轻合金挤压成形/成性一体化的研究进展  

Investigation Progress on Integration of Forming and Modification in Extrusion for Light Alloys

作　　者：王野[1] 李峰[1] 王宇 王雁鹏 WANG Ye;LI Feng;WANG Yu;WANG Yan-peng(School of Naterial Science and Engineering,Harbin University of Science and Technology,Harbin 150040,China)

机构地区：[1]哈尔滨理工大学材料科学与工程学院

出　　处：《哈尔滨理工大学学报》2019年第5期1-6,共6页Journal of Harbin University of Science and Technology

基　　金：国家自然科学基金(51675143)

摘　　要：为了充分发挥挤压工艺在高性能轻合金制备和成形两个层面上的技术特点与集成优势,轻合金挤压成形/成性一体化应运而生并逐渐成为本领域的研究热点问题之一。该类方法的技术特点在于通过对挤压模的优化设计、加载形式及坯料结构等的改变,将以往独立的细晶制备工序巧妙融入到挤压过程中,在单道次内即达到了对挤出制品“形/性”双控的实效。从研究概况的“缩影”可以看出,与常规挤压相比,在降低成形载荷、改善挤出流动均匀性、提高制品组织性能等诸多方面都体现出了其综合优势。随着相关基础科学问题的解决,藉此为高性能轻合金短流程控形及控性一体化技术的研究和应用提供科学指导。Extrusion processes can exert technical characteristics and integration advantages in preparing and forming lightweight high-performance magnesium alloys.The lightweight alloy extrusion integration consisting of forming and modification emerged as the times require,and has gradually become one of the hot topics in extrusion field.The technical characteristics of above processes are that the previous independent fine grain preparation processes is skillfully integrated into the extrusion processes through optimizing extrusion dies,changing loading modes and adjusting the structure of billets,etc.The actual effects of“shapes/properties”dual control of extrusion products have been achieved in a single pass.It can be seen from the microcosm of the research overviews that compared with the conventional extrusion,its comprehensive advantages are reflected in many aspects such as reducing forming load,improving the uniformity of extrusion flow,and improving the microstructure properties of the extruded products.To solve the related basic scientific problems,it provides scientific guidance for the research and application of lightweight high-performance alloy in short process and dual control of shape/performance.

关 键 词：轻合金 挤压 控形 控性 组织 

分 类 号：TG376[金属学及工艺—金属压力加工]