摘要
通过光学显微镜、扫描电镜、拉伸试验机、冲击试验机等手段研究了不同热处理工艺对钛合金油管组织和性能的影响。结果表明:固溶温度对钛合金油管的晶粒形态和各相占比产生较大的影响。在α+β两相区固溶处理,随着固溶温度的升高,α相的占比下降;在850℃固溶1 h水冷+550℃时效2 h空冷热处理工艺下获得了双态组织,可实现钛合金油管的高强韧性匹配,综合性能优异,满足SY/T 6896.3标准对110ksi钢级钛合金油管的要求。
The effect of heat treatment process on the microstructure and properties of titanium alloy oil well tubes was studied by means of optical microscope, scanning electron microscope, tensile testing machine and impact testing machine. The results show that the solid solution temperature has a great influence on the grain morphology and phase proportion of titanium alloy tubing. In the α+β two-phase region, the proportion of α phase decreases with increase of the solution temperature. Bimodal structure of titanium alloy can be obtained at 850 ℃ of solid solution for 1 h followed by water cooling and 550 ℃aging for 2 h followed by air cooling, which can realize the matching of high strength and toughness of titanium alloy oil well tubes. And it has excellent comprehensive properties, meeting the requirements of SY/T 6896.3 standard for 110 ksi steel grade titanium alloy oil well tubes.
作者
李周波
赵勇
高盟召
黄晓江
苑清英
Li Zhoubo;Zhao Yong;Gao Mengzhao;Huang Xiaojiang;Yuan Qingying(Chinese National Engineering Research Center for Petroleum and Natural Gas Tubular Goods,Baoji 721008,Shanxi,China;Baoji Petroleum Steel Pipe Co.,Ltd.,Baoji 721008,Shanxi,China)
出处
《钢铁钒钛》
CAS
北大核心
2021年第1期50-54,共5页
Iron Steel Vanadium Titanium
基金
中国石油天然气集团有限公司重大科技专项(2019B-4013)。
关键词
钛合金油管
热处理
固溶温度
微观组织
力学性能
titanium alloy tubing
heat treatment
solid solution temperature
microstructure
mechanical properties
