(宝鸡钛业股份有限公司，宝鸡 723014)
摘 要: 研究辊模拉伸TC4钛合金丝材的组织和性能，并与传统拉伸工艺相比较。结果表明：由于二者拉伸过程中丝材所受的摩擦力大小及摩擦力形式不同，使得经过辊模拉伸生产的丝材表面光亮，内部组织更加均匀、细小；而传统工艺生产的丝材表面易出现划伤、粘模等加工缺陷，其内部的晶粒较大。将两种不同拉伸工艺生产出的产品经过再结晶退火后处理，发现辊模拉伸生产出的丝材具有强度高、塑形好等优点，其力学性能远远高于采用传统工艺生产的同规格丝材。
关键字: TC4钛合金；辊模拉丝；力学性能；组织
produced by roll-die drawing
（Baoji Titanium Industry Co., Ltd., Baoji 723014, China）
Abstract:The relationship between the mechanical properties and microstructures of Ti6Al4V alloy wire manufactured by roll-die drawing was discussed, and the difference between the traditional process and the new manufacturing method was compared. The results show that, because of the differences of frictional forms under two production ways, the wire manufactured by cold roll-die drawing has brighter surface and the microstructure is also finer. The wire produced by new method doesn’t have drawing imperfections, such as pitting, scratching, showing much higher mechanical properties after annealing.
Key words: TC4 titanium alloy; roll-die drawing; mechanical property; microstructure
