Effect of Hafnium on the Structural and Mechanical Properties of the Surface Layers on the Basis of TiNi

Peter Olegovich Rusinov; Zhesfina Blednova

doi:10.4028/www.scientific.net/MSF.863.8

Paper Titles

Wettability of TiAl Alloy on Calcia-Stabilized Zirconia
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Effect of Hafnium on the Structural and Mechanical Properties of the Surface Layers on the Basis of TiNi
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Microstructures and Mechanical Properties of Ti-Nb Alloy at Different Composition of Nb Produced via Powder Metallurgy Route
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On the Bead Geometry of Dissimilar Joints between SA516Gr65 and 304L Produced by TIG and A-TIG Welding
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Transition from Superplastic Behavior - Viscous Glide - Dislocation Climb - Power-Law Break down Regimes in Friction Stir Processed AA5083
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Microstructural and Mechanical Characterization of Artificially-Aged Power Plant Steel
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Effect of Composition on Tensile and Impact Properties of Tungsten-Based Heavy Alloy
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Failure Analysis of an Additive Manufactured Porous Titanium Structure for Orthopedic Implant Applications
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HomeMaterials Science ForumMaterials Science Forum Vol. 863Effect of Hafnium on the Structural and Mechanical...

Effect of Hafnium on the Structural and Mechanical Properties of the Surface Layers on the Basis of TiNi

Abstract:

The study contains a complex method of forming the surface-modified layers using materials with shape memory effect by high-speed gas-flame spraying of mechanically activated powders based on TiNiHf, followed by thermal and thermomechanical treatment. This allowed us to form the nanoscale state in the surface layers, which have high levels of functional, mechanical and performance properties. We demonstrated that pre-mechanoactivation of TiNiHf powder has reduced the coatings' porosity (less than 1%) and provided adhesive strength of the coating with the substrate (110 to 120 MPa). We described the formation mechanism of nanostructured state in TiNiHf powders under severe plastic deformation during mechanical activation, comprising the steps of high-speed deformation, polygonization and recrystallization.

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Periodical:

Materials Science Forum (Volume 863)

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8-13

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.863.8

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Online since:

August 2016

Authors:

Peter Olegovich Rusinov*, Zhesfina Blednova

Keywords:

Fatigue, Nanostructured Coatings, Shape Memory Effect

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