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| 搅拌摩擦加工原位反应制备Al_3Ti-Al表面复合层 | |
| 引用本文： | 钱锦文,李京龙,熊江涛,张赋升,林鑫.搅拌摩擦加工原位反应制备Al_3Ti-Al表面复合层[J].焊接学报,2010,31(8):61-64. |
| 作者姓名： | 钱锦文 李京龙 熊江涛 张赋升 林鑫 |
| 作者单位： | 1. 西北工业大学,凝固技术国家重点实验室,西安,710072;西北工业大学,陕西省摩擦焊接重点实验室,西安,710072 2. 西北工业大学,陕西省摩擦焊接重点实验室,西安,710072 3. 西北工业大学,凝固技术国家重点实验室,西安,710072 |
| 基金项目： | 西北工业大学科技创新基金 |
| 摘 要： | 通过在铝合金1100-H14表面加工矩形凹槽并添加微米级钛粉再进行搅拌摩擦加工(friction stir processing,FSP)的方法,在铝合金表面获得Al3Ti-Al复合层.采用扫描电镜(SEM),能谱分析(EDS)以及X射线衍射(XRD)对表面复合层微观结构及相组成进行了分析,并对复合层的显微硬度进行了检测.结果表明,在FSP强烈的热、力耦合作用下,钛粉产生了碎化,破碎后的钛颗粒与铝产生快速原位反应,生成微米和亚微米级Al3Ti颗粒,残留的钛颗粒和细小的Al3Ti颗粒一同均匀地分布于铝合金基体中,从而使得铝合金表面的硬度得到提高,其平均值达到了71.39HV,为基体硬度的2.1倍. |
| 关 键 词： | 搅拌摩擦加工 原位反应 表面复合层 显微硬度 |
| 收稿时间： | 2009/12/29 0:00:00 |
In-situ synthesized Al3Ti-Al surface composites by friction stir processing |
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| QIAN Jinwen,LI Jinglong,XIONG Jiangtao,ZHANG Fusheng and LIN Xin.In-situ synthesized Al3Ti-Al surface composites by friction stir processing[J].Transactions of The China Welding Institution,2010,31(8):61-64. | |
| Authors: | QIAN Jinwen LI Jinglong XIONG Jiangtao ZHANG Fusheng and LIN Xin |
| Affiliation: | State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an 710072, China;Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi''an 710072, China,Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi''an 710072, China,State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an 710072, China;Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi''an 710072, China,Shaanxi Key Laboratory of Friction Welding Technologies, Northwestern Polytechnical University, Xi''an 710072, China and State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi''an 710072, China |
| Abstract: | After the surface of 1100-H14 Al alloy plate was machined into rectangular grooves which were then filled with Ti powder,the layer of Al3Ti-Al composites was obtained by friction stir processing(FSP).The microstructures,phase compositions and hardness of the layer were analyzed by scanning electron microscopy,EDS and X-ray diffraction.The results show that Ti particles are severely broken under the thermal-mechanical coupling process of FSP,and the broken Ti particles rapidly react in situ with Al matrix and synthesize micron or sub-micron particles of Al3Ti.Owing to the homogeneous distributions of Al3Ti and residual Ti particles in the Al matrix,the microhardness of the layer reaches 71.39 HV,which is 2.1 times of the base metal. |
| Keywords: | friction stir processing in-situ synthesized surface composite layer microhardness |
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