Superplastic nanocrystalline ceramics at room temperature and high strain rates

被引：25

作者：

Zhang, J. Y. ^{[1
]}

Sha, Z. D. ^{[1
]}

Branicio, P. S. ^{[1
]}

Zhang, Y. W. ^{[1
]}

Sorkin, V. ^{[1
]}

Pei, Q. X. ^{[1
]}

Srolovitz, D. J. ^{[2
,3
]}

机构：

[1] Agcy Sci Technol & Res, Inst High Performance Comp, Singapore 138632, Singapore

[2] Univ Penn, Dept Mat Sci & Engn, Philadelphia, PA 19104 USA

[3] Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA

来源：

SCRIPTA MATERIALIA | 2013年 / 69卷 / 07期

关键词：

Nanostructured ceramics; Superplasticity; High strain rates; Grain size effect; Silicon carbide; SIC NANOWIRES; MOLECULAR-DYNAMICS; PLASTIC-FLOW; DIFFUSION; DUCTILITY; CARBIDE; CREEP;

D O I：

10.1016/j.scriptamat.2013.06.017

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tensile-loading molecular dynamics simulations show that nanocrystalline SiC not only becomes ductile, but can be superplastically deformed at room temperature when grain sizes are reduced to d similar to 2 nm. The calculated strain rate sensitivity, 0.67, implies a superplastic ceramic able to attain strains of up to 1000% at room temperature and typical strain rates (similar to 10(-2) s(-1)). The origin of the superplasticity is linked to an unusually steep rise in creep rate to 10(6) s(-1) for d = 2 nm. The results explain recent observations in SiC nanowires and suggest novel opportunities for structural ceramics. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：525 / 528

页数：4

共 50 条

[41] Recent achievements in developing low temperature and high strain rate superplastic materials
Huang, J.C.
Journal of Materials Science and Technology, 2001, 17 (01): : 19 - 20
[42] Effect of temperature and strain rate on the superplastic behaviour of high-carbon steel
Moshksar, MM
Rad, EM
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 1998, 83 (1-3) : 115 - 120
[43] Study of a superplastic forming titanium alloy at low temperature and high strain rate
Zhang, Jinxu
Ge, Honglin
Cheng, Xiaoying
Wang, Xiaoying
Xu, Jialong
Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 2000, 29 (02): : 105 - 108
[44] The study on high temperature conductivity of nanocrystalline BaTiO3 ceramics
Kang, Aiguo
Li, Longtu
Deng, Xiangyun
Wang, Xiaohui
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 132 (03): : 288 - 291
[45] Grain boundaries in dense nanocrystalline ceria ceramics: exclusive pathways for proton conduction at room temperature
Avila-Paredes, Hugo J.
Chen, Chien-Ting
Wang, Shizhong
De Souza, Roger A.
Martin, Manfred
Munir, Zuhair
Kim, Sangtae
JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (45) : 10110 - 10112
[46] Transparent nanocrystalline spinel by room temperature high-pressure compaction
Wollmershauser, J. A.
Feigelson, B. N.
Qadri, S. B.
Villalobos, G. R.
Hunt, M.
Imam, M. A.
Sanghera, J. S.
SCRIPTA MATERIALIA, 2013, 69 (04) : 334 - 337
[47] High mobility nanocrystalline indium zinc oxide deposited at room temperature
Fortunato, E
Pimentel, A
Gonçalves, A
Marques, A
Martins, R
INTEGRATION OF ADVANCED MICRO-AND NANOELECTRONIC DEVICES-CRITICAL ISSUES AND SOLUTIONS, 2004, 811 : 437 - 442
[48] Localized superplastic deformation of nanocrystalline 3Y-TZP ceramics under cyclic tensile fatigue at ambient temperature
Yan, DS
Zheng, YS
Gao, L
Zhu, CF
Wang, XW
Bai, CL
Xu, L
Li, MQ
JOURNAL OF MATERIALS SCIENCE, 1998, 33 (10) : 2719 - 2723
[49] Nanocrystalline boehmite obtained at room temperature
Milanovic, Marija
Obrenovic, Zoran
Stijepovic, Ivan
Nikolic, Ljubica M.
CERAMICS INTERNATIONAL, 2018, 44 (11) : 12917 - 12920
[50] The fabrication of nanocrystalline BaTiO3 ceramics under high temperature and high pressure
Xiao, C. J.
Jin, C. Q.
Wang, X. H.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2009, 209 (04) : 2033 - 2037

← 1 2 3 4 5 →