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RESEARCH PAPERS

Strain Distributions in a Type 316/16-8-2 Stainless Steel Weldment During Cyclic Loading

[+] Author and Article Information
G. E. Korth, M. D. Harper

EG&G Idaho, Inc., Idaho Falls, Idaho 83415

J. Pressure Vessel Technol 108(1), 120-123 (Feb 01, 1986) (4 pages) doi:10.1115/1.3264745 History: Received July 17, 1984; Revised April 03, 1985; Online November 05, 2009

Abstract

Test specimens were cut from a 25-mm-thick Type 316 stainless steel plate butt welded with 16-8-2 filler wire. The specimens were oriented transverse to the weld seam and contained base metal, heat-affected zone (HAZ), and weld metal in the gage section. Strain-controlled cyclic loading at room temperature was imposed across the heterogeneous weldment while local strains at various points within the gage section were continuously monitored. Results show that strains at the local points can vary markedly from the average strain of the composite section. Strain concentrations occurred in the softer base metal which led to failure much sooner than the composite strain would indicate. However, when the maximum strain range from a local area was compared to baseline data, the life correlation was very good.

Copyright © 1986 by ASME
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