水冷紊流通道制备半固态A356铝合金浆料及流变压铸

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英文篇名：Preparation of Semi-Solid A356 Al Alloy Slurry by Water-Cooled Turbulent Channel and Rheo-Diecasting 作者：王菊清 ; 陈正周 ; 宋朝辉 英文作者：WANG Ju-qing;CHEN Zheng-zhou;SONG Chao-hui;Cixi ALT Advanced Materials Co., Ltd.;Cixi Huili Machinery and Electric Co., Ltd.; 关键词：半固态 ; 流变压铸 ; A356铝合金 ; 紊流通道 英文关键词：semi-solid;;rheo-diecasting;;A356 aluminum alloy;;turbulent channel 中文刊名：ZZZZ 英文刊名：Foundry 机构：慈溪阿尔特新材料有限公司;慈溪汇丽机电股份有限公司; 出版日期：2019-01-10 出版单位：铸造 年：2019 期：v.68;No.506 基金：国家重点研发计划(2017YFF0207902-01) 语种：中文; 页：ZZZZ201901010 页数：4 CN：01 ISSN：21-1188/TG 分类号：49-52

摘要

在采用水冷紊流通道制备半固态A356铝合金浆料并进行直接流变压铸,对铸件不同位置处的显微组织和铸件T6热处理后的力学性能进行了研究。结果表明:在内浇道的远端,初生α(Al)晶粒形貌比较圆整;靠近内浇道处,初生α(Al)晶粒的形貌较差,但是初生α(Al)晶粒的平均直径差别不大。铸件经T6热处理后,试样的抗拉强度达到308 MPa,伸长率达到6.5%,强韧性较高。
        The semi-solid A356 aluminum alloy slurry was prepared by using water-cooled turbulent channel process, and then the rheo-diecasting of slurry was directly performed. The microstructure of the castings at different positions and the mechanical properties after T6 heat treatment were studied. The results show that the morphology of the primary α(Al) grains is fairly round at far-end of the inner runner. The nearer the distance to the ingate is, the worser the morphology of the primary α(Al) grains is. However, the average diameter of primary α(Al) grains has little difference. After T6 heat treatment, the tensile strength and elongation reach 308 MPa and 6.5%, respectively. This implies that the castings produced by the casting process have high strength and toughness.

引文

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