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Influence of preheat temperature on the impact energy and tensile properties of the HSLA-70 steel

Publish place: The second international conference on welding and non-destructive testing, the 17th national conference on welding and inspection, and the sixth national conference on non-destructive testing
Publish Year: 1395
Type: Conference paper
Language: English
View: 524

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Link to this Paper:
https://civilica.com/doc/962661

Document National Code:

INCWI17_020

Index date: 30 November 2019

Influence of preheat temperature on the impact energy and tensile properties of the HSLA-70 steel 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.

Influence of preheat temperature on the impact energy and tensile properties of the HSLA-70 steel Keywords:

Preheat temperature , HAZ , SMAW , tensile strength , impact energy

Influence of preheat temperature on the impact energy and tensile properties of the HSLA-70 steel 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.