Effect of heat treatment parameters on surface contamination layer of Ti80 titanium alloy plate

doi:10.13251/j.issn.0254-6051.2025.02.032

Abstract

Abstract: Effects of heat treatment temperature and holding time on surface contamination layer of the Ti80 titanium alloy plate under atmospheric conditions and with/without surface anti-oxidation coating were studied by using metallographic method. The results show that when without surface anti-oxidation coating, as the heat treatment temperature increases and the insulation time prolongs, the thickness of the surface contamination layer on the Ti80 alloy plate continues to increase. When heat treated at 800-900 ℃, the surface contamination layer is relatively thin and easy to remove. However, when heat treated at 965-990 ℃, the removal of the surface contamination layer is difficult. When with surface anti-oxidation coating, the coating composition and coating thickness have a significant impact on the thickness of surface contamination layer on the Ti80 alloy plate. Choosing the appropriate type of coating and ensuring a certain coating thickness can significantly reduce the thickness of surface contamination layer on the Ti80 alloy plate after high temperature heat treatment, but it can not completely eliminate the surface contamination layer.

Key words: Ti80 titanium alloy, plate, heat treatment, anti-oxidation coating, surface contamination layer

CLC Number:

TG146.2⁺3

Zhang Qiang, Liu Feng, Hao Xiaobo, Wang Fei, Yu Dongdong, Liu Xibo, Li Bobo. Effect of heat treatment parameters on surface contamination layer of Ti80 titanium alloy plate[J]. Heat Treatment of Metals, 2025, 50(2): 206-211.

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