Residual stresses in welded joints of high-strength steels |
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| Authors: | L. Lobanov V. Poznyakov V. Pivtorak O. Mikhodui V. Orlovs’kyi |
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| Affiliation: | (1) School of Materials, University of Manchester, Manchester, M1 7HS, UK;(2) Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB2 3QZ, UK; |
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| Abstract: | By using a “GLEEBLE-3800” complex, we perform the experimental investigations of the dynamics of changes in the yield strength of the metal of the heat-affected zone (HAZ) in low-carbon high-strength steels for various rates of cooling of the welded joints. The influence of the rate of energy input and thermal welding cycles on the formation of residual stresses in welded joints of steels with different chemical compositions and properties is determined both experimentally and numerically. The relationship between the residual stresses, modes of heat input, and the period of holding of the HAZ metal at temperatures above the point AC3 is established. |
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