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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/23657

Title: The effect of short time post-weld heat treatment on the fatigue crack growth of 2205 duplex stainless steel welds
Authors: M.C. Young;L.W. Tsay;C.-S. Shin;S.L.I. Chan
Contributors: NTOU:Institute of Materials Engineering
Keywords: Duplex stainless steel;Laser welding;Fatigue crack growth rate;Charpy impact;Post-heattreatment
Date: 2007-12
Issue Date: 2011-10-20T08:07:01Z
Publisher: International Journal of Fatigue
Abstract: Abstract:The influence of γ content and its morphology on the impact and fatigue crack growth behavior of 2205 duplex stainless steel (DSS) welds were studied in this work. Shorttimepost-heating was able to effectively raise the γ content and the impact toughness of the weld. The variation in microstructures showed less influence on the fatigue crack growth rate (FCGR) of the steel plate and weld except in the low ΔK regime. In contrast, residual welding stresses played a more significant affection on the FCGR of the DSS weld than microstructural factors did. Plastic deformation induced martensitic transformation within a definitely thin layer was responsible for the difference in crack growth behavior between specimens in the low ΔK range. Coarse columnar structure was more likely to have tortuous crack path in comparison with the steel plate.
Relation: 29(12), pp.2155-2162
URI: http://ntour.ntou.edu.tw/handle/987654321/23657
Appears in Collections:[材料工程研究所] 期刊論文

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