Light materials having high strength-to-weight ratio plays a vital role in material science especially in the field of aerospace, marine transportation, military and structural applications. Composite serves the same. Aluminium matrix composite (AMC) is the aluminium matrix which has high strength-to-weight ratio. The purpose of the work is to investigate the mechanical properties of welded AA2219 aluminium alloy reinforced with titanium carbide particles (TiCp). Aluminium matrix is reinforced with TiCp using modified stir casting process. Optical colour graphs, XRD and EDX analysis reveal the presence of TiCp in cast AMC. Tensile test shows the ultimate tensile strength increases with the percentage of TiCp addition. Cut samples of size 100 mm X 50 mm X 6 mm cast AMC were friction stir welded using response surface modelling. Ultimate tensile strength and joint efficiency were calculated for the weld samples, and the effects of input parameters were investigated. Experimental results indicate that tool pin profile has a significant effect on tensile strength of friction stir-welded joints followed by welding speed. It is evident from the response that tool rotational speed had the least effect on ultimate tensile strength. The calculated joint efficiency of the most weld samples was more than 90% with respect to the ultimate tensile strength of the base metal. This work ensures defect free, high efficiency welded joints produced using a wide range of process parameters and recommends parameters for producing best joint tensile properties.

中文翻译：

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搅拌摩擦焊 AA2219：TiCp 增强复合材料的机械和微观结构表征

具有高强度重量比的轻质材料在材料科学中起着至关重要的作用，尤其是在航空航天、海洋运输、军事和结构应用领域。复合服务相同。铝基复合材料（AMC）是具有高强度重量比的铝基体。这项工作的目的是研究用碳化钛颗粒 (TiCp) 增强的焊接 AA2219 铝合金的机械性能。铝基体采用改进的搅拌铸造工艺用 TiCp 增强。光学彩色图、XRD 和 EDX 分析揭示了铸造 AMC 中存在 TiCp。拉伸试验表明，极限拉伸强度随着 TiCp 添加百分比的增加而增加。尺寸为 100 毫米 X 50 毫米 X 6 毫米铸造 AMC 的切割样品使用响应面建模进行摩擦搅拌焊接。计算了焊接样品的极限抗拉强度和接头效率，并研究了输入参数的影响。实验结果表明，工具销轮廓对搅拌摩擦焊接头的抗拉强度有显着影响，其次是焊接速度。从响应中可以明显看出，工具转速对极限抗拉强度的影响最小。大多数焊缝样品的计算接头效率相对于母材的极限抗拉强度超过 90%。这项工作可确保使用各种工艺参数生产无缺陷、高效的焊接接头，并推荐用于产生最佳接头拉伸性能的参数。实验结果表明，工具销轮廓对搅拌摩擦焊接头的抗拉强度有显着影响，其次是焊接速度。从响应中可以明显看出，工具转速对极限抗拉强度的影响最小。大多数焊缝样品的计算接头效率相对于母材的极限抗拉强度超过 90%。这项工作可确保使用各种工艺参数生产无缺陷、高效的焊接接头，并推荐用于产生最佳接头拉伸性能的参数。实验结果表明，工具销轮廓对搅拌摩擦焊接头的抗拉强度有显着影响，其次是焊接速度。从响应中可以明显看出，工具转速对极限抗拉强度的影响最小。大多数焊缝样品的计算接头效率相对于母材的极限抗拉强度超过 90%。这项工作可确保使用各种工艺参数生产无缺陷、高效的焊接接头，并推荐用于产生最佳接头拉伸性能的参数。大多数焊缝样品的计算接头效率相对于母材的极限抗拉强度超过 90%。这项工作可确保使用各种工艺参数生产无缺陷、高效的焊接接头，并推荐用于产生最佳接头拉伸性能的参数。大多数焊缝样品的计算接头效率相对于母材的极限抗拉强度超过 90%。这项工作可确保使用各种工艺参数生产无缺陷、高效的焊接接头，并推荐用于产生最佳接头拉伸性能的参数。