S
S. Hadjiyiannis
Researcher at Aristotle University of Thessaloniki
Publications - 19
Citations - 738
S. Hadjiyiannis is an academic researcher from Aristotle University of Thessaloniki. The author has contributed to research in topics: Coating & Cemented carbide. The author has an hindex of 14, co-authored 19 publications receiving 701 citations.
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The effect of specimen roughness and indenter tip geometry on the determination accuracy of thin hard coatings stress–strain laws by nanoindentation
Konstantinos-Dionysios Bouzakis,Nikolaos Michailidis,S. Hadjiyiannis,Georgios Skordaris,Georg Erkens +4 more
TL;DR: In this article, the effect of specimen roughness on the accuracy of the indentation results is taken into account, and the results introduced show that the defined material elastoplastic deformation characteristics, based on the nanoindentation test results, are independent of the indenter type (Vickers or Berkovich) when deviations in the indent tip geometry from the ideal are considered.
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Improvement of PVD coated inserts cutting performance, through appropriate mechanical treatments of substrate and coating surface
Konstantinos-Dionysios Bouzakis,Nikolaos Michailidis,S. Hadjiyiannis,Kyriakos Efstathiou,Eleni Pavlidou,Georg Erkens,S. Rambadt,I. Wirth +7 more
TL;DR: In this paper, the wear behavior of coated cemented carbides (HM) inserts with various substrate and coating surface mechanical treatments were investigated experimentally in milling and analytically through a finite-elements method (FEM) simulation of the cutting process.
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Properties and performance of high aluminum containing (Ti,Al)N based supernitride coatings in innovative cutting applications
Georg Erkens,R. Cremer,T. Hamoudi,Konstantinos-Dionysios Bouzakis,I. Mirisidis,S. Hadjiyiannis,Georgios Skordaris,A. Asimakopoulos,S. Kombogiannis,J. Anastopoulos,Kyriakos Efstathiou +10 more
TL;DR: In this article, a new generation of high performance hard coatings, the supernitrides, was developed based on a unique plasma enhanced sputtering technology, which are characterized by a dense, nano-crystalline or nano-layered structure and a high content of oxide forming elements.
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The effect of coating thickness, mechanical strength and hardness properties on the milling performance of PVD coated cemented carbides inserts
Konstantinos-Dionysios Bouzakis,S. Hadjiyiannis,Georgios Skordaris,I. Mirisidis,Nikolaos Michailidis,Kyriakos Efstathiou,Eleni Pavlidou,Georg Erkens,R. Cremer,S. Rambadt,I. Wirth +10 more
TL;DR: In this paper, the effect of coating hardness and strength on the cutting performance in milling, (Ti46Al54)N films having thickness from 3 to 10 μm and varying hardness were deposited on cemented carbides inserts.
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Optimisation of the cutting edge roundness and its manufacturing procedures of cemented carbide inserts, to improve their milling performance after a PVD coating deposition
Konstantinos-Dionysios Bouzakis,Nikolaos Michailidis,Georgios Skordaris,S. Kombogiannis,S. Hadjiyiannis,Kyriakos Efstathiou,Eleni Pavlidou,Georg Erkens,S. Rambadt,I. Wirth +9 more
TL;DR: In this article, the fatigue and wear behavior of PVD coatings on carbide inserts with various cutting edge radii were investigated experimentally and analytically in milling.