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首页> 外文期刊>Journal of Materials Engineering and Performance >Effect of Heat Input on Mechanical and Metallurgical Properties of Friction Stir Welded AA6061-10% SiCp MMCs
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Effect of Heat Input on Mechanical and Metallurgical Properties of Friction Stir Welded AA6061-10% SiCp MMCs

机译：热量输入对搅拌摩擦焊接AA6061-10％SiCp MMC力学和冶金性能的影响

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摘要

Metal matrix composites (MMCs) reinforced with SiC particles combine the matrix properties with those of the ceramic reinforcement, leading to higher stiffness and superior thermal stability with respect to the corresponding unreinforced alloys. However, their wide application as structural material needs proper development of a suitable joining process. In this investigation, an attempt was made to study the effect of heat input on the evolution of microstructure in weld region of friction stir welded AA6061-10% SiCp MMCs. The tensile properties of the joints were evaluated and they are related with microstructure and heat input of the process. The microstructure characterization of the weld zone shows evidence of a substantial grain refinement of the aluminum matrix and fracturing of reinforcement particles due to dynamic recrystallization induced by the plastic deformation and frictional heating during welding.
机译：用SiC颗粒增强的金属基复合材料（MMC）将基体性能与陶瓷增强材料相结合，相对于相应的未增强合金，具有更高的刚度和出色的热稳定性。但是，它们作为结构材料的广泛应用需要适当开发合适的连接工艺。在这项研究中，试图研究热输入对搅拌摩擦焊接AA6061-10％SiCp MMC焊接区域中微观组织演变的影响。评估了接头的拉伸性能，它们与工艺的微观结构和热量输入有关。焊接区的微观结构表征表明，由于焊接过程中塑性变形和摩擦加热引起的动态再结晶，铝基体的晶粒细化，增强颗粒破裂。

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