Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement

In this article, Y2O3-reinforced tungsten composites are fabricated by using an improved wet chemical method combined with the spark plasma sintering (SPS). Triethanolamine (TEA) surfactant addition and an appropriate calcination process are innovatively introduced into this wet chemical method. The...

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Autores principales:	Gang Yao, Xuepeng Liu, Zhihao Zhao, Laima Luo, Jigui Cheng, Xiang Zan, Zumin Wang, Qiu Xu, Yucheng Wu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	W-Y2O3 composites Powder process improvement nano-sized Y2O3 Mechanical properties Helium ion irradiation Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/e5291d9bdb5c4edfa0b09e989ff635ea
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spelling	oai:doaj.org-article:e5291d9bdb5c4edfa0b09e989ff635ea2021-11-20T04:55:44ZExcellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement0264-127510.1016/j.matdes.2021.110249https://doaj.org/article/e5291d9bdb5c4edfa0b09e989ff635ea2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521008042https://doaj.org/toc/0264-1275In this article, Y2O3-reinforced tungsten composites are fabricated by using an improved wet chemical method combined with the spark plasma sintering (SPS). Triethanolamine (TEA) surfactant addition and an appropriate calcination process are innovatively introduced into this wet chemical method. The results show that ultrafine composite powders with nano-sized Y2O3 dispersions in the tungsten matrix can be obtained through the improved wet chemical method. Using the SPS, the average sizes of Y2O3 particles within tungsten grains and at grain boundaries are identified to be 13.5 and 50 nm, respectively. It is found that the phase interface between W and Y2O3 is a typical semicoherent interface. We observe that the W-Y2O3 composites possess superior mechanical properties compared with the pure tungsten counterparts. The results inferred from atomistic simulations reveal that the added Y2O3 particles can effectively pin the dislocation and impede the dislocation movement, thus enhancing the mechanical performances of W-Y2O3 composites. In addition, the addition of Y2O3 particles is also able to improve the helium ion irradiation resistance of tungsten-based composites. This study is expected to provide a certain reference for the manufacture of large-sized tungsten-based materials.Gang YaoXuepeng LiuZhihao ZhaoLaima LuoJigui ChengXiang ZanZumin WangQiu XuYucheng WuElsevierarticleW-Y2O3 compositesPowder process improvementnano-sized Y2O3Mechanical propertiesHelium ion irradiationMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110249- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	W-Y2O3 composites Powder process improvement nano-sized Y2O3 Mechanical properties Helium ion irradiation Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	W-Y2O3 composites Powder process improvement nano-sized Y2O3 Mechanical properties Helium ion irradiation Materials of engineering and construction. Mechanics of materials TA401-492 Gang Yao Xuepeng Liu Zhihao Zhao Laima Luo Jigui Cheng Xiang Zan Zumin Wang Qiu Xu Yucheng Wu Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement
description	In this article, Y2O3-reinforced tungsten composites are fabricated by using an improved wet chemical method combined with the spark plasma sintering (SPS). Triethanolamine (TEA) surfactant addition and an appropriate calcination process are innovatively introduced into this wet chemical method. The results show that ultrafine composite powders with nano-sized Y2O3 dispersions in the tungsten matrix can be obtained through the improved wet chemical method. Using the SPS, the average sizes of Y2O3 particles within tungsten grains and at grain boundaries are identified to be 13.5 and 50 nm, respectively. It is found that the phase interface between W and Y2O3 is a typical semicoherent interface. We observe that the W-Y2O3 composites possess superior mechanical properties compared with the pure tungsten counterparts. The results inferred from atomistic simulations reveal that the added Y2O3 particles can effectively pin the dislocation and impede the dislocation movement, thus enhancing the mechanical performances of W-Y2O3 composites. In addition, the addition of Y2O3 particles is also able to improve the helium ion irradiation resistance of tungsten-based composites. This study is expected to provide a certain reference for the manufacture of large-sized tungsten-based materials.
format	article
author	Gang Yao Xuepeng Liu Zhihao Zhao Laima Luo Jigui Cheng Xiang Zan Zumin Wang Qiu Xu Yucheng Wu
author_facet	Gang Yao Xuepeng Liu Zhihao Zhao Laima Luo Jigui Cheng Xiang Zan Zumin Wang Qiu Xu Yucheng Wu
author_sort	Gang Yao
title	Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement
title_short	Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement
title_full	Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement
title_fullStr	Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement
title_full_unstemmed	Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement
title_sort	excellent performance of w–y2o3 composite via powder process improvement and y2o3 refinement
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/e5291d9bdb5c4edfa0b09e989ff635ea
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_version_	1718419747496787968

Excellent performance of W–Y2O3 composite via powder process improvement and Y2O3 refinement

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