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深冷处理对TC6钛合金热导率和热膨胀系数的影响
Effects of Cryogenic Treatment on Thermal Conductivity and Thermal Expansion Coefficient of TC6 Titanium Alloy
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- DOI:
- 作者:
- 赵金柱
ZHAO Jinzhu
- 作者单位:
- 河北建材职业技术学院材料工程系
Department of Material Engineering,Hebei Vocational & Technical College of Building Materials,Qinhuangdao 066002, China
- 关键词:
- TC6钛合金 深冷处理 热导率 热膨胀系数
TC6 titanium alloy cryogenic treatment thermal conductivity thermal expansion coefficient
- 摘要:
- 对TC6钛合金进行深冷处理,通过对比深冷处理前后合金在25～600℃范围内的热导率和热膨胀系数的变化,探讨了深冷处理对TC6钛合金热导率和热膨胀系数的影响。结果表明:随着温度升高,经深冷处理合金的热导率先小于后大于未经深冷处理合金的热导率,而热膨胀系数则先略大于后小于未经深冷处理合金的热膨胀系数。600℃时,经深冷处理合金的热导率和热膨胀系数分别为7.95 W·m-1·K-1和1.17×10-5·℃-1,较相同温度下未经深冷处理的分别增大和减小了14.88%(1.03 W.m-1·K-1)和1.62%(0.19×10-6·℃-1)。
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.