Schmid factor analysis for chip flow induced plastic deformation of textured cubic carbonitride coatings
Artikel i vetenskaplig tidskrift, 2022

In high-speed metal machining, cutting tools in the form of cemented carbide inserts coated with thin wear-resistant coatings are commonly used. These coatings are often made of metal carbonitrides with cubic rock salt crystal structure and different growth textures. However, the influence of the crystallographic texture of the coatings on their wear by plastic deformation due to the chip flow during machining needs to be revealed further. In this work, in order to analyse the ability of polycrystalline fibre-textured coatings with a rock salt structure to undergo plastic deformation, a method was developed for calculating Schmid factors of such textured coatings as a function of the loading angle of an external force. The Schmid factors were calculated for coatings with 100 and 211 growth textures, and {100} <110>, {110}<110> and {111}<110> as possible slip systems. For the {111}<110> slip systems, the Schmid factors are not much influenced by the force angle and coating texture, which is contrary to the {100}<110> and {110}<110> slip systems. The simulations were compared to wear on the rake face of two textured Ti(C,N) coatings after short longitudinal turning tests. The variation of the degree of plastic deformation of Ti(C,N) coatings with growth texture and external force angle indicates that the dominant activated slip systems are {110}<110> using the machining conditions applied in this work.

Schmid factors


Deformation mechanism


Hard Coatings


Ren Qiu

Chalmers, Fysik, Mikrostrukturfysik

Siamak Shoja

Chalmers, Fysik, Mikrostrukturfysik


L. von Fieandt


Jan Engqvist


Olof Bäcke

Chalmers, Fysik, Mikrostrukturfysik

Hans-Olof Andrén

Chalmers, Fysik, Mikrostrukturfysik

Mats Halvarsson

Chalmers, Fysik, Mikrostrukturfysik

International Journal of Refractory Metals and Hard Materials

02634368 (ISSN) 22133917 (eISSN)

Vol. 108 105932

CVD 2.0 - En ny generation av hårda beläggningar

Stiftelsen för Strategisk forskning (SSF) (RMA15-0048), 2016-05-01 -- 2021-06-30.


Annan maskinteknik


Kompositmaterial och -teknik


Chalmers materialanalyslaboratorium





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