Volume 11, Issue 2 (Journal OF Welding Science and Technology 2025)
JWSTI 2025, 11(2): 1-12 |
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Karimi Dizaj Cheragh M, Sajed M, Saeimi Sadigh M A, Abyazi A, Heidarzadeh A. An experimental study on surface groove repair in pure magnesium using surface friction stir processing. JWSTI 2025; 11 (2) :1-12
URL: http://jwsti.iut.ac.ir/article-1-500-en.html
URL: http://jwsti.iut.ac.ir/article-1-500-en.html
1- Department of Mechanical Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran.
2- Department of Materials Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran.
3- Department of Materials and Metallurgy, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran. ,a_heydarzadeh@sbu.ac.ir
2- Department of Materials Engineering, Azarbaijan Shahid Madani University, Tabriz, Iran.
3- Department of Materials and Metallurgy, Faculty of Mechanical and Energy Engineering, Shahid Beheshti University, Tehran, Iran. ,
Abstract: (35 Views)
This study experimentally investigates the repair of surface grooves on pure magnesium samples using the surface friction stir processing (SFSP). Grooves with depths of 0.5, 1, and 1.5 mm were created and subsequently repaired under constant parameters of 1400 rpm rotational speed and 40 mm/min travel speed. The results revealed that the stir zone (SZ) exhibited fine equiaxed grains due to complete dynamic recrystallization, leading to significant improvements in tensile strength and hardness compared to the base metal. The highest ultimate tensile strength of 66.1 MPa and hardness of 60 HV were achieved in the 1 mm groove sample. Additionally, partial dynamic recrystallization was observed in the thermo-mechanically affected zone (TMAZ), and complete elimination of grooves was confirmed in all samples. These findings demonstrate that the SFSP is highly effective for localized repair and enhancement of mechanical properties in magnesium components, offering a promising solution to extend the service life of damaged magnesium parts.
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