摘要
研究了热处理工艺对Ti80合金棒材显微组织和性能的影响。研究结果表明:同一规格Ti80合金棒材,在800℃～900℃退火时,随着温度的升高,抗拉强度逐渐降低,屈服强度逐渐升高;但在800℃～850℃塑性指标变化不明显,当温度升至900℃时,断面收缩率、延伸率和冲击值均明显升高;最终确定在825℃保温1h～2h空冷热处理制度,可以获得最佳力学性能。
The effect of heat treatment process on the structure and properties of Ti80 alloy bars was researched in this paper, the results are following： to the same specification Ti80 alloy bars, with the increase of the temperature, the tensile strength gradually decreases and the yield strength gradually increases when annealing in 800 ℃ - 900 ℃, but the plasticity indexes do not change significantly in 800 ℃ -850 ℃ ; when the temperature is above 900℃, the shrinkage rate, elongation and impact value all increase significantly. Finally, the proper heat treatment process is determined, heating up the titanium alloy bars to 825 ℃, holding 1 ha 2 h, air-cooling, to get the best mechanical properties.
出处
《机械工程与自动化》
2013年第2期107-108,111,共3页
Mechanical Engineering & Automation
关键词
Ti80合金
热处理
显微组织
性能
Ti80 alloy； heat treatment； microstructure； properties
