High strain rate superplasticity of TiC particulate reinforced magnesium alloy composite by vortex method
High strain rate superplasticity of TiC particulate reinforced magnesium alloy composite by vortex method
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DOI：
10.1016/0956-716x(95)00005-g
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发表时间：
1995-06
期刊：
影响因子：
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通讯作者：
Suk-won Lim;T. Imai;Y. Nishida;T. Choh
中科院分区：
文献类型：
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作者：
Suk-won Lim;T. Imai;Y. Nishida;T. Choh
研究了涡旋法、挤压法和热轧法制备Mg-5%Zn/TiCp复合材料的超塑性特性。得到以下结果：(1)当Vf = 0.20时，复合材料的应变率灵敏度（m值）约为0.33；(2)热轧复合材料在743 K应变率0.067 s{sup{负}1}时的总伸长率为340%；(3)在Mg-5%Zn基体固相温度以上，复合材料变形明显，断口呈纤维状，表明存在部分熔融；(4)液相的存在可以增强镁基复合材料中的HSRS现象。
The superplastic characteristics of a Mg-5%Zn/TiCp composite, fabricated by vortex method, extrusion, and hot-rolling, were investigated. The following results were obtained: (1) the strain rate sensitivity (m value) of the composite with Vf = 0.20 is about 0.33; (2) the hot-rolled composite exhibited a total elongation of 340% at strain rates 0.067 s{sup {minus}1} at 743 K; (3) the fracture surface of the composite showed fibrous features, indicating the presence of partial melting, since the composite was deformed apparently above the solidus temperature of the Mg-5%Zn matrix; (4) the presence of the liquid phase can enhance HSRS phenomenon in magnesium based composite.