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首页> 外文期刊>Metallic materials >Effect of casting parameters on the microstructure and mechanical properties of squeeze cast A380 aluminum die cast alloy
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Effect of casting parameters on the microstructure and mechanical properties of squeeze cast A380 aluminum die cast alloy

机译：铸造参数对挤压铸造A380铝压铸合金组织和力学性能的影响

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A380 Al-Si-Cu die casting alloy is the most common of all die casting Al alloys and is used especially in the automotive industry due to the best combination of utility and cost. A high percentage of these components are produced by a high pressure die casting process; however, the quality and performance of these components need to be improved. Therefore, different approaches to component-making have been introduced such as semi-solid forming or squeeze casting over the last four decades. In the present study, direct squeeze casting of A380 alloy as a function of applied pressure was investigated. Applied pressures from 10 MPa to 50 MPa were considered and compared with gravity die cast samples. SDAS values ranging from 5.70 μm to 10 μm have been obtained by squeeze casting whereas 13.70 urn was found in gravity die casting. Density measurements and mechanical tests show us that the porosity level and presence of micro-voids were greatly decreased with increasing pressure while ultimate tensile strength and elongation increased in squeeze cast parts.
机译：A380 Al-Si-Cu压铸合金是所有压铸铝合金中最常见的合金，由于实用性和成本的最佳结合，特别是在汽车工业中使用。这些部件中的很大一部分是通过高压压铸工艺生产的。但是，这些组件的质量和性能需要提高。因此，在过去的四十年中，已引入了不同的零件制造方法，例如半固态成型或挤压铸造。在本研究中，研究了A380合金的直接挤压铸造与施加压力的关系。考虑施加的压力为10 MPa至50 MPa，并将其与重力压铸样品进行比较。通过挤压铸造获得的SDAS值为5.70μm至10μm，而在重力压铸中发现的SDAS值为13.70 um。密度测量和机械测试表明，随着压力的增加，孔隙率和微孔的存在大大降低，而挤压铸件的极限抗拉强度和伸长率却增加。

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