坯料处理方式对纯钛挤压棒材组织及性能的影响  

Effect of Billets Treatement on Microstructure and Properties of Extruded Pure Titanium Rods

作　　者：刘守田 陈睿博 朱宝辉 蔡国帅 唐寿全 刘彦昌 

机构地区：[1]宁夏东方钽业股份有限公司,宁夏石嘴山753000

出　　处：《钛工业进展》2014年第4期36-38,共3页Titanium Industry Progress

摘　　要：采用正向挤压法分别对铸态及锻态纯钛坯料进行挤压对比试验,研究了经两种不同方式处理的坯料对挤压棒材组织及性能的影响。结果表明,铸态挤压坯料有粗大的柱状晶,金属协调变形性差,挤压后棒材表面质量较差且有连续的沟槽等缺陷;经过锻造的挤压坯料具有等轴组织,变形时金属流动更加均匀,挤压后的棒材表面光滑平整,力学性能优良。In this paper , pure titanium casting ingots and forged billets are extruded into rods .And the effects of billets treatement on the microstructure and properties of extruded products were studied .The results show that because of the bulky columnar grains in the casting ingots microstructure and poor coordination of the metal flow deformation during extruding , the surface quality of the extruded products are poor and there are folding grooves on the surface .How-ever, the forged billets has equiaxed grain and more uniform metal flow during extruding , and the extruded products has smooth surface and excellent mechanical properties .

关 键 词：纯钛 挤压棒材 显微组织 表面质量 

分 类 号：TG379[金属学及工艺—金属压力加工]