Anisotropy and Deformation Mechanisms of As-Extruded Mg-3Zn-1Y Magnesium Alloy Under High Strain Rates

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	Anisotropy and Deformation Mechanisms of As-Extruded Mg-3Zn-1Y Magnesium Alloy Under High Strain Rates
其他题名	Anisotropy and Deformation Mechanisms of As-Extruded Mg-3Zn-1Y Magnesium Alloy Under High Strain Rates
	Li Xudong; Mao Pingli; Liu Yanyu; Liu Zheng; Wang Zhi; Wang Feng
	2018
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	54 期号:4 页码:557-565
摘要	As a very important design principle, the dynamic properties of materials attracted extensive attention in resent years and a bunch of works have been done concerning with the materials deformation behaviors under high strain rates. However, the dynamic behaviors of magnesium alloys are not through understood, especially the rare earth based magnesium alloys. In order to investigate the dynamic and anisotropic behavior under high strain rates deformation of as-extruded Mg-3Zn-1Y magnesium alloy, the split Hopkinson pressure bar (SHPB) apparatus was used to testing the true stress-true strain curves under the high strain rates of 1000, 1500 and 2200 s(-1) of as-extruded Mg-3Zn-1Y magnesium alloy. The OM and SEM were used to analysis the micorstructure evolution and fracture surface morphology of the alloy. The true reason behind the anisotropic phenomenon was revealed based on the deformation mechanism of highly basal-textured magnesium alloy. The results demonstrate that the as-extruded Mg-3Zn-1Y magnesium alloy exhibits pronounced anisotropy during compression according to the loading direction. The anisotropy of the as-extruded Mg-3Zn-1Y magnesium alloy are arised from the variety of the deformation mechanisms. When the loading direction is along extrusion direction, the predominant deformation mode changes from extension twinning at a lower strain to prismatic slip at a higher strain. While compressed along extrusion radial direction (ERD), the predominant deformation mode changes from contraction twinning to a coordination of basal and second order pyramidal slip with the increasing of strain.
关键词	MG-3AL-1ZN ALLOY PLASTIC-DEFORMATION YIELD ASYMMETRY GRAIN-SIZE TEXTURE COMPRESSION BEHAVIOR TEMPERATURE DUCTILITY SHEETS magnesium alloy anisotropy high strain rate deformation mechanism
收录类别	CSCD
语种	英语
资助项目	[Science and Technology Project of Shenyang]
CSCD记录号	CSCD:6229045
引用统计	被引频次：3[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/153566
专题	中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Li Xudong,Mao Pingli,Liu Yanyu,et al. Anisotropy and Deformation Mechanisms of As-Extruded Mg-3Zn-1Y Magnesium Alloy Under High Strain Rates[J]. ACTA METALLURGICA SINICA,2018,54(4):557-565.
APA	Li Xudong,Mao Pingli,Liu Yanyu,Liu Zheng,Wang Zhi,&Wang Feng.(2018).Anisotropy and Deformation Mechanisms of As-Extruded Mg-3Zn-1Y Magnesium Alloy Under High Strain Rates.ACTA METALLURGICA SINICA,54(4),557-565.
MLA	Li Xudong,et al."Anisotropy and Deformation Mechanisms of As-Extruded Mg-3Zn-1Y Magnesium Alloy Under High Strain Rates".ACTA METALLURGICA SINICA 54.4(2018):557-565.