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Title: Influence of laser cladding regimes on structural features and mechanical properties of coatings on titanium substrates

In this paper an influence of the tantalum content on the structure and properties of surface layers of the titanium alloy doped using a laser treatment technology was investigated. It was found that an increase of a quantity of filler powder per one millimeter of a track length contributed to a rise of the content of undissolved particles in coatings. The maximum thickness of a cladded layer was reached at the mass of powder per the length unit equaled to 5.5 g/cm. Coatings were characterized by the formation of a dendrite structure with attributes of segregation. The width of a quenched fusion zone grew with an increase in the rate of powder feed to the treated area. Significant strengthening of the titanium surface layer alloyed with tantalum was not observed; however, the presence of undissolved tantalum particles can decrease the hardness of titanium surface layers.
Authors:
; ;  [1] ;  [2]
  1. Novosibirsk State Technical University, Novosibirsk, 630073 (Russian Federation)
  2. National Engineering School in Saint-Etienne, Saint-Etienne, 42000 France (France)
Publication Date:
OSTI Identifier:
22492565
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:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; CLADDING; COATINGS; DENDRITES; DOPED MATERIALS; FILLERS; HARDNESS; LASERS; LAYERS; LENGTH; PARTICLE TRACKS; PARTICLES; POWDERS; SEGREGATION; SUBSTRATES; SURFACES; TANTALUM; THICKNESS; TITANIUM; TITANIUM ALLOYS; WIDTH