Simulation of Multipass Welding With Simultaneous Computation of Material Properties

Author:

Bo¨rjesson Lars1,Lindgren Lars-Erik1

Affiliation:

1. Division of Computer Aided Design, Lulea˚ University of Technology, 971 87 Lulea˚, Sweden

Abstract

Multipass butt welding of two 0.2 m thick steel plates has been investigated. The objective is to calculate residual stresses and compare them with measured residual stresses. The material properties depend on temperature and temperature history. This dependency is accounted for by computing the microstructure evolution and using this information for computing material properties. This is done by assigning temperature dependent material properties to each phase and applying mixture rules to predict macro material properties. Two different materials have been used for the microstructure calculation, one for the base material and one for the filler material.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference13 articles.

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2. Inoue T., and Wang Z. G., 1983, “High-Temperature Behavior of Steels with Phase Transformation and the Simulation of Quenching and Welding Processes,” Proc. of 4th Int. Conf. Mechanical Behavior of Materials, Stockholm, Sweden, Aug., pp. 1015–1021.

3. Bergheau J. M., and Leblond J. B., 1991, “Coupling Between Heat Flow, Metallurgy and Stress-Strain Computations in Steels: The Approach Developed in the Computer Code Sysweld for Welding and Quenching,” Proc. of the 5th Int. Conf. Modelling of Casting, Welding and Advanced Solidification Processes, The Minerals, Metals & Materials Society, pp. 203–210.

4. Oddy, A. S., McDill, J. M. J., and Karlsson, L., 1996, “Microstructural predictions including arbitrary thermal histories reaustenization, and carbon segregation effects,” Can. Metall. Q., 35, No 3, pp. 275–283.

5. Kirkaldy, J. S., and Venugopalan, D., 1983, “Prediction of Microstructure and Hardenability in Low Alloy Steels,” Proc. Int. Conf. on Phase Transformations in Ferrous Alloys, Marder A. R., and Goldstein, J. R., eds., Philadelphia, Oct. pp. 125–148.

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