Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ceramint.2020.05.069
Title: Transmission electron microscopy (TEM) study of anisotropic surface damages in micro-cutting polycrystalline aluminate magnesium spinel (PAMS) crystals
Authors: Shi, Z
Zhang, J 
Zhao, Q
Guo, B
Wang, H. 
Issue Date: 1-Jan-2020
Publisher: Elsevier BV
Citation: Shi, Z, Zhang, J, Zhao, Q, Guo, B, Wang, H. (2020-01-01). Transmission electron microscopy (TEM) study of anisotropic surface damages in micro-cutting polycrystalline aluminate magnesium spinel (PAMS) crystals. Ceramics International. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ceramint.2020.05.069
Abstract: © 2020 Elsevier Ltd and Techna Group S.r.l. The synergy of anisotropy within each single-crystal grain and high brittleness of polycrystalline aluminate magnesium spinel (PAMS) leads to its poor machinability and regional surface damages. The mechanism of the featured cracks is first studied with transmission electron microscopic (TEM) observation beneath the machined surfaces of two adjacent grains with different surface integrities. The comparison of Schmid factors of both grains signifies that the activity of the slip systems is responsible for ductile or brittle cutting mode. The cooperation of lattice gliding on the slip planes and the irreconcilable slip directions with the compulsive cutting motion leads to the anisotropic damage patterns.
Source Title: Ceramics International
URI: https://scholarbank.nus.edu.sg/handle/10635/168898
ISSN: 02728842
DOI: 10.1016/j.ceramint.2020.05.069
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