颗粒增强铝基复合材料往复挤压的数值模拟与实验研究  

Numerical Simulation and Experimental Study on Cyclic Extrusion Compression for Particle Reinforced Al Composite

作　　者：宛琼[1,2] 李付国[1] 李艳锋 WAN Qiong;LI Fuguo;LI Yanfeng(School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China;School of Materials Science and Engineering,Henan University of Science and Technology,Luoyang 471003,China;Luoyang Ship Material Research Institute,Luoyang 471003,China)

机构地区：[1]西北工业大学材料科学与工程学院,陕西西安710072 [2]河南科技大学材料科学与工程学院,河南洛阳471003 [3]中国船舶集团有限公司第七二五研究所,河南洛阳471003

出　　处：《热加工工艺》2024年第23期135-140,共6页Hot Working Technology

基　　金：国家自然科学基金项目(51275414,51605387);陕西省重点研发计划项目(2020ZDLGY12-07)。

摘　　要：采用Deform软件对颗粒增强铝基复合材料的往复挤压过程进行数值模拟,将熵值法和逼近理想解排序法相结合对正交模拟方案进行评价。将优选出的工艺参数用于往复挤压试验。结果表明:核壳结构的钛铝金属间化合物增强颗粒在往复挤压的过程中未发生整体破碎和与基体脱离的现象,而且热压烧结时Ti Al_(3)壳体内部形成的粗大Ti晶在往复挤压后得到了有效细化。The cyclic extrusion compression(CEC)was simulated numerically by Deform software for particle reinforced aluminum composites.The orthogonal simulation tests were evaluated by the application of the entropy weight and technique for order preference by similarity to ideal solution.The preferred process was used in CEC experiment.The results show that the titanium aluminum intermetallic compound reinforced particles with the core and shell structure are not broken up nor separated from the matrix during CEC.The coarse Ti grains formed in hot-pressing sintering TiAl_(3) shell are refined effectively after CEC.

关 键 词：铝基复合材料 往复挤压 数值模拟 参数优选 

分 类 号：TG379[金属学及工艺—金属压力加工]