Features of residual stresses in duplex stainless steel butt welds

[摘要] Duplex stainless steel finds increasing use as an alternative to austenitic stainless steel, particularly where chloride or sulphide stress corrosion cracking is of primary concern, due to the excellent combination of strength and corrosion resistance. During welding, duplex stainless steel does not create the same magnitude or distribution of weld-induced residual stresses as those in welded austenitic stainless steel due to the different physical and mechanical properties between them. In this work, an experimental study on the residual stresses in butt-welded duplex stainless steel is performed utilizing the layering technique to investigate the characteristics of residual stresses in the weldment. Three-dimensional thermos-mechanical-metallurgical finite element analysis is also performed to confirm the residual stress measurements.

[发布机构] Department of Civil Engineering, Chung-Ang University, Huksuk-ro, 84, Dongjak-ku, Seoul; 06974, Korea, Republic of^1;Graduate School of Construction Engineering, Chung-Ang University, Huksuk-ro, 84, Dongjak-ku, Seoul; 06974, Korea, Republic of^2;Department of Civil and Environmental and Plant Engineering, Chung-Ang University, Huksuk-ro, 84, Dongjak-ku, Seoul; 06974, Korea, Republic of^3;Faculty of Civil Engineering, Ton Duc Thang University, Ho Chi Minh City, Viet Nam^4

[效力级别] 运输工程

[关键词] Duplex stainless steel;Layering techniques;Physical and mechanical properties;Weld-induced;Weldments