Xinyu Wang , Kai Zhao , Yanqiang Li , Xiangting Liu , Haonan Wang , Xinchen Li , Tao Zhang , Ying Fu , Zongning Chen , Huijun Kang , Enyu Guo , Tongmin Wang
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引用次数: 0
Abstract
Vacuum-assisted high-pressure die casting (HPDC) is widely employed in high-end sectors such as base station equipment and new energy vehicles, owing to its exceptional forming precision and outstanding casting performance. Concurrently, with the progress of green manufacturing, recycled aluminum alloys have emerged as a vital option for meeting sustainable development needs, thanks to their high resource utilization and cost-effectiveness. However, accumulation of Ferrum (Fe) in recycled aluminum can lead to the formation of coarse and irregularly shaped Fe-rich intermetallics, leading to the impairment of the mechanical characteristics of the material. This work explores the impact of TiB2 particles on the mechanical performance of an AlSi10Mg alloy containing up to 0.7 wt% Fe prepared by vacuum-assisted HPDC process. The study confirms that the use of TiB2 particles improved the ductility of the castings markedly. The modified alloy achieves a tensile strength of 312 ± 10 MPa and an elongation of 9.2 ± 0.3 %. The elongation has recorded an improvement of 50.8 % with respect to the base alloy. The microstructural observation demonstrated that such an improvement can be primarily attributed to transformation of Fe-rich intermetallics from π-AlSiMgFe to β-AlSiFe type, as an unprecedent results of the TiB2 incorporation.
期刊介绍:
Materials Science and Engineering A provides an international medium for the publication of theoretical and experimental studies related to the load-bearing capacity of materials as influenced by their basic properties, processing history, microstructure and operating environment. Appropriate submissions to Materials Science and Engineering A should include scientific and/or engineering factors which affect the microstructure - strength relationships of materials and report the changes to mechanical behavior.