2015-08-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/688125摘要：本計畫之研究目的在於建立次世代超高強度海洋用鋼材(S690Q)之相關性質、製程及應用技術，包含：關鍵冶金及熱處理性質、製程水淬變形及相變殘餘熱應力模擬、氫致破壞、潛弧銲接製程及銲道應力腐蝕等重點。研究中配合使用SYSWELD熱處理、氫陷阱結構控制與設計、銲接模擬分析軟體及JMatPro鐵基合金資料庫，建立熱處理、銲道顯微組織演化、變形及殘餘熱應力模擬之技術，應用於相關製程之優化，並提供S690Q鋼材之完整解決方案。研究成果可直接提供大型離岸風機等相關產業使用，這對於中鋼建立技術自主及未來推廣應用，均有極大的優勢。<br> Abstract: The purpose of this investigation is focused on developing related property, processing and application of next generation high-strength offshore steel, S690Q. It includes crucial properties of metallurgical and heat treatment, water quench deformation and transformation induced residual thermal stress simulation, hydrogen-induced fracture, submerge arc welding, and stress corrosion of weldment. Simulations of heat treatment, microstructural evolution of weldment, deformation and residual thermal stress are performed with aid of SYSWELD heat treating, design and control of hydrogen trap sites, and welding software as well as Fe-based database of JMatPrto program. Above results are applied to optimize related processes, and provide a total solution of S690Q steel for large-scale offshore wind turbine application. It is a great advantage for China Steel to build technical autonomy and future promotion application.海洋用鋼淬火回火氫致破裂潛弧銲接offshore steelquenchingtemperinghydrogen-induced fracturesubmerge arc welding