Superplasticity of a AIN/Mg-5wt%Al alloy composite made by a vortex method
Superplasticity of a AIN/Mg-5wt%Al alloy composite made by a vortex method
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DOI：
10.1016/s1359-6462(96)00429-0
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发表时间：
1997-03
影响因子：
6
通讯作者：
T. Imai;Suk-won Lim;D. Jiang;Y. Nishida
中科院分区：
文献类型：
--
作者：
T. Imai;Suk-won Lim;D. Jiang;Y. Nishida
镁基复合材料具有密度低、力学性能、物理性能和热性能优良等特点，在汽车、航空航天等领域具有广阔的应用前景。高应变速率超塑性（HSRS）是镁基复合材料近净成形的有效方法，在0.1 ~ 10 s 1的高应变速率下，材料的延伸率可达250--600%。研究了用涡旋法制备的AlN颗粒增强Mg-5wt%Al合金复合材料中的高速剪切应力。此外，还对镁基复合材料的超塑性变形机理进行了探讨。
Magnesium (Mg) matrix composites has a great potential to apply to automobile, aerospace industries since the density of magnesium is low as compared with other metal alloys and the composite is expected to achieve excellent mechanical, physical and thermal properties. High Strain Rate Superplasticity (HSRS) is expected to offer the efficiently near-net shape forming method for magnesium matrix composites, since HSRS materials usually exhibit an elongation of 250--600% at a high strain rate of about 0.1--10s{sup {minus}1}. The purpose of this study is to reveal the HSRS in a AlN particulate reinforced Mg-5wt%Al alloy composite fabricated by a vortex method. In addition, the superplastic deformation mechanism of the Mg matrix composite will be discussed.