A New Perspective on the Influence of Thickness and Post-Weld Heat Treatment for Large Scale Welded Joints

[+] Author and Article Information
P. Hancock, J. P. Chubb, J. Spurrier

School of Industrial & Manufacturing Science, Cranfield University, Cranfield, Bedford MK43 0AL, U.K.

J. Eng. Mater. Technol 117(2), 209-214 (Apr 01, 1995) (6 pages) doi:10.1115/1.2804531 History: Received October 19, 1993; Revised June 19, 1994; Online November 27, 2007


CTOD, Charpy, and wide plate results from welded constructional steels are collected from nine companies. The resulting large data bank is analyzed statistically to identify general trends in properties of welded constructional steels. The present paper uses the data bank to review the effect of post-weld heat treatment (PWHT) on the fracture behavior of the weldments. Analysis shows the beneficial effect of PWHT at all thicknesses. The results are subsequently used to question the normal practice of post-weld heat treating weldments of 50 mm and above in thickness while leaving weldments of below 50 mm thick in the as welded condition. It is suggested that there is no significant difference in as welded fracture properties in weldments until thicknesses are well in excess of 100 mm.

Copyright © 1995 by The American Society of Mechanical Engineers
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