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首页> 外文期刊>Materiali in Tehnologije >INVESTIGATION OF THE MECHANICAL PROPERTIES OF A SQUEEZE-CAST LM6 ALUMINIUM ALLOY REINFORCED WITH A ZINC-COATED STEEL-WIRE MESH
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INVESTIGATION OF THE MECHANICAL PROPERTIES OF A SQUEEZE-CAST LM6 ALUMINIUM ALLOY REINFORCED WITH A ZINC-COATED STEEL-WIRE MESH

机译：用锌涂层钢丝网加固挤压铸造LM6铝合金力学性能的研究

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摘要

Composites of an LM6 aluminium alloy reinforced with a zinc-coated steel-wire mesh were prepared with squeeze casting. Three different orientations of 0 degrees, 45 degrees and 90 degrees of the zinc-coated steel-wire mesh were used with the aluminium alloy. The microstructures of the castings were analysed and the hardness, tensile strength and ductility were investigated. The fracture surfaces of the matrix and the composites were examined using a field-emission scanning electron microscope (FESEM). The results revealed that the hardness of the composites increased compared to the matrix. Also, the tensile strength of the composites increased with the increasing angle of orientation. The tensile strength increased by up to 11 % for the composite with a steel-wire mesh at the 90 degrees orientation. However, the ductility of the composites decreased due to the presence of micropores at the interface of aluminium and the steel-wire mesh. Micrographs of fracture surfaces showed a dimple formation in the matrix and a wire pull-out; a broken wire was observed in the composites.
机译：用挤压铸造制备用锌涂层钢丝网增强的LM6铝合金的复合材料。与铝合金一起使用三个不同的0度，45度和90度的锌涂覆的钢丝网。分析了铸件的微观结构，研究了硬度，拉伸强度和延展性。使用现场发射扫描电子显微镜（FESEM）检查基质和复合材料的断裂表面。结果表明，与基质相比，复合材料的硬度增加。而且，复合材料的拉伸强度随着取向角度的增加而增加。在90度取向的钢丝网中，抗拉强度的拉伸强度增加了高达11％的复合材料。然而，由于铝和钢丝网界面处的微孔存在，复合材料的延展性降低。裂缝表面的显微照片在基质中显示了凹坑形成和电线拉伸;在复合材料中观察到断线。

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