Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature

We report here experimental results of yield strength and stress relaxation measurements of transparent MgAl(2)O(4) nano-ceramics at high pressure and temperature. During compression at ambient temperature, the differential strain deduced from peak broadening increased significantly with pressure up...

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Detalles Bibliográficos
Autores principales: Zhang, Jie, Lu, Tiecheng, Chang, Xianghui, Jiang, Shengli, Wei, Nian, Qi, Jianqi
Formato: Texto
Lenguaje:English
Publicado: Springer 2010
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2897033/
https://www.ncbi.nlm.nih.gov/pubmed/20676198
http://dx.doi.org/10.1007/s11671-010-9647-5
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author Zhang, Jie
Lu, Tiecheng
Chang, Xianghui
Jiang, Shengli
Wei, Nian
Qi, Jianqi
author_facet Zhang, Jie
Lu, Tiecheng
Chang, Xianghui
Jiang, Shengli
Wei, Nian
Qi, Jianqi
author_sort Zhang, Jie
collection PubMed
description We report here experimental results of yield strength and stress relaxation measurements of transparent MgAl(2)O(4) nano-ceramics at high pressure and temperature. During compression at ambient temperature, the differential strain deduced from peak broadening increased significantly with pressure up to 2 GPa, with no clear indication of strain saturation. However, by then, warming the sample above 400°C under 4 GPa, stress relaxation was obviously observed, and all subsequent plastic deformation cycles are characterized again by peak broadening. Our results reveal a remarkable reduction in yield strength as the sintering temperature increases from 400 to 900°C. The low temperature for the onset of stress relaxation has attracted attention regarding the performance of transparent MgAl(2)O(4) nano-ceramics as an engineering material.
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spelling pubmed-28970332010-07-29 Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature Zhang, Jie Lu, Tiecheng Chang, Xianghui Jiang, Shengli Wei, Nian Qi, Jianqi Nanoscale Res Lett Nano Express We report here experimental results of yield strength and stress relaxation measurements of transparent MgAl(2)O(4) nano-ceramics at high pressure and temperature. During compression at ambient temperature, the differential strain deduced from peak broadening increased significantly with pressure up to 2 GPa, with no clear indication of strain saturation. However, by then, warming the sample above 400°C under 4 GPa, stress relaxation was obviously observed, and all subsequent plastic deformation cycles are characterized again by peak broadening. Our results reveal a remarkable reduction in yield strength as the sintering temperature increases from 400 to 900°C. The low temperature for the onset of stress relaxation has attracted attention regarding the performance of transparent MgAl(2)O(4) nano-ceramics as an engineering material. Springer 2010-05-23 /pmc/articles/PMC2897033/ /pubmed/20676198 http://dx.doi.org/10.1007/s11671-010-9647-5 Text en Copyright © 2010 The Author(s) https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Nano Express
Zhang, Jie
Lu, Tiecheng
Chang, Xianghui
Jiang, Shengli
Wei, Nian
Qi, Jianqi
Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature
title Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature
title_full Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature
title_fullStr Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature
title_full_unstemmed Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature
title_short Yield Strength of Transparent MgAl(2)O(4) Nano-Ceramic at High Pressure and Temperature
title_sort yield strength of transparent mgal(2)o(4) nano-ceramic at high pressure and temperature
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2897033/
https://www.ncbi.nlm.nih.gov/pubmed/20676198
http://dx.doi.org/10.1007/s11671-010-9647-5
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AT lutiecheng yieldstrengthoftransparentmgal2o4nanoceramicathighpressureandtemperature
AT changxianghui yieldstrengthoftransparentmgal2o4nanoceramicathighpressureandtemperature
AT jiangshengli yieldstrengthoftransparentmgal2o4nanoceramicathighpressureandtemperature
AT weinian yieldstrengthoftransparentmgal2o4nanoceramicathighpressureandtemperature
AT qijianqi yieldstrengthoftransparentmgal2o4nanoceramicathighpressureandtemperature

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