Microstructure development in high-strength low-alloy steel welds |
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Authors: | Toshihiko KOSEKI |
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Affiliation: | Toshihiko KOSEKI Department of Materials Engineering,University of Tokyo,Tokyo 113 -8656,Japan |
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Abstract: | The reliability of steel welds becomes more critical issue with increasing steel strength,because brittle phases are more likely to form in the weld metals and heat-affected zone(HAZ) and thereby the toughness and ductility of the welds are degraded.Therefore,refinement of microstructure and minimization of the brittle phases are necessary to improve the reliability of the high-strength steel welds.In this presentation,microstructure formation that controls the toughness of weld metals and HAZ in high-stren... |
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Keywords: | high-strength steel weld HAZ toughness acicular ferrite MA constituent |
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