processed by Rolling Driven-ECA
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    摘要:

    研究了經(jīng)過軋制驅(qū)動等通道轉(zhuǎn)角大應(yīng)變加工的商業(yè)純鋁的強化機理?；赬RD分析和Taylor公式的定量計算說明，軋制驅(qū)動ECA大應(yīng)變CP Al的內(nèi)部位錯密度很低。通過晶體微區(qū)取向分析技術(shù)（EBSD）對大應(yīng)變材料內(nèi)部的小角度界面和大角度界面進行表征，發(fā)現(xiàn)材料內(nèi)部大多數(shù)是小角度晶界；基于Hall-Petch關(guān)系對大應(yīng)變純鋁的強化機理進行定量分析，得出其強化主要來自于小角度晶界強化

    Abstract:

    The strengthening mechanism of the large straining CP Al processed by rolling driven-ECA (Equal Channel Angular) was investigated. A theoretical calculation based on XRD analysis and Taylor equation indicates that the dislocation density of the large straining CP Al by rolling driven-ECA is very low. Low angle grain boundary and high angle grain boundary were measured by a crystal micro area orientation analysis technique and the results demonstrate that the low angle grain boundary is much more. Strengthening mechanisms of the large straining CP Al were quantitatively calculated based on the Hall-Petch relationships, and it is concluded that the strengthening mainly comes from the low angle grain boundary

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盧予東,許曉靜,陸文俊,蔣 凌,馬文海,郭云飛,王子路.軋制驅(qū)動-ECA大應(yīng)變純鋁的強化機理[J].稀有金屬材料與工程,2015,44(6):1451~1454.[Lu Yudong, Xu Xiaojing, Lu Wenjun, Jiang Ling, Ma Wenhai, Guo Yunfei, Wang Zilu. Strengthening Mechanism of the Large Straining CP Al Processed by Rolling Driven-ECA[J]. Rare Metal Materials and Engineering,2015,44(6):1451~1454.]
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  • 收稿日期:2014-06-10
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  • 在線發(fā)布日期: 2016-01-04
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