Grain Refinement and Aging Hardening of the Mg-10Gd-3Y-2Ag-0.4Zr Alloy Produced by a Two-Step Forming Process

doi:10.3390/ma11050757

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	Grain Refinement and Aging Hardening of the Mg-10Gd-3Y-2Ag-0.4Zr Alloy Produced by a Two-Step Forming Process
	Ning HY; Yu YD; Gao B; Xiao LR; Wen LH; Yan ZH; Li L; Chen XF
发表期刊	MATERIALS
	2018-05-01
卷号	11 期号:5
ISSN	1996-1944
摘要	Grain refinement and precipitation are two effective ways to improve the mechanical properties of Mg-RE alloys. In this work, a two-step forming process is proposed. This includes cold rolling and subsequent annealing at high temperature for a short duration. By the two-step forming process, grains can be refined from 100 mu m to 20 mu m in compare with similar to 30 mu m by common hot rolling at 450 degrees C for a reduction of 80%. The sample shows more distinct aging hardening, as the hardness amplification of 60 HV is twice that of the hot-rolled sample. The precipitation is observed by high angle annular dark field-scanning transmission electron microscopy (HAADF-STEM). Dynamic precipitation in the sample by the two-step route is found to be effectively suppressed. Interestingly, after subsequent annealing, the density of precipitation, especially beta', become much higher than that in hot-rolled samples.
关键词	Mg-gd-y-ag-zr Alloy Rolling Thermal Treatment Microstructure Mechanical Property
DOI	10.3390/ma11050757
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000434711700107
关键词[WOS]	Y-ZR ALLOY ; MECHANICAL-PROPERTIES ; MAGNESIUM ALLOYS ; HIGH-STRENGTH ; DYNAMIC PRECIPITATION ; MG-8.5GD-2.3Y-1.8AG-0.4ZR ALLOY ; DEFORMATION-BEHAVIOR ; HOT COMPRESSION ; AG ADDITION ; GD ALLOYS
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
项目资助者	National Natural Science Foundation of China(51601003) ; Natural Science Foundation of Heilongjiang Province of China(QC2017061) ; Harbin Science and Technology Bureau(2017RAQXJ066) ; Science Foundation for Young Scientists of Jiangsu, China(BK20140779)
论文分区	二类
力学所作者排名	1
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/77512
专题	非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Ning HY,Yu YD,Gao B,et al. Grain Refinement and Aging Hardening of the Mg-10Gd-3Y-2Ag-0.4Zr Alloy Produced by a Two-Step Forming Process[J]. MATERIALS,2018,11,5,.
APA	Ning HY.,Yu YD.,Gao B.,Xiao LR.,Wen LH.,...&Chen XF.(2018).Grain Refinement and Aging Hardening of the Mg-10Gd-3Y-2Ag-0.4Zr Alloy Produced by a Two-Step Forming Process.MATERIALS,11(5).
MLA	Ning HY,et al."Grain Refinement and Aging Hardening of the Mg-10Gd-3Y-2Ag-0.4Zr Alloy Produced by a Two-Step Forming Process".MATERIALS 11.5(2018).

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