Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 2003.11a
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- Pages.103-105
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- 2003
Effects of Cutting and Welding on Hardness Values of Duplex and Superduplex Stainless Steel Weldments
절삭과 용접에 의한 Duplex계 스테인레스강 용접부의 경도 영향 평가
Abstract
Currently, duplex and superduplex stainless steels are widely used for piping system in offshore unit because of its excellent combination of strength and corrosion resistance properties. Also, the usage of duplex and superduplex stainless steel is steadily increasing with getting into step with development of offshore industries. In spite of excellent merits in mechanical and chemical properties of base materials, sometimes stringent requirements in welding procedure qualification and fabrication of duplex class material have regulated not only the application of various high-efficiency welding processes but also applicable welding parameters. This study is focused on hardness requirement which is known as one of the most stringent factor in duplex class material welding and this study aims to evaluate the effects of cutting and welding methodology on hardness values of duplex and superduplex stainless steel weldments.
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