چکیده مقاله
In this study, the effect of GTAW process input heat on the microstructure of fracture toughness of API 5L X90 micro alloy steel fittings using ER120S G filler metal in three different inlet temperatures of 1 506, 1 674 and 1 841 kJ Was examined in mm Optical microscope and SEM electron microscope were used for microstructural studies Microstructural studies showed that the base metal microstructure consisted of ferrite and granular bainite and it was found that the weld metal included needle ferrite, polygonal ferrite and martensite / austenite MA islands It was found that the amount of needleferrite decreases with increasing inlet temperature The toughness of base metal and weld metals was determined by Sharpe impact test The results of Sharpe impact test showed that at ambient temperature, weld metal with high inlet heat has the highest fracture toughness Be And at 20 ° C, the base metal had the highest fracture toughness compared to the weld metal; And by increasing the inlet heat, the fracture toughness of the weld metal decreases
کلیدواژهها
نویسندگان
Jasem Savari
Master student, Department of Materials Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz Ahvaz, Iran
Reza Dehmolaei
Assistant Professor, Department of Materials Science & Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
Mohammad Reza Tavakoli Shoushtari
Assistant Professor, Department of Materials Engineering, Faculty of Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran
شیوه ارجاع
Savari, Jasem and Dehmolaei, Reza and Tavakoli Shoushtari, Mohammad Reza,1400,Effect heat input of GTAW process on the microstructure and fracture toughness of weld metal in API 5LX90 steel,4th International Conference on Welding and Non Destructive Testing & 22nd National Conference on Welding & Inspection & 11th National Conference on NDT,Isfahan
ارائهشده در
مجموعه مقالات چهارمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب و بیست و دومین کنفرانس ملی جوش و بازرسی و یازدهمین کنفرانس ملی آزمایش های غیرمخرب18 اسفند 1400 · اصفهان