等通道转角挤压处理镁合金摩擦特性及技术应用研究

项目名称： 等通道转角挤压处理镁合金摩擦特性及技术应用研究

项目编号： No.51205410

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 高雷雷

作者单位： 中国石油大学（华东）

项目金额： 25万元

中文摘要： 本项目采用等通道转角挤压工艺处理镁合金，进行等通道转角挤压处理镁合金摩擦学特性及等通道转角挤压技术工程应用研究。采用数值模拟和试验相结合的方法，深入研究等通道转角挤压模具结构及工艺参数的变化对镁合金微观组织、力学性能及摩擦学特性的影响规律，探讨等通道转角挤压处理后镁合金的磨损机理，明确等通道转角挤压处理后镁合金摩擦学特性与组织及力学性能的变化关系，阐明等通道转角挤压工艺对镁合金摩擦学性能影响的作用机制。在此基础上，开展大尺寸镁合金试样的制备及等通道转角挤压技术工程应用研究。本项目的开展，有望获得具有较高摩擦学性能的镁合金，有助于扩大镁合金的实际应用范围，等通道转角挤压技术的应用研究可为制备高性能其它合金材料提供一条新的途径。该研究对丰富摩擦学理论及等通道转角挤压技术的推广应用具有理论支撑和工程意义。

中文关键词： 等通道转角挤压；AZ31镁合金；摩擦；磨损；工程应用

英文摘要： In this study, the equal channel angular extrusion (ECAE) technique will be used to on Mg alloy, and the trioboligical properties of Mg alloy produced by ECAE will be analyzed. The effects of die angle and technological parameter on microstructure, mechanical and tribological properties of Mg alloy will be researched according to finite element analysis and experiment. The wear mechanism of Mg alloy after ECAE and the relationship between the triboligical properties and mechanical properties will be discussed. The purpose of this research is to illustrate the influence mechanism of ECAE technique on Mg alloy. In addition, the engineering application of ECAE technique will also be discussed. On the basis of this research, the Mg alloy with high mechanical and tribological properties can be obtained, which is useful to extend the engineering application field of Mg alloy. The research of engineering application of ECAE will provide a new technique for producing alloys with high mechanical properties. Therefore, this study has very important theory and engineering significance for the tribology development and the extension of ECAE technique.

英文关键词： ECAE；AZ31 magnesium alloy；friction；wear；engineering application