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首页> 外文期刊>Journal of Materials Engineering and Performance >Friction Stir Welding of Al-B4C Composite Fabricated by Accumulative Roll Bonding: Evaluation of Microstructure and Mechanical Behavior
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Friction Stir Welding of Al-B4C Composite Fabricated by Accumulative Roll Bonding: Evaluation of Microstructure and Mechanical Behavior

机译：通过累积辊粘合制造的Al-B4C复合材料的摩擦搅拌焊接：微观结构和机械性能评估

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摘要

In this investigation, friction stir welding (FSW) of Al-B4C composite fabricated by 10 cycles accumulative roll bonding was conducted. In order to investigate the influences of pin geometry on microstructure and mechanical properties, four different pin geometries (cylindrical, square, triangular and hexagonal) were selected. It was found that FSW parameters had a major effect on the fragmentation and distribution of reinforcement particles in stir zone. When the tool travel speed was increased, the distribution of B4C particles was become gradually uniform in the aluminum matrix. The effect of tool rotational speed on the peak temperature was determined to be greater than the tool travel speed. The attained data of tensile properties and microhardness tests showed that the tool travel speed had bilateral effect on the tensile strength. The maximum tensile joint efficiency was obtained as 238% for FSWed of Al-2%B4C composite to annealed base Al sheet.
机译：在该研究中，通过10个循环累积辊粘合制造的Al-B4C复合材料的摩擦搅拌焊接（FSW）。 为了研究销几何形状对微观结构和机械性能的影响，选择了四种不同的销几何形状（圆柱形，方形，三角形和六边形）。 发现FSW参数对搅拌区中增强颗粒的碎裂和分布产生了重大影响。 当刀具行程速度增加时，B4C颗粒的分布在铝基质中逐渐均匀。 测定刀具转速对峰值温度的影响大于工具行进速度。 达到的拉伸性能和显微硬度试验表明，工具行程速度对拉伸强度有双侧作用。 对于退火基础Al板材的Al-2％B4C复合材料，获得最大拉伸接头效率为238％。

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