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 | |
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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