The Role of Friction Stir Welding on the Microstructure and Mechanical Properties of AZ31B-H24 Mg alloy

Journal Article · Mon Dec 26 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3663177· OSTI ID:21612465

Darzi, Kh; Saeid, T ^[1]

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1. Advanced Materials Research Center - Faculty of Materials Engineering, Sahand University of Technology - Tabriz (Iran, Islamic Republic of)

In this study, an attempt was made to join AZ31B magnesium alloy by friction stir welding (FSW) process. A single tool with cylindrical screw threaded pin was used to investigate the effect of welding parameters on microstructure and mechanical properties of stir zone (SZ). Several welds were made at different rotational ({omega}) and traverse ({upsilon}) speeds, while the {omega}/{upsilon} ratios were kept constant. The optical and scanning electron microscopy were used to study the variation of microstructure across the welds. Moreover, micro-hardness and tensile tests were carried out to evaluate the mechanical properties of joints. It was found that {omega} plays more significant role on the resulted grain structure than {upsilon}, and at a constant {omega}/{upsilon} ratio, decreasing rotational speed decreased the size of grains, and hence, improved the hardness value and the tensile strength of the SZ.

• OSTI ID: 21612465
• Journal Information: AIP Conference Proceedings, Vol. 1400, Issue 1; Conference: International congress on advances in applied physics and materials science, Antalya (Turkey), 12-15 May 2011; Other Information: DOI: 10.1063/1.3663177; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CYLINDRICAL CONFIGURATION
FRICTION
HARDNESS
MAGNESIUM ALLOY-AZ31B
MICROSTRUCTURE
SCANNING ELECTRON MICROSCOPY
TENSILE PROPERTIES
VARIATIONS
VELOCITY
WELDED JOINTS
WELDING
ALLOYS
ALUMINIUM ALLOYS
CONFIGURATION
ELECTRON MICROSCOPY
FABRICATION
JOINING
JOINTS
MAGNESIUM ALLOYS
MAGNESIUM BASE ALLOYS
MANGANESE ADDITIONS
MANGANESE ALLOYS
MECHANICAL PROPERTIES
MICROSCOPY
TRANSITION ELEMENT ALLOYS
ZINC ALLOYS