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熱處理對(duì)MWCNTs/AZ80鎂基復(fù)合材料組織和力學(xué)性能的影響
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國(guó)家自然科學(xué)基金 (51201087，51265043, 51364037); 江西省自然科學(xué)基金 (20132BAB216013); 西北工業(yè)大學(xué)凝固技術(shù)國(guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金項(xiàng)目 (SKLSP201306); 江西省教育廳科學(xué)技術(shù)研究項(xiàng)目 (GJJ13493); 輕合金加工科學(xué)與技術(shù)國(guó)防重點(diǎn)學(xué)科實(shí)驗(yàn)室開(kāi)放基金資助項(xiàng)目 (GF201301003)


Effect of Heat Treatment on Microstructure and Mechanical Property of MWCNTs/AZ80 Composite
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    摘要:

    采用攪拌摩擦加工法制備了不同體積分?jǐn)?shù)碳納米管增強(qiáng)AZ80鎂基復(fù)合材料，考察了固溶+時(shí)效熱處理對(duì)復(fù)合材料的微觀組織和力學(xué)性能的影響。結(jié)果表明：鎂基復(fù)合材料組織致密，晶粒細(xì)小，其中的碳納米管均勻分布；熱處理導(dǎo)致碳納米管與AZ80基體界面上有A13Ni2化合物生成，改善了界面結(jié)構(gòu)；復(fù)合材料的抗拉強(qiáng)度隨碳納米管體積分?jǐn)?shù)的增加逐漸增加，固溶+時(shí)效處理后的復(fù)合材料的抗拉強(qiáng)度有所提高，影響MWCNTs/AZ80復(fù)合材料力學(xué)性能的主要因素是碳納米管與鎂基體之間的界面結(jié)合情況

    Abstract:

    AZ80 magnesium based composites strengthened by multi-walled carbon nanotubes (MWCNTs) of different volume fractions were fabricated by friction stir processing (FSP) and the effect of heat treatment on microstructure and mechanical property of MWCNTs/AZ80 were investigated. The results show that the Mg-based composites are dense with fine grains, in which MWCNTs distribute uniformly. A13Ni2 intermetallic compounds are formed on the interface between the MWCNTs and the magnesium matrix, leading to a sound bonding condition. The tensile strength of the composites increases with the increase of volume fraction of the MWCNTs, and it is also improved by the post heat treatment of solid solution and aging. The major factor affecting the mechanical property of the MWCNTs/AZ80 is the interface structure between the MWCNTs and the magnesium matrix

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劉奮成,賀立華,柯黎明,簡(jiǎn)曉光,劉 強(qiáng).熱處理對(duì)MWCNTs/AZ80鎂基復(fù)合材料組織和力學(xué)性能的影響[J].稀有金屬材料與工程,2015,44(4):989~994.[Liu Fencheng, He Lihua, Ke Liming, Jian Xiaoguang, Liu Qiang. Effect of Heat Treatment on Microstructure and Mechanical Property of MWCNTs/AZ80 Composite[J]. Rare Metal Materials and Engineering,2015,44(4):989~994.]
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  • 收稿日期:2014-04-12
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  • 在線發(fā)布日期: 2015-06-08
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