TY - JOUR

T1 - Bond strength between TiN coating and microstructural constituents of a high speed steel determined by first principle calculations

AU - Gsellmann, Matthias

AU - Scheiber, Daniel

AU - Klünsner, Thomas

AU - Zalesak, Jakub

AU - Zhang, Zaoli

AU - Leitner, Harald

AU - Mitterer, Christian

AU - Ressel, Gerald

AU - Romaner, Lorenz

N1 - Publisher Copyright: © 2021

PY - 2022/1/1

Y1 - 2022/1/1

N2 - The adhesion of protective hard coatings to the substrate is one of the most important parameters that influence the performance of metal cutting tools. By a combination of high-resolution transmission electron microscopy and first principles modelling we determine the interface adhesion between a TiN hard coating and microstructural constituents of a high speed steel on an atomic level for the first time. Based on experimentally observed orientation relationships, multiple structures are studied for each interface and both interface cohesion and resistance to sliding are evaluated for MC and M 6C carbides as well as the martensitic matrix to TiN coating. We find that TiN coatings have high adhesion to MC carbides, while lower adhesion is present for M 6C and the martensitic matrix. Close agreement with experimental measurements validates this approach and suggests new strategies for developing steels with increased coating adhesion.

AB - The adhesion of protective hard coatings to the substrate is one of the most important parameters that influence the performance of metal cutting tools. By a combination of high-resolution transmission electron microscopy and first principles modelling we determine the interface adhesion between a TiN hard coating and microstructural constituents of a high speed steel on an atomic level for the first time. Based on experimentally observed orientation relationships, multiple structures are studied for each interface and both interface cohesion and resistance to sliding are evaluated for MC and M 6C carbides as well as the martensitic matrix to TiN coating. We find that TiN coatings have high adhesion to MC carbides, while lower adhesion is present for M 6C and the martensitic matrix. Close agreement with experimental measurements validates this approach and suggests new strategies for developing steels with increased coating adhesion.

UR - http://www.scopus.com/inward/record.url?scp=85118779691&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2021.117439

DO - 10.1016/j.actamat.2021.117439

M3 - Article

VL - 222.2022

JO - Acta materialia

JF - Acta materialia

SN - 1359-6454

IS - 1 January

M1 - 117439

ER -