Structure and mechanical properties of coatings fabricated by nonvacuum electron beam cladding of Ti-Ta-Zr powder mixtures
- Novosibirsk State Technical University, Novosibirsk, 630073 (Russian Federation)
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.
- OSTI ID:
- 22492586
- 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
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Related Subjects
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