To provide a weld structure in which material strength of a softened heat-affected part in a weld part is recovered, and to provide a method for manufacturing the same.SOLUTION: A weld structure is constituted of a plurality of parts made of a steel material and weld-joined to one another. In the weld structure, Vickers hardness of a heat-affected part in a weld part is equivalent to Vickers hardness of steel materials (base metal) other than a region of the weld part within a range of 11% or more and 25% or less of a thickness from a surface of the steel material.SELECTED DRAWING: Figure 6
【課題】溶接部における軟化した熱影響部の材料強度を回復した溶接構造体、およびその製造方法を提供する。【解決手段】溶接構造体は、鋼材からなる複数の部品が溶接接合されている。溶接構造体において、溶接部における熱影響部のビッカース硬さが、鋼材の表面から厚みの11%以上、25%以下の範囲において、溶接部の領域以外の鋼材(母材)におけるビッカース硬さ相当である。【選択図】図6
WELD STRUCTURE AND METHOD FOR MANUFACTURING WELD STRUCTURE
溶接構造体、および溶接構造体の製造方法
2019-06-06
Patent
Electronic Resource
Japanese
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