Effects of Cryogenic Treatment on Thermal Conductivity and Thermal Expansion Coefficient of TC6 Titanium Alloy
Author of the article:ZHAO Jinzhu
Author's Workplace：Department of Material Engineering,Hebei Vocational & Technical College of Building Materials,Qinhuangdao 066002, China
Key Words：TC6 titanium alloy cryogenic treatment thermal conductivity thermal expansion coefficient
Abstract：A cryogenic treatment test was carried on TC6 titanium alloy, the effects of cryogenic treatment on the thermal conductivity and thermal expansion coefficient of TC6 alloy under the temperature range of 25- 600 ℃ were investigated.The results show that the thermal conductivity of the cryogenic treated alloy is first less and then greater than that of the original alloy;however, thermal expansion coefficient of TC6 alloy is first slightly greater and then less than that of the original alloy with the increase of temperature. When the temperature is up to 600 ℃, thermal conductivity and thermal expansion coefficient of the cryogenic treated TC6 alloy are 7.95 W·m^-1·K^-1 and 1.17×10-5℃^-1, and increases and decreases by 14.88%(1.03 W·m^-1·K^-1) and 1.62%(0.19×10-6℃^-1) respectively than that of the original alloy at the same temperature.
