Thermomechanical Behavior of Ti-6Al-4V Alloy

作     者：K.Farmanesh A.Najafi-Zadeh 

作者机构：Dept.of Materials EngineeringIsfahan University of TechnologyIsfahan 85154IranDept.of Materials EngineeringIsfahan University of TechnologyIsfahan 85154Iran 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2003年第19卷第3期

页      面：217-220页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：support from the Ministry of Science  Research and Technology of Iran 

主　　题：Titanium alloy Hot pressing Ti-6A1-4V Dilatometry 

摘      要：Ti-6AI-4V, among the Ti alloys, is the most widely used. In the present work, the behavior of Ti-6AI-4V alloy has been investigated by the uniaxial hot isothermal compression tests and a series of dilatometric experiments were also carried out to determine the transformation temperatures at different cooling rates. Specimens for hot compression tests were homogenized at 1050℃ for 10 min and then quickly cooled to different straining temperatures from 1050 to 850℃. Cooling rates were chosen fast enough to prevent high temperature transformation during cooling. Compression tests were conducted at temperatures from 1050 to 850℃ in steps of 50℃ at constant true strain rates of 10-3 or 10-2 s-1. The apparent activation energy for compression in two-phase region was calculated 420 kJ·mol-1. Partial globularization of a phase was observed in the specimen deformed at low strain rates and at temperatures near the transformation zone and annealed after deformation.