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首页> 外文期刊>Journal of Materials Engineering and Performance >Mechanical Properties and Microstructure of Mg-SiCp Composite Sheets Fabricated by Sintering and Warm Rolling
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Mechanical Properties and Microstructure of Mg-SiCp Composite Sheets Fabricated by Sintering and Warm Rolling

机译：烧结和温轧制造的Mg-SICP复合板的机械性能和微观结构

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摘要

In this study, magnesium matrix composite sheets were fabricated by applying powder metallurgy and warm rolling methods. After preparing required mixtures of magnesium powder and SiC particles in different conditions, they were cold-pressed and sintered. Then, the sintered specimens were warm rolled through different numbers of passes. The effects of ball-milling process and the number of rolling passes were investigated on the tensile strength, hardness, microstructure, and fracture surface of magnesium matrix composites. The results were compared to those monolithic magnesium specimens (without reinforcement particle) produced in a way similar to that of the composites. The results show that among different factors (i.e., ball-milling process, the presence of SiC particles, and the number of rolling passes), the number of rolling passes is the most effective parameter on increasing the ultimate tensile strength (UTS), Vickers microhardness, and grain refinement. In this regard, UTS of the samples was increased at least 163% between second and sixth rolling passes. Moreover, for the sintered and six-pass rolled composite samples, microhardness and grain refinement were improved, respectively, about 30 and 70%.
机译：在该研究中，通过施加粉末冶金和温暖的轧制方法制造镁基质复合片材。在制备所需的镁粉末和SiC颗粒的不同条件下的混合物后，它们是冷压和烧结的。然后，烧结标本通过不同数量的通过滚动。研究了球铣过程的效果和滚动通道的数量对镁基复合材料的拉伸强度，硬度，微观结构和断裂表面进行了研究。将结果与以类似于复合材料的方式制备的那些整体镁试样（不具有增强颗粒）进行比较。结果表明，在不同的因素（即球磨过程中，SiC颗粒的存在和滚动通行证的数量）中，轧制通行证的数量是增加最终拉伸强度（UT）的最有效参数（UTS），维氏微硬度和晶粒细化。在这方面，在第二和第六轧辊之间，样品的UTS至少增加163％。此外，对于烧结和六通轧制复合样品，分别改善了微硬度和晶粒细化，分别为约30和70％。

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