Susceptibility to Underclad Cracking in Relation to Chemical Composition

[+] Author and Article Information
R. Kume, H. Okabayashi

Welding Research Institute, Ishikawajima-Harima Heavy Industries Co., Ltd., Isogo-ku, Yokohama, Japan

M. Amano

Nuclear Component Works, Ishikawajima-Harima Heavy Industries Co., Ltd., Isogo-ku, Yokohama, Japan

J. Eng. Mater. Technol 98(4), 342-347 (Oct 01, 1976) (6 pages) doi:10.1115/1.3443387 History: Received June 10, 1975; Revised November 17, 1975; Online August 17, 2010


Heat-affected zone cracking under the weld-overlay-cladding has been investigated for the combination of 22 kinds of ferritic base metals and electrodes including strip electrodes of austenitic and ferritic stainless steels, Inconel and mild steel, and covered electrodes of austenitic and ferritic stainless steels and Inconel. The results indicate that (1) intercrystalline cracks form on stress relieving under the overlap area of the cladding beads, (2) the susceptibility to cracking depends markedly on the chemical composition of the base metal, and the following equation predicts cracking tendency, ΔG = [Cr] + 3.3 [Mo] + 8.1 [V] − 2, and (3) cracking is avoided or decreased by using cladding material which is similar in thermal expansion coefficient to base metal.

Copyright © 1976 by ASME
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