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Fabrication of AZ31 alloy wire by continuous semisolid extrusion process
  • 期刊名称：Transactions of Nonferrous Metals Society of China
  • 时间：0
  • 页码：729-733
  • 分类：TG379[金属学及工艺—金属压力加工]
  • 作者机构：[1]School of Materials and Metallurgical Engineering,Northeastern University(Shenyang)
  • 相关基金：Projects(50974038,51034002) supported by the National Natural Science Foundation of China;Project (2007AA03Z111) supported by Natural High-tech Research and Development Program of China;Projects(N090502003) supported by the Basic Scientific Research Operation of Center University,China
  • 相关项目：镁合金连续流变挤压成形过程的界面凝固与摩擦机理
作者： Guan, Renguo|Zhao, Zhanyong|Sun, Xiaoping|Huang, Hongqian|Dai, Chunguang|Zhang, Qiusheng|
关键词： CONTINUOUS, SEMISOLID, EXTRUSION, process, AZ31, alloy, TECHNOLOGICAL, conditions, microstructure, PROPERTY
中文摘要：

A novel technology of continuous semisolid extrusion Process(CSEP) was adopted to produce AZ31 alloy structural materials.Effects of technological conditions on the microstructures of AZ31 alloy during CSEP were studied.During the casting process,the non-uniform distribution of microstructures was found in the roll-shoe gap.Microstructure evolution from dendrite to rosette or spherical grains was observed during the casting process by CSEP.The results show that high casting temperature and large cooling intensity can cause non-equilibrium solidification region near the roll surface,large roll-shoe gap width and high cooling intensity can lead to the formation of discontinuous solidification microstructure and slip plane near the shoe surface,which will finally cause the failure of the casting process.The proper casting temperature range of 730-750 °C,the roll cooling intensity of 0.4 L/s and the roll-shoe gap width of less than 10 mm are suggested.Under the suggested conditions,the product with diameter of 10 mm of AZ31 alloy with smooth surface and homogeneous striped microstructure is obtained.The average strength of the product after heat treatment reaches 270 MPa,and the elongation is 16%.

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剪切/振动耦合作用下半固态金属强流变成形
期刊论文 90 会议论文 1 专利 2 著作 1
镁合金连续流变挤压成形过程的界面凝固与摩擦机理
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