Influence of preheat temperature on the impact energy and tensile properties of the HSLA-70 steel
Publish place: The 17th National Conference on Welding and Inspection and the 8th National Conference on Nondestructive Testing
Publish Year: 1395
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
INCWI17_020
تاریخ نمایه سازی: 9 آذر 1398
Abstract:
In the present work, API-5L X70 (HSLA) steel plates were uniformly preheated at different temperatures before the welding process (SMAW). E7010, E8018 and E7024 electrodes are used to weld the butt joint of API -5L X70 steel plates with 20mm thickness. Tensile and Charpy impact tests were performed on the samples according to AWS and ASTM standards. The results show that by increasing the preheat temperature, tensile strength of the HAZ was decreased and the impact energy was increased. This behavior in mechanical properties of the HAZ is due to the stress relief along with the microstructural modification of HAZ.
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Authors
m Ghaderi
Post-graduate Student, Department ofMaterials Engineering, KarajBranch,Islamic Azad University,Karaj, Iran.
h Sabet
Associate Professor, Department of Materials Engineering,KarajBranch, Islamic Azad University, Karaj, Iran.
h Ahmad Mehrabi
Assistant Professor, Department of Materials Engineering,KarajBranch, Islamic Azad University, Karaj, Iran.