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） |
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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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