| 超声处理原位合成TiAl3/7075铝基复合材料的动力学分析 |
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| 引用本文： | 陈小会,胡勇,闫洪. 超声处理原位合成TiAl3/7075铝基复合材料的动力学分析[J]. 兵器材料科学与工程, 2013, 0(3) |
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| 作者姓名： | 陈小会 胡勇 闫洪 |
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| 作者单位： | 南昌大学 共青学院 工程技术系,江西 共青城,332020;华东交通大学 机电学院,江西 南昌,330013;南昌大学 机电工程学院,江西 南昌,330031 |
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| 基金项目： | 国家自然科学基金(51165032);江西省高等学校科技创新团队计划资助项目 |
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| 摘 要： | 采用超声复合原位合成技术制备TiAl3/7075复合材料,建立在超声处理情况下的动力学模型,并进行数值计算。计算表明,与未超声处理相比较,反应时间大幅度缩短。分析影响反应速率的因素,结果表明：在超声波作用下,获得颗粒状的TiAl3相且弥散分布;超声作用增大Al原子的扩散系数、减小边界层的厚度及Ti颗粒的大小,以致加快反应速度。
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| 关 键 词： | 超声处理 原位合成 TiAl3/7075复合材料 动力学 |
Kinetic analysis of in situ synthesized TiAl3/7075 aluminium alloy matrix composites via ultrasonic treatment |
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| CHEN Xiaohui , HU Yong , YAN Hong. Kinetic analysis of in situ synthesized TiAl3/7075 aluminium alloy matrix composites via ultrasonic treatment[J]. Ordnance Material Science and Engineering, 2013, 0(3) |
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| Authors: | CHEN Xiaohui HU Yong YAN Hong |
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| Abstract: | TiAl3/7075 composites were fabricated by in situ synthesis via ultrasonic treatment. A kinetic model of the reaction process acted by ultrasonic wave was built with mathematical calculation. The calculations show that the reaction time comparing with that of no ultrasonic treatment is greatly reduced. Some influencing factors on the reaction rate were analyzed. The results show that granular TiAl3 phases present in the composites and distribute homogeneously. Ultrasonic oscillation can increase the diffusion coefficient of aluminium atom,decrease the thickness of boundary layer and the size of titanium particle,all these accelerates the velocity of reaction. |
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| Keywords: | ultrasonic treatment in situ synthesis TiAl3/7075 composites kinetics |
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