Title Elevated temperature micro-impact testing of TiAlSiN coatings produced by physical vapour deposition
Authors Beake, Ben D. , Bird, Andrew , Isern, Luis , ENDRINO ARMENTEROS, JOSÉ LUIS, Jiang, Feng
External publication Si
Means Thin Solid Films
Scope Article
Nature Científica
JCR Quartile 3
SJR Quartile 2
JCR Impact 2.03000
SJR Impact 0.51300
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85067185381&doi=10.1016%2fj.tsf.2019.06.008&partnerID=40&md5=cdd1d71803c19f77ee50bbeb4e98b93a
Publication date 31/10/2019
ISI 000485256500017
Scopus Id 2-s2.0-85067185381
DOI 10.1016/j.tsf.2019.06.008
Abstract A high temperature micro-impact test has been developed to assess the fracture resistance of hard coatings under repetitive dynamic high strain rate loading at elevated temperatures. The test was used to study the temperature dependence of the resistance to micro-scale impact fatigue of TiAlSiN coatings on cemented carbide at 25-600 degrees C. Nanoindentation and micro-scratch tests were also performed over the same temperature range. The results of the micro-impact tests were dependent on the impact load, coating microstructure, coating and substrate mechanical properties, and their temperature dependence. At higher temperatures there was a change in failure mechanism from fracture-dominated to plasticity-dominated behaviour under the cyclic loading conditions. This was attributed to coating and substrate softening.
Keywords Micro-impact; Fracture resistance; Elevated temperature; Titanium aluminium silicon nitride
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