| 蛇形通道浇注流变压铸铝合金拉伸试样的力学性能和微观组织(英文) |
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| 引用本文： | 陈正周,毛卫民,吴宗闯.蛇形通道浇注流变压铸铝合金拉伸试样的力学性能和微观组织(英文)[J].中国有色金属学会会刊,2011(7). |
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| 作者姓名： | 陈正周 毛卫民 吴宗闯 |
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| 作者单位： | 北京科技大学材料科学与工程学院; |
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| 基金项目： | Project(2006AA03Z115) supported by the National High-tech Research and Development Program of China; Project(2011CB606302-1) supported by the National Basic Research Program of China; Project(50774007) supported by the National Natural Science Foundation of China |
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| 摘 要： | 开发出一种新颖的A356铝合金半固态加工技术——蛇形通道浇注流变压铸技术(SCRC)。采用SCRC技术制备A356铝合金拉伸试样,并研究试样在铸态和T6热处理条件下的力学性能和微观组织。结果表明:在铸态下拉伸试样的抗拉强度可达到250MPa左右,伸长率在8.6%-13.2%;经过T6热处理后,抗拉强度可提高约30%,但伸长率略有下降。在这些实验条件下,蛇形通道浇注技术可制备出初生α1(Al)的形状因子为0.78-0.89和晶粒尺寸为35-45μm的优质半固态A356铝合金浆料。与传统压铸工艺相比,SCRC技术可改善拉伸试样的微观组织并提高它的力学性能。这种SCRC技术具有与传统压铸设备衔接简便、取消了半固态浆料的保存及输送步骤和具有较高的性价比等优点。
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| 关 键 词： | 流变压铸 A356铝合金 蛇形通道 力学性能 微观组织 |
Mechanical properties and microstructures of Al alloy tensile samples produced by serpentine channel pouring rheo-diecasting process |
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| CHEN Zheng-zhou,MAO Wei-min,WU Zong-chuang School of Materials Science , Engineering,University of Science , Technology Beijing,Beijing ,China.Mechanical properties and microstructures of Al alloy tensile samples produced by serpentine channel pouring rheo-diecasting process[J].Transactions of Nonferrous Metals Society of China,2011(7). |
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| Authors: | CHEN Zheng-zhou MAO Wei-min WU Zong-chuang School of Materials Science Engineering University of Science Technology Beijing Beijing China |
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| Affiliation: | CHEN Zheng-zhou,MAO Wei-min,WU Zong-chuang School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China |
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| Abstract: | An innovative one-step semi-solid processing technique of A356 Al alloy,the serpentine channel pouring rheo-diecasting process (SCRC),was explored.The mechanical properties and microstructures of the tensile samples made by the SCRC technique were tested in the as-cast and T6 heat treatment conditions.The experimental results show that the as-cast ultimate tensile strength can reach about 250MPa and the elongation is 8.6%?13.2%.The ultimate tensile strength can increase approximately 30% higher than that of... |
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| Keywords: | rheo-diecasting A356 aluminum alloy serpentine channel mechanical properties microstructure |
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