• 新闻动态
联系我们
单位:铸造杂志社
地址:沈阳市铁西区云峰南街17号
邮编:110022
电话:024-25847830-804
传真:024-25611880
电子信箱:ISNASCT_FJA@163.com
jiyongpan@163.com
专题报告您当前位置:首页 >会议报告 >专题报告 >浏览文章

Squeeze Casting of Aluminum Alloy A380: Microstructure and Tensile Behavior

更新时间:2015-6-8 14:56:29  点击:0

报告人 胡宏发
报告标题 Squeeze Casting of Aluminum Alloy A380: Microstructure and Tensile Behavior
报告摘要 High-pressure die cast aluminum alloy A380 is the most commonly used aluminum alloy for producing various automotive components due to its excellent castability, moderate as-cast mechanical properties, and low cost. For further expansion of its usage to the area where heavy dynamic loading is required in vehicles, novel manufacturing processes need to be developed. In this study, squeeze casting is used to cast A380 because of its excellent formability, close dimensional tolerance and high productivity. Squeeze casting of A380 alloy with a relatively thick cross-section of 25 mm was experimented using a hydraulic press with an applied pressure of 90 MPa. Microstructure and tensile properties of the squeeze cast A380 were characterized and evaluated in comparison with the die cast counterpart. The squeeze cast A380 possesses a porosity level much lower than the die cast alloy, which is disclosed by both optical microscopy and the density measurement technique. The results of tensile testing indicate the improved tensile properties, specifically ultimate tensile strength and elongation, for the squeeze cast samples over those of the conventional high-pressure die cast part. The analysis of tensile behavior shows that the squeeze cast A380 exhibited a high tensile toughness and resilience compared with the die cast alloy, despite that, during the onset of plastic deformation, the strain-hardening rate of the die cast specimen is higher than that of the squeeze cast specimens. The microstructure analyzed by the scanning electron microscopy (SEM) shows that both the squeeze and die cast specimens contains the primary α-Al, Al2Cu, Al5FeSi phase, and the eutectic Si phase. But, the Al2Cu phase present in the squeeze cast alloy is relatively large in size and quantity. The SEM fractography evidently reveals the ductile fracture features of the squeeze cast alloy A380.
报告人简介 胡宏发博士 现任加拿大温沙大学机械,汽车材料工程系的终身正教授。他曾经在美国Ryobi 压力铸造有限公司任高级工程师,在Meridian 铸造有限公司任首席冶金学家,在此之前,他任加拿大魁北克镁合金技术研究所项目负责人。
他于1996年在多伦多大学获得博士学位,1991年温沙大学获得硕士学位,1985年上海工业大学获得学士学位。 他在1995年至1997年间曾与加拿大自然科学工程研究委员会合作完成多项研究。他撰写的论文超过150篇, 覆盖研究领域包括镁和铝合金,复合材料,金属铸造,计算机模拟和物理冶金学。他担任冶金材料学报,加拿大自然科学工程研究委员会,自然科学基金 (美国),加拿大冶金季刊的主审。他还曾担任很多学术会议,比如,加拿大采矿冶金协会,美国铸造协会,以及美国汽车研究协会 相关分会 的主席。
胡宏发博士目前的研究方向是轻金属及其合金的加工和评估。他基本的研究主要集中在凝固,轻合金铸造的建模及数值模拟,相变和分解动力机制。他的应用研究包括镁和铝合金在汽车领域的应用,新材料的铸造过程和成本效益。他在轻金属及其合成材料方面的研究工作已经引起几大汽车公司的注意。
【打印】【关闭】 | 【返回】
地址:沈阳市铁西区云峰南街17号(110022)    电话:024-25847830-804    传真:024-25611880
版权所有:有色合金及特种铸造技术国际研讨会 版权所有 网站统计: ICP备案编号:辽ICP备05018365号