[HTML][HTML] Predictive modelling for enhanced scratching of brittle ceramics with magneto-plasticity

Y Guo, J Zhan, YJ Lee, WF Lu, H Wang - International Journal of …, 2023 - Elsevier
The micro-cutting of brittle ceramics starts with elastic-plastic deformation followed by severe
brittle fracture, which significantly restricts the machinability and application of these …

Mechanism in scratching of calcium fluoride with magneto-plasticity

Y Guo, J Zhan, WF Lu, H Wang - International Journal of Mechanical …, 2024 - Elsevier
Magnetic field-tuned dislocation plasticity (ie, magneto-plasticity) has attracted growing
attention for assistance to limit the damage evolution of brittle ceramics in the material …

Effect of a weak magnetic field on ductile–brittle transition in micro-cutting of single-crystal calcium fluoride

Y Guo, YJ Lee, Y Zhang, A Sorkin, S Manzhos… - Journal of Materials …, 2022 - Elsevier
Magneto-plasticity occurs when a weak magnetic field alters material plasticity and offers a
viable solution to enhance ductile-mode cutting of brittle materials. This study demonstrates …

Magneto-plasticity in micro-cutting of single-crystal copper

Y Guo, YJ Lee, Y Zhang, H Wang - Journal of Materials Science & …, 2022 - Elsevier
The plasticity of metals can be significantly affected by the application of a magnetic field,
otherwise known as the magneto-plastic effect. This paper investigates the magneto-plastic …

Elastic stress field model and micro-crack evolution for isotropic brittle materials during single grit scratching

W Wang, P Yao, J Wang, C Huang, T Kuriyagawa… - Ceramics …, 2017 - Elsevier
An analytical model for the elastic stress field in isotropic hard and brittle materials during
scratching is presented. The model considers the entire elastic stress field and the effect of …

Simulation of orthogonal micro-cutting of FCC materials based on rate-dependent crystal plasticity finite element model

SA Tajalli, MR Movahhedy, J Akbari - Computational Materials Science, 2014 - Elsevier
Micro-machining of face centered cubic (FCC) metallic materials is simulated via the theory
of rate-dependent crystal plasticity. This approach accounts for slip systems and …

On the improvement of the ductile removal ability of brittle KDP crystal via temperature effect

Q Liu, M Chen, Z Liao, J Feng, D Xu, J Cheng - Ceramics International, 2021 - Elsevier
Abstract Brittle KH 2 PO 4 (KDP) crystal is difficult-to-machine because of its low fracture
resistance whereby brittle cracks can be easily introduced in machining processes. To …

Studying crack generation mechanism in single-crystal sapphire during ultra-precision machining by MD simulation-based slip/fracture activation model

SB Kwon, A Nagaraj, D Xi, Y Du, DN Kim… - International Journal of …, 2023 - Springer
Single-crystal sapphire is used in various fields of industry due to its superior mechanical,
optical, and chemical properties, but fabricating sapphire is challenging because of its high …

Temperature effect on the material removal mechanism of soft-brittle crystals at nano/micron scale

Q Liu, Z Liao, D Axinte - International Journal of Machine Tools and …, 2020 - Elsevier
Soft-brittle crystals, eg KH 2 PO 4 (KDP), are difficult-to-cut due to their high brittleness which
can easily generate crack during the machining process. The conventional method to …

On the mechanism of asymmetric ductile–brittle transition in microcutting of (111) CaF2 single crystals

H Wang, O Riemer, K Rickens, E Brinksmeier - Scripta Materialia, 2016 - Elsevier
In contrast to forming an amorphous deformed layer, lattice rotation induced asymmetric
ductile–brittle transition (aDBT) is first identified in the microcutting of (111) CaF 2 single …