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http://hdl.handle.net/10397/94591
Title: | The material removal and the nanometric surface characteristics formation mechanism of TiC/Ni cermet in ultra-precision grinding | Authors: | Zhu, Y Zhang, Q Zhao, Q To, S |
Issue Date: | Apr-2021 | Source: | International journal of refractory metals & hard materials, Apr. 2021, v. 96, 105494 | Abstract: | In this paper, the material removal mechanism of TiC/Ni cermet is firstly investigated based on the analysis of the nano-indentation and the diamond scratching test, and the grinding induced surface damage mechanics is then explored according to the surface topography, the surface morphology and the material microstructure analysis. The results show that the material removal experienced plastic deformation, plowing and fracture under the dynamic scratching process, where the material microstructure plays a determinant role on the obtained surface characteristics of the TiC/Ni cermet. To achieve a smooth surface and ductile material removal by the ultra-precision grinding process, a group of the machining parameters is selected to reveal the formed nanometric surface characteristics, where the dislodgement of the hard TiC particles and the surface relief formation were induced by the varied material removal rate between the binding phases and the TiC hard particle under the scratching of the diamond grits. In addition, the preferred TiC (200) crystalline plane in the ground surface layer appears for the interface fracture between the TiC grains and the rim structure, while the Ni (111) crystalline plane shows a preferred growth for the extrusion in the subsurface deformed layer. | Keywords: | Mechanical loading Nanometric surface characteristic Surface damage TiC/Ni cermet |
Publisher: | Elsevier | Journal: | International journal of refractory metals & hard materials | ISSN: | 0263-4368 | DOI: | 10.1016/j.ijrmhm.2021.105494 | Rights: | © 2021 Elsevier Ltd. All rights reserved. © 2021. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Zhu, Y., Zhang, Q., Zhao, Q., & To, S. (2021). The material removal and the nanometric surface characteristics formation mechanism of TiC/Ni cermet in ultra-precision grinding. International Journal of Refractory Metals and Hard Materials, 96, 105494 is available at https://doi.org/10.1016/j.ijrmhm.2021.105494. |
Appears in Collections: | Journal/Magazine Article |
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