Elevated temperature micro-impact testing of TiAlSiN coatings produced by physical vapour deposition

被引：18
作者：
Beake, Ben D. [1 ]
Bird, Andrew [1 ]
Isern, Luis [2 ]
Endrino, Jose L. [2 ]
Jiang, Feng [3 ]
机构：
[1] Micro Mat Ltd, Willow House,Ellice Way, Wrexham LL13 7YL, Wales
[2] Cranfield Univ, Sch Aerosp Transport & Mfg, Bedford MK43 0AL, England
[3] Huaqiao Univ, Inst Mfg Engn, Xiamen 361021, Fujian, Peoples R China
来源：
THIN SOLID FILMS | 2019年 / 688卷
基金：
“创新英国”项目;
关键词：
Micro-impact; Fracture resistance; Elevated temperature; Titanium aluminium silicon nitride; MECHANICAL-PROPERTIES; PVD COATINGS; TRIBOLOGICAL PROPERTIES; CUTTING PERFORMANCE; THERMAL-STABILITY; TIN/CRN COATINGS; CONTACT DAMAGE; COATED TOOLS; RESISTANCE; ALTIN;
D O I：
10.1016/j.tsf.2019.06.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页数：9
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