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Title: Structure and mechanical properties of coatings fabricated by nonvacuum electron beam cladding of Ti-Ta-Zr powder mixtures

In this paper structural investigations and mechanical tests of Ti-Ta-Zr coatings obtained on surfaces of cp-titanium workpieces were carried out. It was found that the coatings had a dendrite structure; investigations at high-power magnifications revealed a platelet structure. An increase of tantalum concentration led to refinement of structural components. The microhardness level of all coatings, excepting a specimen with the maximum tantalum content, was 370 HV. The microhardness of this coating reached 400 HV. The ultimate tensile strength of cladded layers varied from 697 to 947 MPa. Adhesion tests showed that bimetallic composites were characterized by high bond strength of cladded layers to the substrate, which exceeded cp-titanium strength characteristics.
Authors:
; ; ;  [1]
  1. Novosibirsk State Technical University, Novosibirsk, 630073 (Russian Federation)
Publication Date:
OSTI Identifier:
22492586
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; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ADHESION; CLADDING; COATINGS; CONCENTRATION RATIO; DENDRITES; ELECTRON BEAMS; LAYERS; MECHANICAL TESTS; MICROHARDNESS; MIXTURES; POWDERS; PRESSURE RANGE MEGA PA 100-1000; SUBSTRATES; TANTALUM ADDITIONS; TENSILE PROPERTIES; TITANIUM ALLOYS; ZIRCONIUM ADDITIONS