Structure and properties of fixed joints formed by ultrasonic-assisted friction-stir welding

Journal Article · Tue Oct 27 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4932745· OSTI ID:22492524

Fortuna, S. V., E-mail: [e-mail]; Ivanov, K. V., E-mail: [e-mail]; Eliseev, A. A., E-mail: [e-mail] ^[1]; Tarasov, S. Yu., E-mail: [e-mail]; Ivanov, A. N., E-mail: [e-mail]; Rubtsov, V. E., E-mail: [e-mail]; Kolubaev, E. A., E-mail: [e-mail] ^[1]; National Research Tomsk Polytechnic University, Tomsk, 634050 ^[2]

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1. Institute of Strength Physics and Materials ScienceTomsk, 634055 (Russian Federation)
2. (Russian Federation)

This paper deals with structure and properties of aluminum alloy 7475 and its joints obtained by friction stir welding including under ultrasonic action. Microhardness measurements show that ultrasonic action increases strength properties of the joints. Optical and transmission electron microscopy reveals that this effect is related to the precipitation of tertiary coherent S-and T-phase particles.

• OSTI ID: 22492524
• Journal Information: AIP Conference Proceedings, Vol. 1683, Issue 1; Conference: International conference on advanced materials with hierarchical structure for new technologies and reliable structures 2015, Tomsk (Russian Federation), 21-25 Sep 2015; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
FRICTION
MICROHARDNESS
OPTICAL MICROSCOPY
PRECIPITATION
TRANSMISSION ELECTRON MICROSCOPY
ULTRASONIC WELDING
WELDED JOINTS