An Improved Process for Solving the Sintering Problem of Al-Si Alloy Powder Metallurgy

Autor: Hexin Tian, Fachang Zhao, Dongmei Ma, Xingming Zhao, Jingran Meng, Guangan Zhang, Fufa Wu
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Metals, Vol 14, Iss 11, p 1295 (2024)
Druh dokumentu: article
ISSN: 2075-4701
DOI: 10.3390/met14111295
Popis: The Al-Si alloy prepared by the traditional powder metallurgy method has the problems of difficult sintering and low mechanical properties. In this paper, rotary extrusion combined with rapid solidification/powder metallurgy technology (RS/PM) is proposed and designed to produce an Al-10Si alloy. In subsequent sintering at different temperatures, better metallurgical bonding between particles can be achieved to fulfil the aim of improving the mechanical properties of the material. Additionally, the continuous preparation of materials can be achieved. Finally, it is verified that the density of the Al-10Si alloy sintered at 525 °C is 2.61 g/cm3, reaching 97.0% of the theoretical density, and the tensile strength reaches 336 MPa, which is much higher than that of the alloy prepared by the traditional casting method and powder metallurgy method.
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