Novel stainless steel/zinc alloy composites are produced by infiltrating ZA8 zinc alloy into rolled 304 stainless steel wire mesh preforms via squeeze casting. Microstructural characteristics of the composite are observed, and the uniaxial tensile properties at different temperatures are investigated. The tensile properties of the composites of sintered preforms are compared with those of the composites of unsintered preforms. The results indicate that the microstructures and tensile behavior of the composites exhibit anisotropy. The tensile strength of the composite in the longitudinal direction is higher than that in the radial direction and increases with increasing wire fraction. The tensile strength and elongation at the maximum stress of the composite are lower than those of the unreinforced ZA8 alloy tested at room temperature. At an elevated temperature, the tensile strength of the alloy is improved but ductility decreases after adding wire mesh with wire fraction more than a certain value. The strength and elastic modulus of the alloy and composites sharply decrease with an increase in testing temperatures. The tensile strength of the composite decreases after sintering preforms. The fracture surface of the composite shows anisotropy in different directions and different morphologies at different temperatures.

中文翻译：

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挤压铸造不锈钢丝网/ ZA8合金复合材料的制备及各向异性拉伸性能

新型的不锈钢/锌合金复合材料是通过挤压铸造将ZA8锌合金浸入轧制的304不锈钢丝网预成型坯中制成的。观察到复合材料的微观结构特征，并研究了不同温度下的单轴拉伸性能。将烧结的预成型坯的复合材料的拉伸性能与未烧结的预成型坯的复合材料的拉伸性能进行比较。结果表明，复合材料的微观结构和拉伸行为表现出各向异性。复合材料在纵向上的抗拉强度高于在径向上的抗拉强度，并且随着线分数的增加而增加。复合材料在最大应力下的拉伸强度和伸长率低于在室温下测试的未增强ZA8合金的拉伸强度和伸长率。在升高的温度下，合金的抗拉强度得到改善，但是在添加线分数大于一定值的金属丝网后，延展性降低。随着测试温度的升高，合金和复合材料的强度和弹性模量急剧下降。烧结预成型件后，复合材料的拉伸强度降低。复合材料的断裂表面在不同的温度和不同的方向上表现出各向异性。