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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
ISSN1996-1944
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
DOI10.3390/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
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
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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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