Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment

Abstract A nanostructured laminar W-La2O3 alloy (WL10) with improved ductility was prepared using a surface mechanical attrition treatment (SMAT). φ1.5 mm ZrO2 WL10 balls subjected to SMAT (called φ1.5 mm ZrO2 ball SMATed WL10) samples possess the best surface profile and excellent integrated mechan...

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Autores principales:	Hong-Yan Guo, Min Xia, Lap-Chung Chan, Kun Wang, Xiao-Xin Zhang, Qing-Zhi Yan, Man-Chao He, Jian Lu, Chang-Chun Ge
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/114dfc8782aa4e11b22ed3357674a895
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spelling	oai:doaj.org-article:114dfc8782aa4e11b22ed3357674a8952021-12-02T16:06:52ZNanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment10.1038/s41598-017-01458-02045-2322https://doaj.org/article/114dfc8782aa4e11b22ed3357674a8952017-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-01458-0https://doaj.org/toc/2045-2322Abstract A nanostructured laminar W-La2O3 alloy (WL10) with improved ductility was prepared using a surface mechanical attrition treatment (SMAT). φ1.5 mm ZrO2 WL10 balls subjected to SMAT (called φ1.5 mm ZrO2 ball SMATed WL10) samples possess the best surface profile and excellent integrated mechanical properties (the ductile-brittle transition temperature (DBTT) value decreases by approximately 200 °C, and the bending strength decreases by 100 Mpa). A highly dense group of laminates was detected near the surface of the φ1.5 mm ZrO2 ball SMATed WL10 sample. The SMATed WL10 laminates were composed of a micro-grain layer, an ultrafine-grain layer and a nanosized-grain layer. The nanostructured laminar surface layer of the φ1.5 mm ZrO2 ball SMATed WL10 sample is approximately 1–2 μm. The top surface of the WL10 plates with and without the SMAT process possesses residual compressive stress of approximately −883 MPa and −241 MPa, respectively, in the y direction and −859 MPa and −854 MPa, respectively, in the x direction. The SMAT process could be a complementary method to further improve the toughness of tungsten-based materials.Hong-Yan GuoMin XiaLap-Chung ChanKun WangXiao-Xin ZhangQing-Zhi YanMan-Chao HeJian LuChang-Chun GeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hong-Yan Guo Min Xia Lap-Chung Chan Kun Wang Xiao-Xin Zhang Qing-Zhi Yan Man-Chao He Jian Lu Chang-Chun Ge Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment
description	Abstract A nanostructured laminar W-La2O3 alloy (WL10) with improved ductility was prepared using a surface mechanical attrition treatment (SMAT). φ1.5 mm ZrO2 WL10 balls subjected to SMAT (called φ1.5 mm ZrO2 ball SMATed WL10) samples possess the best surface profile and excellent integrated mechanical properties (the ductile-brittle transition temperature (DBTT) value decreases by approximately 200 °C, and the bending strength decreases by 100 Mpa). A highly dense group of laminates was detected near the surface of the φ1.5 mm ZrO2 ball SMATed WL10 sample. The SMATed WL10 laminates were composed of a micro-grain layer, an ultrafine-grain layer and a nanosized-grain layer. The nanostructured laminar surface layer of the φ1.5 mm ZrO2 ball SMATed WL10 sample is approximately 1–2 μm. The top surface of the WL10 plates with and without the SMAT process possesses residual compressive stress of approximately −883 MPa and −241 MPa, respectively, in the y direction and −859 MPa and −854 MPa, respectively, in the x direction. The SMAT process could be a complementary method to further improve the toughness of tungsten-based materials.
format	article
author	Hong-Yan Guo Min Xia Lap-Chung Chan Kun Wang Xiao-Xin Zhang Qing-Zhi Yan Man-Chao He Jian Lu Chang-Chun Ge
author_facet	Hong-Yan Guo Min Xia Lap-Chung Chan Kun Wang Xiao-Xin Zhang Qing-Zhi Yan Man-Chao He Jian Lu Chang-Chun Ge
author_sort	Hong-Yan Guo
title	Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment
title_short	Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment
title_full	Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment
title_fullStr	Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment
title_full_unstemmed	Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment
title_sort	nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/114dfc8782aa4e11b22ed3357674a895
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_version_	1718384823471439872

Nanostructured laminar tungsten alloy with improved ductility by surface mechanical attrition treatment

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