Title

Strain-Induced Phase Transformation of MCrAlY

Authors

Authors

C. Borchers; T. Stoltenhoff; M. Hahn; M. Schulze; H. Assadi; C. Suryanarayana; F. Gartner;T. Klassen

Comments

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Abbreviated Journal Title

Adv. Eng. Mater.

Keywords

OXIDATION BEHAVIOR; MARTENSITIC-TRANSFORMATION; CRYSTAL NUCLEATION; BONDING MECHANISM; COATINGS; SOLIDIFICATION; ALLOYS; NI; KINETICS; PLASMA; Materials Science, Multidisciplinary

Abstract

There is an increasing interest in cold spraying, which is commonly characterized as a solid-state deposition process offering minimal structural changes. The present paper refutes this common perception by examining the structural changes in MCrAlY as induced by cold spraying (CS). The cold-sprayed coatings were characterized for phase composition and microstructural features using X-ray diffraction, scanning electron microscopy (SEM), and transmission electron microscopy (TEM) techniques. These results are compared with those obtained from the feedstock powder, as well as those obtained from ball-milled powder. An extensive phase transition from bcc to fcc is observed after both CS and after ball milling. In CS, in addition, there is evidence for substantial grain refinement, which is not observed after ball milling.

Journal Title

Advanced Engineering Materials

Volume

17

Issue/Number

5

Publication Date

1-1-2015

Document Type

Article

Language

English

First Page

723

Last Page

731

WOS Identifier

WOS:000354417300019

ISSN

1438-1656

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