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Structural Research Series 172PDF


Title:Effect of Welding on the Axial Fatigue Properties of High Strength Structural Steels
Author(s):Sahgal, R.K.; Stallmeyer, J.E.; Munse, W.H.
Subject(s):Steel, Structural
Axial fatigue properties
Abstract:The effect of welding on the axial fatigue properties of a quenched and tempered steel in the life range between 100,000 and 2,000,000 cycles has been investigated on a zero-to-tension and partial tension-to-tension stress cycle. Included in the studies are the effect of surface geometry and the metallurgical changes imparted by the welding. The test results indicate that the introduction of a transverse butt weld in this steel decreases the fatigue strength corresponding to 2,000,000 cycles by approximately 40 percent. On a zero-to-tension stress cycle, no significant increase has been found in the fatigue strength of welds in the quenched and tempered steel over comparable welds in ASTH A-7 or A-242 steels. The quenched and tempered steel has also been found to be more notch sensitive in fatigue and highly susceptible to even the most minor internal discontinuities. The data indicate that the superiority of the quenched and tempered steel lies in its ability to resist high mean stresses and is thus eminently suited for applications where high dead to live lead ratios are encountered.
Issue Date:1963-03
Publisher:University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.
Series/Report:Civil Engineering Studies SRS-172
Genre:Technical Report
Sponsor:The Engineering Foundation
American Iron and Steel Institute
Chicago Bridge and Iron Foundation
The Welding Research Council
Date Available in IDEALS:2009-09-11

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