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HIGH-TENSILE-STRENGTH STEEL FOR WELDING SUPERIOR IN TOUGHNESS AT HEAT-AFFECTED ZONE IN SUPER HIGH-HEAT-INPUT WELD
HIGH-TENSILE-STRENGTH STEEL FOR WELDING SUPERIOR IN TOUGHNESS AT HEAT-AFFECTED ZONE IN SUPER HIGH-HEAT-INPUT WELD
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机译：超级热输入焊接区热影响区韧性高强焊接用高强钢
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摘要
PROBLEM TO BE SOLVED: To provide a high-tensile-strength steel for welding superior in toughness at a heat-affected zone in a super high-heat-input weld.;SOLUTION: The high-tensile-strength steel for welding comprises, by mass%, 0.04-0.2% C, 0.02-0.15% Si, 1.5-3.0% Mn, 0.02% or less P, 0.004-0.01% S, 0.2-2.0% Cu, 0.04-0.1% Ti, 0.004-0.03% Nb, 0.001-0.01% Mg, 0.004-0.008% N, less than 0.001% Al and the balance Fe with unavoidable impurities. The high-tensile-strength steel for welding includes sulfide particles containing one or more elements from among Mn, Cu, Nb and Mg having particle sizes of 3 nm to 3 μm in an amount of 2×107/mm3 to 1×109/mm3 in the steel, and is superior in the toughness at the heat-affected zone in the super high-heat-input weld.;COPYRIGHT: (C)2005,JPO&NCIPI
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机译：要解决的问题：提供一种在超高热输入焊缝的热影响区具有优异韧性的高强度焊接钢。解决方案：高强度焊接钢包括：质量％，0.04-0.2％C，0.02-0.15％Si，1.5-3.0％Mn，0.02％以下P，0.004-0.01％S，0.2-2.0％Cu，0.04-0.1％Ti，0.004-0.03％Nb ，0.001-0.01％的Mg，0.004-0.008％的N，少于0.001％的Al和余下的Fe带有不可避免的杂质。用于焊接的高强度钢包括硫化物颗粒，该硫化物颗粒包含Mn，Cu，Nb和Mg中的一种或多种元素，其粒径为3nm至3μm，其含量为2×10 7 / mm 3 到钢的1乘以10 9 / mm 3 ，并且在热影响区的韧性优异COPYRIGHT：（C）2005，JPO＆NCIPI
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