Effect of Welding on the Axial Fatigue Properties of High Strength Structural Steels

Sahgal, R.K.; Stallmeyer, J.E.; Munse, W.H.

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https://hdl.handle.net/2142/13727 Copy

Description

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.

Issue Date

1963-03

Keyword(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.

Publisher

University of Illinois Engineering Experiment Station. College of Engineering. University of Illinois at Urbana-Champaign.

Series/Report Name or Number

Civil Engineering Studies SRS-172

Type of Resource

text

Language

en

Permalink

http://hdl.handle.net/2142/13727

Sponsor(s)/Grant Number(s)

• The Engineering Foundation
• American Iron and Steel Institute
• Chicago Bridge and Iron Foundation
• The Welding Research Council

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