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Effect of Heat Treatment Process on Tribological Behavior of Ti-6Al-4V Alloy

Sabry S Youssef1, Khaled M Ibrahim2, and Mohammad Abdel-Karim1
1.Industrial Engineering Department, Faculty of Engineering, Fayoum University, Fayoum, Egypt
2.Manufacturing Technology Department, Central Metalluregical R&D Institute, Helwan, Egypt

Abstract—Titanium alloys are extensively used in various fields of engineering, medicine, aerospace and marine due to their excellent mechanical properties. Their usages are more pronounced today in the field of biomedical implants due to its superior bio-compatibility, corrosive resistance and high strength to weight ratio. Ti-6Al-4V alloy is high strength material that can be used in aerospace applications. Ti-6Al-4V has been found to have a better combination of high strength (UTS >1500 MPa) and good ductility (total elongation >10%) than many other α+β Ti-alloys. It has been reported that the natural oxide film that forms on titanium and its alloys easily rub off, thus leaving the substrate in a state of high friction and low wear resistance. Thus, it was important to enhance the tribological properties of Ti-6Al-4V alloy through controlling the microstructure with no loss in mechanical properties by applying solution treatment at different temperatures above and below the beta transus. In this paper, therfore, the influence of the solution treatment at 1050 °C for 30 min with water cooling followed by aging treatment at 500 °C for 24 hr and then air cooled was investigated on the specimens from Ti-6Al-4V titanium alloy.

Index Terms—Titanium alloys, Ti-6Al-4V, heat treatment, Solution treatment, Aging treatment

Cite: Sabry S Youssef, Khaled M Ibrahim, and Mohammad Abdel-Karim, "Effect of Heat Treatment Process on Tribological Behavior of Ti-6Al-4V Alloy," International Journal of Mechanical Engineering and Robotics Research, Vol. 2, No. 4, pp. 385-394, October 2013.