文章摘要
曹富荣.Mg-Li系合金超塑性研究进展[J].精密成形工程,2017,9(3):8-12.
CAO Fu-rong.Superplasticity of Mg-Li System Alloys[J].Journal of Netshape Forming Engineering,2017,9(3):8-12.
Mg-Li系合金超塑性研究进展
Superplasticity of Mg-Li System Alloys
投稿时间:2017-02-21  修订日期:2017-05-10
DOI:10.3969/j.issn.1674-6457.2017.03.002
中文关键词: Mg-Li合金  超塑性  剧烈塑性变形
英文关键词: Mg-Li alloy  superplasticity  severe plastic deformation
基金项目:国家自然科学基金(51334006)
作者单位
曹富荣 东北大学 材料科学与工程学院沈阳 110819 
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中文摘要:
      超塑性是材料在一定温度和应变速率下表现出异常高塑性的能力。Mg-Li合金具有超轻的密度、高比刚度和良好的电磁屏蔽能力,可望在航天、军事、汽车、3C电子等领域获得应用。综述了国内外Mg-Li合金超塑性研究现状,介绍了轧制、挤压、等通道转角挤压、搅拌摩擦加工、差速轧制、高压扭转和多向锻造方法获得的超塑性。指出了Mg-Li合金超塑性存在的问题和今后进一步研究的方向。
英文摘要:
      Superplasticity is exceptionally high plasticity exhibited by materials at certain temperature and strain rate. By taking advantage of ultra-light density, high specific stiffness and good electromagnetic shielding capability, Mg-Li alloys were expected to be applied in aerospace, military affairs, automobile, 3C electronic field, etc. Research status of superplasticity of Mg-Li system alloys at home and abroad was reviewed. The superplasticity induced by rolling, extrusion, equal channel angular pressing, friction stir processing, differential speed rolling, high-pressure torsion and multidirectional forging was introduced. Existing problems and further research direction were pointed out for the superplasticity of Mg-Li system alloys.
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