THE EFFECT OF MORPHOLOGY AND PARTICLE-SIZE DISTRIBUTION OF VT20 TITANIUM ALLOY POWDERS ON THE MECHANICAL PROPERTIES OF DEPOSITED COATINGS

Z.A.Duriagina,
 
I.A.Lemishka,
 
A M.Trostianchyn,
 
V.V.Kulyk,
 
S.G.Shvachko,
 
T.L.Tepla,
 
E.I.Pleshakov,
 
T.M.Kovbasyuk
 

Powder Metallurgy - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2018, #11/12
http://www.materials.kiev.ua/article/2691

Abstract

The surface morphology has been studied and the microhardness and plasticity of coatings produced from VT20 titanium alloy powders with spherical and nonspherical particles with different particle-size distributions have been determined. It is shown that the deposited coatings based on nonspherical powders are characterized by a fine-grained structure and are not inferior in the micromechanical properties to the coatings based on spherical powders. The coatings deposited from powders of fraction –160+40 μm are characterized by an optimal ratio of microhardness, plasticity characteristics, and yield stress, regardless of their structural morphology.


MORPHOLOGY OF COATING, NONSPHERICAL AND SPHERICAL POWDERS, PLASTICITY, TITANIUM ALLOY POWDERS, YIELD STRENGTH