固溶时效处理对钻杆用Ti-6Al-4V-1Mo-1Zr 合金组织及性能的影响

doi:10.7623/syxb202405008

石油学报 ›› 2024, Vol. 45 ›› Issue (5): 866-874.DOI: 10.7623/syxb202405008

固溶时效处理对钻杆用Ti-6Al-4V-1Mo-1Zr 合金组织及性能的影响

冯春^1,2, 张凯¹, 张芳芳¹, 朱丽娟¹, 马栋¹, 刘洪涛³, 李双贵⁴

1. 中国石油集团工程材料研究院有限公司油气钻采输送装备全国重点实验室陕西西安 710077;
2. 中国石油集团渤海石油装备制造有限公司天津 300457;
3. 中国石油塔里木油田公司新疆库尔勒 841000;
4. 中国石油化工股份有限公司西北油田分公司新疆乌鲁木齐 830011

收稿日期:2022-12-07 修回日期:2024-03-14 发布日期:2024-06-03
通讯作者: 朱丽娟，女，1986年1月生，2013年获中国科学院金属研究所博士学位，现为中国石油集团工程材料研究院有限公司正高级工程师，主要从事石油管材及装备材料研发与应用技术研究工作。Email:zhulijuan1986@cnpc.com.cn
作者简介:冯春，男，1980年12月生，2010年获清华大学博士学位，现为中国石油集团工程材料研究院有限公司教授级高级工程师，主要从事油气井管材失效分析与智能仿真工作。Email:fengchun003@cnpc.com.cn
基金资助:
国家重点研发计划项目(2021YFB3700803)和中国石油天然气集团有限公司科技项目(2023ZZ11,2022DQ03-02)资助。

Effect of solution aging heat treatment on microstructure and properties of Ti-6Al-4V-1Mo-1Zr alloy for drill pipe

Feng Chun^1,2, Zhang Kai¹, Zhang Fangfang¹, Zhu Lijuan¹, Ma Dong¹, Liu Hongtao³, Li Shuanggui⁴

1. CNPC Tubular Goods Research Institute; State Key Laboratory for Performance and Structure Safety of Petroleum Tubular Goods and Equipment Materials, Shaanxi Xi’an 710077, China;
2. CNPC Bohai Equipment Manufacturing Co., Ltd., Tianjin 300457, China;
3. PetroChina Tarim Oilfield Company, Xinjiang Korla 841000, China;
4. Sinopec Northwest Oilfield Company, Xinjiang Urumqi 830011, China

Received:2022-12-07 Revised:2024-03-14 Published:2024-06-03

摘要/Abstract

摘要： 采用力学性能测试、组织观察等方法研究了固溶时效热处理工艺对钻杆用Ti-6Al-4V-1Mo-1Zr合金显微组织和力学性能的影响。研究结果表明,两相区固溶时效后实验材料得到双态组织,初生α相体积分数随固溶温度升高而减少,β转变组织及次生α相尺寸和体积分数随固溶温度升高而增加;相变点以上固溶时效后实验材料得到片层组织,使断裂过程中裂纹路径发生偏转,提高了裂纹的扩展路径,增大了冲击过程中钛合金可吸收的能量,提高了钛合金的冲击韧性;两阶段固溶时效热处理后的钛合金屈服强度达932 MPa以上、伸长率为14.1 % 、冲击功大于45 J,具备良好的强韧性匹配。

关键词: 石油钻杆, Ti-6Al-4V-1Mo-1Zr钛合金, 固溶时效, 显微组织, 力学性能, 冲击功

Abstract: The impact of solution and aging heat treatment process on the microstructure and mechanical properties of Ti-6Al-4V-1Mo-1Zr alloy for drill pipes were studied by mechanical property test and microstructure observation. The results show that after solution aging in two-phase region, the experimental materials with duplex microstructure can be obtained; the volume fraction of primary α phase is decreased with increasing solution temperature, while the size and volume fraction of the β transition structure and secondary α phase is increased with increasing solution temperature. After solution aging above the phase transformation temperature, the experimental materials with lamellar microstructure can be obtained, as result of which the crack path is deflected during the fracture process. This has improved the crack propagation path, increased the energy absorbed by titanium alloy in the impact process, and enhanced the impact toughness of titanium alloy. The titanium alloy after TSSA treatment has the yield strength over 932 MPa, the elongation of 14.1 %, and the impact energy greater than 45 J, demonstrating ideal strength and toughness matching properties.

Key words: oil drill pipe, Ti-6Al-4V-1Mo-1Zr titanium alloy, solution aging, microstructure, mechanical properties, impact energy

中图分类号:

TE921

冯春, 张凯, 张芳芳, 朱丽娟, 马栋, 刘洪涛, 李双贵. 固溶时效处理对钻杆用Ti-6Al-4V-1Mo-1Zr 合金组织及性能的影响[J]. 石油学报, 2024, 45(5): 866-874.

Feng Chun, Zhang Kai, Zhang Fangfang, Zhu Lijuan, Ma Dong, Liu Hongtao, Li Shuanggui. Effect of solution aging heat treatment on microstructure and properties of Ti-6Al-4V-1Mo-1Zr alloy for drill pipe[J]. Acta Petrolei Sinica, 2024, 45(5): 866-874.

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固溶时效处理对钻杆用Ti-6Al-4V-1Mo-1Zr 合金组织及性能的影响

Effect of solution aging heat treatment on microstructure and properties of Ti-6Al-4V-1Mo-1Zr alloy for drill pipe

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