Strength ranking for interfaces between a TiN hard coating and microstructural constituents of high speed steel determined by micromechanical testing

Matthias Gsellmann, Thomas Klünsner, Christian Mitterer, Martin Krobath, Michael Wurmshuber, Harald Leitner, Werner Ecker, Stefan Marsoner, Verena Maier-Kiener, Daniel Kiener, Gerald Ressel

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

4 Zitate (Scopus)
39 Downloads (Pure)

Abstract

Knowledge about the adhesion of protective hard coatings on tool materials is of great importance to understand their failure mechanisms in metalworking. Until now, common techniques such as scratch and indentation tests are used to establish a qualitative ranking of a coating's adhesion on various substrate materials. Nevertheless, there is a lack of quantitative measures to describe the strength of the interfaces between individual microstructural constituents of substrate-coating composites. The current work investigates the interfacial strength and thus the adhesion of TiN deposited as a hard coating on an MC-type carbide, an M 6C-type carbide and on martensite being constituents of high speed steels. Tensile stresses were introduced at the interface between TiN and the individual microstructural constituents of a high speed steel via micromechanical testing of a novel MSC specimen within a scanning electron microscope. The tested MSC specimens were subsequently investigated in detail by scanning electron microscopy. Evaluation of the interface stress at fracture via finite element analysis yielded a ranking in interface strength and therefore coating adhesion in a sequence from high to low strength values from MC/TiN over M 6C/TiN to martensite/TiN.

OriginalspracheEnglisch
Aufsatznummer109690
Seitenumfang11
FachzeitschriftMaterials and Design
Jahrgang204.2021
AusgabenummerJune
DOIs
PublikationsstatusVeröffentlicht - 31 März 2021

Bibliographische Notiz

Funding Information:
The authors gratefully acknowledge the financial support under the scope of the COMET program within the K2 Center ?Integrated Computational Material, Process and Product Engineering (IC-MPPE)? (Project No 859480). This program is supported by the Austrian Federal Ministries for Climate Action, Environment, Energy, Mobility, Innovation and Technology (BMK) and for Digital and Economic Affairs (BMDW), represented by the Austrian research funding association (FFG), and the federal states of Styria, Upper Austria and Tyrol. D. Kiener and M. Wurmshuber acknowledge funding by the European Research Council ERC via project No. 771146 (TOUGHIT).

Funding Information:
The authors gratefully acknowledge the financial support under the scope of the COMET program within the K2 Center “Integrated Computational Material, Process and Product Engineering (IC-MPPE)” (Project No 859480). This program is supported by the Austrian Federal Ministries for Climate Action, Environment, Energy, Mobility, Innovation and Technology (BMK) and for Digital and Economic Affairs (BMDW), represented by the Austrian research funding association (FFG), and the federal states of Styria, Upper Austria and Tyrol.

Funding Information:
D. Kiener and M. Wurmshuber acknowledge funding by the European Research Council ERC via project No. 771146 (TOUGHIT).

Publisher Copyright:
© 2021 The Author(s)

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