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大塑性變形制備超細(xì)晶鋁鋰合金的組織及力學(xué)性能研究進(jìn)展
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河海大學(xué)力學(xué)與材料學(xué)院

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中央高?；究蒲袠I(yè)務(wù)費(fèi)項(xiàng)目（HHU2016B10314）；江蘇省青藍(lán)工程和六大人才高峰項(xiàng)目（2014-XCL-023）；宿遷市科技公共服務(wù)平臺(tái)項(xiàng)目 (M201614)


Overview on the microstructure and mechanical properties of ultrafine-grained Al-Li alloys produced by severe plastic deformation
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College of Mechanics and Materials,Hohai University

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the Fundamental Research Funds for the Central Universities (Grant No. HHU2016B10314)；Qing Lan Project and Six Major Talent Peaks Project of Jiangsu Province of China (Grant No.2014-XCL-023)；Public Science & Technology Service Platform Program of Suqian City of China（Grant No. M201614）

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    摘要:

    近年來(lái),圍繞超細(xì)晶鋁鋰合金的制備及其性能提升方面開(kāi)展了許多研究。本文綜述了大塑性變形工藝制備超細(xì)晶鋁鋰合金的顯微組織及其力學(xué)性能,分析了大塑性變形過(guò)程中鋁鋰合金的組織演變及其影響因素。鋁鋰合金的強(qiáng)化機(jī)制主要是基于析出強(qiáng)化,結(jié)合大塑性變形得到的超細(xì)晶粒組織可以顯著提高強(qiáng)度和塑性,并得到優(yōu)異的超塑性。表明大塑性變形加工鋁鋰合金,尤其是等通道擠壓制備的超細(xì)晶鋁鎂鋰合金在超塑性工業(yè)具有廣闊的發(fā)展前景。

    Abstract:

    In recent years, fabrication of bulk ultrafine-grained (UFG) Al-Li alloys via severe plastic deformation (SPD) techniques has been investigated to improve properties for expanding its applications as structural products. This review reveals microstructure and mechanical properties of Al-Li alloys produced by SPD techniques. It focuses on the microstructure evolution during SPD, with the influence of internal and external factors. The strengthening mechanism of Al-Li alloys mainly based on precipitation hardening is presented. It is demonstrated that UFG Al-Li may attain enhanced strength with relatively good ductility via grain refinement and multiple precipitates. Special attention is given to the superplasticity of UFG Al-Li alloys, especially to the high strain rate superplasticity (HSR SP). It suggests that UFG Al-Mg-Li alloy produced by SPD, particularly by equal-channel angular pressing (ECAP), is a promising candidate material for use in superplastic forming operations.

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袁婷,江靜華,王莉莎,馬愛(ài)斌.大塑性變形制備超細(xì)晶鋁鋰合金的組織及力學(xué)性能研究進(jìn)展[J].稀有金屬材料與工程,2019,48(1):55~62.[Yuan Ting, Jiang Jinghua, Wang Lisha, Ma Aibin. Overview on the microstructure and mechanical properties of ultrafine-grained Al-Li alloys produced by severe plastic deformation[J]. Rare Metal Materials and Engineering,2019,48(1):55~62.]
DOI：10.12442/j. issn.1002-185X.20170586

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  • 收稿日期:2017-07-03
  • 最后修改日期:2017-08-18
  • 錄用日期:2017-09-11
  • 在線發(fā)布日期: 2019-02-18
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