Reducing Intermetallic Compounds of Mg/Al Joint in Friction Stir Lap Welding
Journal Article
·
· Journal of Materials Engineering and Performance
To reduce intermetallic compounds (IMCs) of Al{sub 12}Mg{sub 17} and Al{sub 3}Mg{sub 2} in Mg/Al friction stir lap welding joint, pin tip was plunged into the lower sheet at a small distance. Results showed that at a fixed welding speed of 50 mm/min, sound joints were obtained using rotating speeds from 750 to 500 rpm, and the IMCs zones were rather small. Cracks easily appeared inside IMCs inside onion ring and at lap interface. Therefore, reducing the IMC was beneficial for reducing the crack. Joint lap shear stress firstly increased and then decreased with decrease in the rotating speed. The maximum shear stress of 50.2 MPa was attained at a rotating speed of 500 rpm because of reduced IMC.
- OSTI ID:
- 22863167
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 11 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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