Metastable Beta Titanium Spring Performance at Elevated Temperature
Date Published: 2002-11-05
Paper Number:2002-01-3004
DOI: 10.4271/2002-01-3004
Citation:
Rateick, R., McCool, K., Leonard, E., and Hoeffer, J., "Metastable Beta Titanium Spring Performance at Elevated Temperature," SAE Technical Paper 2002-01-3004, 2002, doi:10.4271/2002-01-3004.
Author(s):
Richard G. Rateick - Honeywell Engine Systems and Services
Kerri C. Mccool - Honeywell Engine Systems and Services
Eric C. Leonard - Formerly of Renton Coil Spring
Joseph H. Hoeffer - Metcut Research
Abstract:
The application of metastable beta titanium alloy Beta-C™ (Ti-3Al-8V-6Cr-4Mo-4Zr) in spring applications is increasing. A Ti-3Al-8V-6Cr-4Mo-4Zr, or more simply Ti-38-6-44, coil spring can be comparatively smaller than the steel mechanical equivalent on account of its high strength and lower shear modulus. This paper reviews the testing methods and results of load-life fatigue tests performed on helical compression springs at 177 °C with a stress ratio of R=0.456. All springs were compliance tested prior to fatigue testing as a means of measuring the shear modulus. To support spring behavior modeling, the shear modulus was also determined using a torsionally loaded strain gauged specimen tested at room temperature and 177 °C. The thermal expansion behavior was studied from room temperature to above 177 °C.
Purchase more technical papers and save! With TechSelect,
you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.
Learn more >
