Strength and deformability of welded joints of 780 MPa grade steel plates
Seven hundred and eighty megapascal grade low C–Mn steel plates with two different chemical compositions were manufactured under various rolling conditions. Three types of welded joints, in which the strength of the weld metal was smaller than (under-matching), larger than (over-matching), or equal...
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| Veröffentlicht in: | Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2003-05, Vol.348 (1), p.22-28 |
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| container_title | Materials science & engineering. A, Structural materials : properties, microstructure and processing |
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| creator | Qiu, H Kawaguchi, Y |
| description | Seven hundred and eighty megapascal grade low C–Mn steel plates with two different chemical compositions were manufactured under various rolling conditions. Three types of welded joints, in which the strength of the weld metal was smaller than (under-matching), larger than (over-matching), or equal to (even-matching) that of the base metal, were fabricated from the developed steel plates. Investigation of the welded joints reveals that all of the joints softened in the heat-affected zone (HAZ) and the tensile specimens of the welded joints ruptured from the HAZs. However, by utilizing strength over-matching weld metal, welded joints can be produced with almost the same strength of the base metal. Furthermore, the deformability of the welded joints can be improved by lowering the yield ratio (yield strength/tensile strength) of the base metal. |
| doi_str_mv | 10.1016/S0921-5093(02)00746-3 |
| format | Article |
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Three types of welded joints, in which the strength of the weld metal was smaller than (under-matching), larger than (over-matching), or equal to (even-matching) that of the base metal, were fabricated from the developed steel plates. Investigation of the welded joints reveals that all of the joints softened in the heat-affected zone (HAZ) and the tensile specimens of the welded joints ruptured from the HAZs. However, by utilizing strength over-matching weld metal, welded joints can be produced with almost the same strength of the base metal. Furthermore, the deformability of the welded joints can be improved by lowering the yield ratio (yield strength/tensile strength) of the base metal.</description><identifier>ISSN: 0921-5093</identifier><identifier>EISSN: 1873-4936</identifier><identifier>DOI: 10.1016/S0921-5093(02)00746-3</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Applied sciences ; Deformation ; Elasticity. 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A, Structural materials : properties, microstructure and processing</title><description>Seven hundred and eighty megapascal grade low C–Mn steel plates with two different chemical compositions were manufactured under various rolling conditions. Three types of welded joints, in which the strength of the weld metal was smaller than (under-matching), larger than (over-matching), or equal to (even-matching) that of the base metal, were fabricated from the developed steel plates. Investigation of the welded joints reveals that all of the joints softened in the heat-affected zone (HAZ) and the tensile specimens of the welded joints ruptured from the HAZs. However, by utilizing strength over-matching weld metal, welded joints can be produced with almost the same strength of the base metal. Furthermore, the deformability of the welded joints can be improved by lowering the yield ratio (yield strength/tensile strength) of the base metal.</description><subject>Applied sciences</subject><subject>Deformation</subject><subject>Elasticity. Plasticity</subject><subject>Exact sciences and technology</subject><subject>Low carbon-manganese steel</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>Metals. 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Plasticity</topic><topic>Exact sciences and technology</topic><topic>Low carbon-manganese steel</topic><topic>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</topic><topic>Metals. Metallurgy</topic><topic>Strength</topic><topic>Welded joint</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Qiu, H</creatorcontrib><creatorcontrib>Kawaguchi, Y</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials science & engineering. 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Three types of welded joints, in which the strength of the weld metal was smaller than (under-matching), larger than (over-matching), or equal to (even-matching) that of the base metal, were fabricated from the developed steel plates. Investigation of the welded joints reveals that all of the joints softened in the heat-affected zone (HAZ) and the tensile specimens of the welded joints ruptured from the HAZs. However, by utilizing strength over-matching weld metal, welded joints can be produced with almost the same strength of the base metal. Furthermore, the deformability of the welded joints can be improved by lowering the yield ratio (yield strength/tensile strength) of the base metal.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/S0921-5093(02)00746-3</doi><tpages>7</tpages></addata></record> |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Deformation Elasticity. Plasticity Exact sciences and technology Low carbon-manganese steel Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Strength Welded joint |
| title | Strength and deformability of welded joints of 780 MPa grade steel plates |
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