(西安赛特思迈钛业有限公司，西安 710021)
摘 要: 利用250型横列式轧机对边长为55~60 mm的TA2纯钛方坯采用控温轧制方式轧制成d16 mm的棒材。结果表明：控温轧制工艺，可以有效细化晶粒，平均晶粒尺寸可以细化至2~3 μm；材料抗拉强度由快速轧制时的431 MPa提高到510 MPa，升高18.3%，同时保持较好延展性。另外，通过对轧制过程的温度控制，纯钛棒材的横向、纵向组织趋于一致化。
关键字: 纯钛；控温轧制；显微组织；细晶强化
（Xi’an Saite Simai Titanium Industry Co., Ltd., Xi’an 710021, China）
Abstract:The type 250 open-train mill, by controlled rolling on the specifications for each 55 mm TA2 pure titanium billet rolled into d18 mm bar. The results show that the temperature control rolling technology can effectively refine the grain size, the average grain size can be refined to 2~3 μm. The tensile strength of material from rapid rolling is improved from 431 MPa to 510 MPa, while maintaining good ductility increases by 18.3%. In addition, through controlling the temperature of the rolling process, the transverse and longitudinal structure of pure titanium bars trends to the line.
Key words: pure titanium; temperature controlled rolling; microstructure; fine grain strengthening
