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軋制及后續(xù)熱處理對(duì)5052鋁合金拉伸性能與晶體取向的影響
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國(guó)家自然科學(xué)基金 (51074079)


Effect of Rolling and Subsequent Heat Treatment on Tensile Property and Crystal Orientation of 5052 Al Alloy
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    摘要:

    采用軋制技術(shù)對(duì)退火態(tài)5052鋁合金進(jìn)行大應(yīng)變加工，并進(jìn)行后續(xù)200 ℃/1 h、350 ℃/1 h、500 ℃/1 h的熱處理，研究了軋制及熱處理對(duì)5052鋁合金的硬度、拉伸性能和晶體取向的影響。結(jié)果表明，軋制可以有效提高5052鋁合金的硬度與屈服強(qiáng)度。由于材料在244.8 ℃時(shí)再結(jié)晶，350 ℃/1 h和500 ℃/1 h的后續(xù)熱處理使5052鋁合金的硬度和拉伸性能持續(xù)下降。XRD分析得出軋制及后續(xù)熱處理未能有效調(diào)控合金的晶體取向?；赥aylor公式的定量計(jì)算說(shuō)明，軋制變形過(guò)程中所引入的位錯(cuò)只是5052鋁合金強(qiáng)度提升的因素之一

    Abstract:

    Hardness，tensile property and crystal orientation of 5052 Al alloy after rolling process and different subsequent heat treatments (200 ℃/1 h, 350 ℃/1 h, 500 ℃/1 h, respectively) were studied. The study indicates that the hardness and the yield strength of commercial purity aluminium can be effectively improved by rolling process. As the material recrystallization occurs at 244.8 ℃, the subsequent heat treatments of 350 ℃/1 h and 500 ℃/1 h will make the hardness and the tensile property of 5052 Al alloy continue to drop. The results of analysis based on XRD show that crystal orientation has little improvement by rolling process and its subsequent heat treatment. Quantitative calculation based Taylor's formula shows that the dislocation introduced by rolling deformation process is one of the factors of 5052 Al alloy strength enhancing

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許曉靜,蔣 凌,陸文俊,盧予東,費(fèi)震旦,成 城.軋制及后續(xù)熱處理對(duì)5052鋁合金拉伸性能與晶體取向的影響[J].稀有金屬材料與工程,2014,43(1):245~248.[Xu Xiaojing, Jiang Ling, Lu Wenjun, Lu Yudong, Fei Zhendan, Cheng Cheng. Effect of Rolling and Subsequent Heat Treatment on Tensile Property and Crystal Orientation of 5052 Al Alloy[J]. Rare Metal Materials and Engineering,2014,43(1):245~248.]
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  • 收稿日期:2013-01-28
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  • 在線發(fā)布日期: 2014-04-16
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