چکیده مقاله
In this research, the heat affected zone of resistance spot welds with different weldingcurrents for TRIP steel was investigated The HAZ zone of resistance spot welding hasbeen divided into three zones from the point of view of metallurgy: the upper criticalzone, the inter critical zone, the sub critical zone, the zone affected by the high heat ofthe fine grain and the zone affected by the high heat of the coarse grain The uppercritical zone was divided into two parts, the coarse zone Grain and fine grained region,the thermal cycle increased the grain growth at a temperature higher than the coarse grainregion during welding, and reduced the grain structure at a lower temperature Afterconducting shear and cross tensile tests and checking the fracture energy, it wasdetermined that weld fracture will occur in the supercritical region due to the presence ofsome separations due to the rich chemical composition of the alloy and theinterconnected boundaries The crack was preferably played through the weld button andin the final joint mode Crack formation at the edge of the weld button in UCHAZ wasdeflected up and down through the thickness The speed of stress accumulation inUCHAZ caused the crack to spread only inside the UCHAZ
کلیدواژهها
نویسندگان
Iman Hajiannia
Assistant Professor of Shahid Mohajer Faculty, Chahar Mahal and Bakhtiari Steel Company
Jamshid Alibabaei Shahraki
Technology management and development of Chaharmahal and Bakhtiari steel company
Ahmad Khalilian
Mobarakeh Steel Engeniierng Company MSE
Abdolrahman Chavoshini
Mobarakeh Steel Engeniierng Company MSE
Hosein Naderbeiki
Mobarakeh Steel Engeniierng Company MSE
شیوه ارجاع
Hajiannia, Iman and Alibabaei Shahraki, Jamshid and Khalilian, Ahmad and Chavoshini, Abdolrahman and Naderbeiki, Hosein,1401,Investigating the failure of spot resistance welds In the heat-affected zone of TRIP steels,5th International Conference on Welding and Non Destructive Testing & 23rd National Conference on Welding & Inspection & 12th National Conference on NDT,Isfahan
ارائهشده در
مجموعه مقالات پنجمین کنفرانس بین المللی جوشکاری و آزمایش های غیرمخرب،بیست و سومین کنفرانس ملی جوش و بازرسی و دوازدهمین کنفرانس ملی آزمایش های غیرمخرب و اولین کنفرانس ملی ساخت افزایشی10 اسفند 1401 · اصفهان