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Volume 13
Issue 4
10.3390/ma13041006
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Article

Nanoscale Plasticity Behavior of Additive-Manufactured Zirconia-Toughened Alumina Ceramics during Nanoindentation

by
Wenli Li
,
Weiwei Liu
,
Maoshan Li
,
Jianbin Nie
,
Yao Chen
and
Zhanwen Xing
*
School of Mechanical & Electric Engineering, Soochow University, Suzhou 215021, China
*
Author to whom correspondence should be addressed.
Materials 2020, 13(4), 1006; https://doi.org/10.3390/ma13041006
Submission received: 6 February 2020 / Revised: 18 February 2020 / Accepted: 21 February 2020 / Published: 24 February 2020
(This article belongs to the Section Advanced Materials Characterization)
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Abstract

The nanoscale plasticity phenomena in zirconia-toughened alumina (ZTA) ceramics with yttria-stabilized zirconia (YSZ) addition of 10% and 30% fabricated by additive manufacturing based on a stereolithography technique were explored in detail by nanoindentation and scanning electron microscopy. It was demonstrated that the initiation of nanoscale plasticity was attributed to the combined contributions from the generation of nanoscale shear deformation bands and localized microcracking at the indentations. Such localized plastic behavior underneath the nanoindenter was interpreted by maximum shear stress analysis. The response of the phase boundary during indentation was emphasized through crack propagation paths, and optimization of alumina–YSZ adaptation through component design and SL processing was expected.
Keywords: additive manufacturing; stereolithography; zirconia-toughened alumina; nanoindentation; microcracking additive manufacturing; stereolithography; zirconia-toughened alumina; nanoindentation; microcracking

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MDPI and ACS Style

Li, W.; Liu, W.; Li, M.; Nie, J.; Chen, Y.; Xing, Z. Nanoscale Plasticity Behavior of Additive-Manufactured Zirconia-Toughened Alumina Ceramics during Nanoindentation. Materials 2020, 13, 1006. https://doi.org/10.3390/ma13041006

AMA Style

Li W, Liu W, Li M, Nie J, Chen Y, Xing Z. Nanoscale Plasticity Behavior of Additive-Manufactured Zirconia-Toughened Alumina Ceramics during Nanoindentation. Materials. 2020; 13(4):1006. https://doi.org/10.3390/ma13041006

Chicago/Turabian Style

Li, Wenli, Weiwei Liu, Maoshan Li, Jianbin Nie, Yao Chen, and Zhanwen Xing. 2020. "Nanoscale Plasticity Behavior of Additive-Manufactured Zirconia-Toughened Alumina Ceramics during Nanoindentation" Materials 13, no. 4: 1006. https://doi.org/10.3390/ma13041006

APA Style

Li, W., Liu, W., Li, M., Nie, J., Chen, Y., & Xing, Z. (2020). Nanoscale Plasticity Behavior of Additive-Manufactured Zirconia-Toughened Alumina Ceramics during Nanoindentation. Materials, 13(4), 1006. https://doi.org/10.3390/ma13041006

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