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

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.
Authors:
; ;  [1] ; ; ; ;  [1] ;  [2]
  1. Institute of Strength Physics and Materials ScienceTomsk, 634055 (Russian Federation)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
22492524
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1683; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; FRICTION; MICROHARDNESS; OPTICAL MICROSCOPY; PRECIPITATION; TRANSMISSION ELECTRON MICROSCOPY; ULTRASONIC WELDING; WELDED JOINTS