Abstract
Metastable beta titanium alloys are usually given a conventional solution treating and aging heat treatment to achieve high strength. This has been the case for the alloy Ti-8Mo-8V-2Fe-3Al. The present paper examines an alternate heat treatment for Ti-8823, that of direct aging after fabrication. Material for this study was fabricated by extrusion processes that provide reduction of a) 30%; and b) 83–84% during hot working for which two different heat treatments are considered: a conventional solution treatment and age, and a direct age. The extrusion temperature was also varied for the material that had undergone the larger amount of reduction. Static tension, torsion, and fracture toughness properties are determined for various through-the-thickness locations. Also reported are crack growth data and uniaxial S-N fatigue curves obtained from tests run at an R ratio of 0.1. The information from these tests enables a comparison between the solution treated and aged, and the direct aged conditions for the larger amount of reduction. Except for the crack growth behavior these data are compared to that obtained from material that has received 30% reduction during hot working.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Wood, R. A., MCIC Report 72–11, Battelle-Columbus Laboratories, Columbus, OH, September 1972.
Broadwell, R. G., Coyne, J. E., “The Fracture Toughness-Tensile Property Relationships of Deep Hardenable Titanium Alloys,” AIME Spring Meeting, Las Vegas, NV, May 1970.
Chait, R., DeSisto, T. S., “The Fracture Toughness of Three Heavy Section Titanium Alloys,” AMMRC PTR 72–5, Army Materials and Mechanics Research Center, Watertown, MA, October 1972.
ASTM Standard E-399, ASTM Philadelphia, PA 1975, Part 10, 561.
Bohanek, E., “Evaluation of Several Commercial Heats of Ti-8Mo8V–2Fe-3A1,” Technical Report No. 45, Titanium Corporation of America, Toronto, OH, August 1970.
Chait, R., Metallurgical Transactions 1975, Vol. 6A, 2301.
Adair, A. M., Roberson, J. A., Proc. Second Int. Conf. on Strength of Metals and Alloys, A.erican Society for Metals, Metals Park, OH, Vol. 1970, 3, 932.
Lucas, J. J., Konieczny, P. P. Metallurgical Transactions, 1971, Vol. 2, 911.
Acquaviva, S. J., Chait, R., “Monitoring Fatigue Failure of a High Strength Titanium Alloy by Acoustic Emission Techniques,” AMMRC PTR 75–2, Army Materials and Mechanics Research Center, Watertown, MA, June 1975.
Author information
Authors and Affiliations
Editor information
Rights and permissions
Copyright information
© 1982 Springer Science+Business Media New York
About this chapter
Cite this chapter
Chait, R., DeSisto, T.S. (1982). An Evaluation of Direct Aging to Achieve Optimum Mechanical Properties for the Metastable Beta Ti-8Mo-8V-2Fe-3Al Alloy. In: Williams, J.C., Belov, A.F. (eds) Titanium and Titanium Alloys. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-1758-7_9
Download citation
DOI: https://doi.org/10.1007/978-1-4757-1758-7_9
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4757-1760-0
Online ISBN: 978-1-4757-1758-7
eBook Packages: Springer Book Archive