Deformation Stability of a Low-Cost Titanium Alloy Used for Petroleum Drilling Pipe

Abstract:

A new modified low-cost titanium alloy, Ti-Al-X, was designed for petroleum drilling applications. The alloy ingots were prepared by combination of vacuum consumable electrode arc melting, forging/hot rolling, homogenization, and solid-solution/aging treatments. The hot deformation behavior of Ti-Al-X alloy was investigated by a thermal simulation machine Gleeble 1500 at temperature range of 850~1000°C with the strain rate range of 0.001 s^-1~1s^-1. The deformation resistance significantly decreases with the increase of deformation temperature and the strain rate. The alloy exhibits flow instability under the deformation conditions of strain rates about 0.001 s^-1 and temperature above 1000°C, which should be avoided during hot working. In addition, the instability area enlarged in processing map with the increasing of true strain.

• Periodical: Materials Science Forum (Volume 944)
• Pages: 887-891
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.944.887
• Online since: January 2019
• Authors: Long Jiang, Chun Feng*, Hui Qun Liu, Le Wang, Li Hong Han, Yao Rong Feng, Fang Po Li, Cai Hong Lu, Li Juan Zhu, Hang Wang, Shang Yu Yang
• Keywords: Flow Stress, Hot Deformation, Processing Map, Titanium Alloy

References

[1] S.A. Holditch and R.R. Chianelli, Factors that will Influence Oil and Gas Supply in 21st Century, MRS Bull., 33 (2008) 317–323.

DOI: 10.1557/mrs2008.65

[2] R.Zeringue, HPHT Completion Challenges, SPE High Pressure/High Temperature Sour Well Design Applied Technology Workshop, May 17–19, 2005 (The Woodlands, TX), SPE 97589.

DOI: 10.2118/97561-pt

[3] R.W. Schutz and H.B. Watkins, Recent Developments in Titanium Alloy Application in the Energy Industry, Materials Science and Engineering A , 243 (1998) 305–315.

DOI: 10.1016/s0921-5093(97)00819-8

[4] R.W. Schutz, Performance of ruthenium-enhanced α-β Titanium alloys in aggressive sour gas and geothermal well produced fluid brines, Corrosion,1997, 32, NACE, Houston, TX, (1997).

[5] M. Ziomek-Moroz. Environmentally Assisted Cracking of Drill Pipes in Deep Drilling Oil and Natural Gas Wells, Journal of Materials Engineering and Performance, 21 (2012) 1061–1069.

DOI: 10.1007/s11665-011-9956-6

[6] X. H. Lü, Y. Shu, G.X. Zhao, Research and application progress of Titanium alloy petroleum pipe, Rare Metal Materials and Engineering, 43 (2014) 1518-1524.

[7] Z.H. Chen. Titanium and Titanium Alloys, Chemical Industry Press, Beijing, (2006).