The mechanism for the different effects of texture on yield strength and hardness of Mg alloys

Abstract A study regarding the effect of texture on tensile yield strength and hardness of an extruded Mg-15Gd-0.5Zr rod was performed, with a great emphasis laid on the relevant mechanisms. A 7% pre-tension along the extrusion direction (ED) in the solid solution condition was used to transform the...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Feilong Guo, Huihui Yu, Chenyu Wu, Yunchang Xin, Cong He, Qing Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d53de9b137f8466a9e7681e111115cde
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:d53de9b137f8466a9e7681e111115cde
record_format	dspace
spelling	oai:doaj.org-article:d53de9b137f8466a9e7681e111115cde2021-12-02T11:53:02ZThe mechanism for the different effects of texture on yield strength and hardness of Mg alloys10.1038/s41598-017-08966-z2045-2322https://doaj.org/article/d53de9b137f8466a9e7681e111115cde2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08966-zhttps://doaj.org/toc/2045-2322Abstract A study regarding the effect of texture on tensile yield strength and hardness of an extruded Mg-15Gd-0.5Zr rod was performed, with a great emphasis laid on the relevant mechanisms. A 7% pre-tension along the extrusion direction (ED) in the solid solution condition was used to transform the texture from a broad distribution of basal poles with a peak approximately 45° with respect to the ED into a texture with basal poles largely perpendicular to the ED. This texture variation enhances the yield strength of peak aged sample by approximately 103 MPa, while hardly increases the peak hardness. The analysis about the ratio of the critical resolved shear stress (CRSS) to Schmid factor shows that this texture variation results in a larger fraction of grains favoring prismatic slip with a higher activation stress under tension along the ED. In contrast, the complex stress state during hardness test initiates multiple deformation modes, which renders the value of hardness insensitive to the texture variation. This different dependence of deformation modes on texture mainly accounts for the different increments in hardness and tensile yield strength.Feilong GuoHuihui YuChenyu WuYunchang XinCong HeQing LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Feilong Guo Huihui Yu Chenyu Wu Yunchang Xin Cong He Qing Liu The mechanism for the different effects of texture on yield strength and hardness of Mg alloys
description	Abstract A study regarding the effect of texture on tensile yield strength and hardness of an extruded Mg-15Gd-0.5Zr rod was performed, with a great emphasis laid on the relevant mechanisms. A 7% pre-tension along the extrusion direction (ED) in the solid solution condition was used to transform the texture from a broad distribution of basal poles with a peak approximately 45° with respect to the ED into a texture with basal poles largely perpendicular to the ED. This texture variation enhances the yield strength of peak aged sample by approximately 103 MPa, while hardly increases the peak hardness. The analysis about the ratio of the critical resolved shear stress (CRSS) to Schmid factor shows that this texture variation results in a larger fraction of grains favoring prismatic slip with a higher activation stress under tension along the ED. In contrast, the complex stress state during hardness test initiates multiple deformation modes, which renders the value of hardness insensitive to the texture variation. This different dependence of deformation modes on texture mainly accounts for the different increments in hardness and tensile yield strength.
format	article
author	Feilong Guo Huihui Yu Chenyu Wu Yunchang Xin Cong He Qing Liu
author_facet	Feilong Guo Huihui Yu Chenyu Wu Yunchang Xin Cong He Qing Liu
author_sort	Feilong Guo
title	The mechanism for the different effects of texture on yield strength and hardness of Mg alloys
title_short	The mechanism for the different effects of texture on yield strength and hardness of Mg alloys
title_full	The mechanism for the different effects of texture on yield strength and hardness of Mg alloys
title_fullStr	The mechanism for the different effects of texture on yield strength and hardness of Mg alloys
title_full_unstemmed	The mechanism for the different effects of texture on yield strength and hardness of Mg alloys
title_sort	mechanism for the different effects of texture on yield strength and hardness of mg alloys
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/d53de9b137f8466a9e7681e111115cde
work_keys_str_mv	AT feilongguo themechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT huihuiyu themechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT chenyuwu themechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT yunchangxin themechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT conghe themechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT qingliu themechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT feilongguo mechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT huihuiyu mechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT chenyuwu mechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT yunchangxin mechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT conghe mechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys AT qingliu mechanismforthedifferenteffectsoftextureonyieldstrengthandhardnessofmgalloys
_version_	1718394896439574528

The mechanism for the different effects of texture on yield strength and hardness of Mg alloys

Ejemplares similares