PSI - Issue 23

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Available online at www.sciencedirect.com Structural Integrity Procedia 00 (2019) 000 – 000 Structural Integrity Procedia 00 (2019) 000 – 000

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ScienceDirect

Procedia Structural Integrity 23 (2019) 541–546

© 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers © 201 9 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. Abstract Th main topic of the research conducted by the auth rs of thi article i the study of the m chanical properties of surface layers after finis machining by two m thods. The material of th test samples s 33NiCrMoV steel. The main aim of the autho s is to compare hardness of the machined s rface lay rs of this steel fter hard finish turning and grinding. In the experi ental process, quasi-static nanoindentation technique wi the cube corner was used, and the microstructural analysis was performed by atomic force microscopy (AFM). Eve before th start of the measurements that investigated the inf uence of hard finish turning echnology against r und grinding, it w s ne es a y o subject the investigated 33NiCrMoV15 steel to basic research with reg r to its ch mical comp sition, fundamental microstructure and also microstructure of machin d urfaces and basic mechani al and nano-mechanical properties . The microstructur was realized on th Oxford Inst uments MFP-3D Infinity atomic force icroscope AFM. All of these m asurements were pe formed f r inv stigating aterial proper es using AF-FM vi co lastic mapping m de, which can regist r nanomechanical properties of materials. Chemical comp sitio of investigated steel was performed on th pectral analyz Spectrolab Jr CCD. Nano-mechanical prop rties, like nanohardness H and reduced Young mod lus E r were sub equently performed on t Hysit on TI950 Triboindenter with a Cube Corner measuring tip, and then evaluated by the Triboscan softwar . Based on t e acquir d values, a 2D nanostructure of the distribution map of s H nd E r as then evaluated Matlab. This scientific research, together wi h all mea ured and calcul ted values, is the fundamental that w ll help to optimiz g the quality and used all these results to optimize presented material and technological finishing processes in term of surface integrity. © 201 9 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND license (http://creativecommon org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 9th International Conference on Materials Structure and Micromechanics of Fracture Investigation of mechanical properties of hard finish turned and grinded surfaces Jozef Majerík a *, Igor Barényi a , Maroš Eckert a a Faculty of special technology, Alexander Dubcek University of Trencin, Pri Parku 19, Trencin, 911 06, Slovakia Abstract The main topic of the research conducted by the authors of this article is the study of the mechanical properties of surface layers after finish machining by two methods. The material of the test samples is 33NiCrMoV steel. The main aim of the authors is to compare hardness of the machined surface layers of this steel after hard finish turning and grinding. In the experimental process, quasi-static nanoindentation technique with the cube corner was used, and the microstructural analysis was performed by atomic force microscopy (AFM). Even before the start of the measurements that investigated the influence of hard finish turning technology against round grinding, it was necessary to subject the investigated 33NiCrMoV15 steel to basic research with regard to its chemical composition, fundamental microstructure and also microstructure of machined surfaces and basic mechanical and nano-mechanical properties . The microstructure was realized on the Oxford Instruments MFP-3D Infinity atomic force microscope AFM. All of these measurements were performed for investigating material properties using AF-FM viscoelastic mapping mode, which can register nanomechanical properties of materials. Chemical composition of investigated steel was performed on the spectral analyzer Spectrolab Jr CCD. Nano-mechanical properties, like nanohardness H and reduced Young modulus E r were subsequently performed on the Hysitron TI950 Triboindenter with a Cube Corner measuring tip, and then evaluated by the Triboscan software. Based on the acquired values, a 2D nanostructure of the distribution map of s H and E r was then evaluated in Matlab. This scientific research, together with all measured and calculated values, is the fundamental that will help to optimizing the quality and used all these results to optimize presented material and technological finishing processes in term of surface integrity. 9th International Conference on Materials Structure and Micromechanics of Fracture Investigation of mechanical properties of hard finish turned and grinded surfaces Jozef Majerík a *, Igor Barényi a , Maroš Eckert a a Faculty of special technology, Alexander Dubcek University of Trencin, Pri Parku 19, Trencin, 911 06, Slovakia Keywords: hard finish turning; grinding; quasi-static nanoindentation technique; cube corner measuring tip; atomic force microscopy Keywords: hard finish turning; grinding; quasi-static nanoindentation technique; cube corner measuring tip; atomic force microscopy

* Corresponding author. Tel.: +421-32-7400-210. E-mail address: jozef.majerik@tnuni.sk * Correspon ing author Tel.: +421-32-7400-210. E-mail address: jozef.majerik@tnuni.sk

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the IC MSMF organizers. 2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an ope acces article under CC BY-NC-ND lic nse (http://creativecommon org/licenses/by-nc-nd/4.0/)

Peer-review under responsibility of the scientific committee of the IC MSMF organizers.

2452-3216 © 2019 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of the ICMSMF organizers 10.1016/j.prostr.2020.01.142