Microstructures and age-hardening behavior of extruded Mg-Dy-Cu alloy sheet

doi:10.19476/j.ysxb.1004.0609.2018.02.04

	Microstructures and age-hardening behavior of extruded Mg-Dy-Cu alloy sheet
	Bi, Guang-Li1 ; Yuan, Li-Tao 1; Li, Yuan-Dong1 ; Jiang, Jing1 ; Han, Yu-Xiang 1; Jiang, Chun-Hong 2; Ma, Ying1
	2018-02-01
发表期刊	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
ISSN	10040609
卷号	28 期号:2 页码:241-248
摘要	The microstructure and age-hardening behavior of an extruded Mg-2Dy-0.5Cu (mole fraction, %) alloy sheet were investigated by X-ray diffractometer, optical microscopy, scanning electron microscopy, transmission electron microscopy and microlardness tester. The microstructures of the as-cast alloy mainly consist of α-Mg dendrites, the 18R-long period stacking ordered (LPSO) phase distributes among α-Mg dendrites and a small number of MgDy3 particle phases. After extrusion, dynamic recrystallization (DRX) occurs and fine microstructure is obtained during extrusion. Some coarse 18R-LPSO phases are crushed and distributed along the hot extrusion direction. Moreover, few fine lamellar 14H-LPSO phases precipitate in DRX α-Mg grains. With the increase of aging time, the volume fraction of 14H-LPSO phase gradually increases and the phases coarsen, the hardness of the alloy increases and reaches a peak at 72 h, which is mainly attributed to the precipitation strengthening of the high volume fraction of 14H-LPSO phase. © 2018, Science Press. All right reserved.
关键词	Age hardening Binary alloys Copper alloys Dendrites (metallography) Dynamic recrystallization Dysprosium alloys Extrusion Hardening High resolution transmission electron microscopy Precipitation (chemical) Scanning electron microscopy Ternary alloys Volume fraction Age hardening behaviors Aging behavior Cu alloy Dynamic recrystallization (DRX) Long-period stacking ordered phase (LPSO) Lpso phase Precipitation strengthening X ray diffractometers
DOI	10.19476/j.ysxb.1004.0609.2018.02.04
收录类别	EI
语种	中文
出版者	Central South University of Technology
EI入藏号	20183505744935
EI主题词	Magnesium alloys
EI分类号	531 Metallurgy and Metallography - 537.1 Heat Treatment Processes - 542.2 Magnesium and Alloys - 544.2 Copper Alloys - 547.2 Rare Earth Metals - 641.1 Thermodynamics - 741.3 Optical Devices and Systems - 802.3 Chemical Operations - 951 Materials Science
来源库	Compendex
分类代码	531 Metallurgy and Metallography - 537.1 Heat Treatment Processes - 542.2 Magnesium and Alloys - 544.2 Copper Alloys - 547.2 Rare Earth Metals - 641.1 Thermodynamics - 741.3 Optical Devices and Systems - 802.3 Chemical Operations - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114420
专题	材料科学与工程学院
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 2.Lanshi Foundry Co., Ltd., Lanzhou; 730050, China
第一作者单位	材料科学与工程学院
第一作者的第一单位	材料科学与工程学院
推荐引用方式 GB/T 7714	Bi, Guang-Li,Yuan, Li-Tao,Li, Yuan-Dong,et al. Microstructures and age-hardening behavior of extruded Mg-Dy-Cu alloy sheet[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2018,28(2):241-248.
APA	Bi, Guang-Li.,Yuan, Li-Tao.,Li, Yuan-Dong.,Jiang, Jing.,Han, Yu-Xiang.,...&Ma, Ying.(2018).Microstructures and age-hardening behavior of extruded Mg-Dy-Cu alloy sheet.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,28(2),241-248.
MLA	Bi, Guang-Li,et al."Microstructures and age-hardening behavior of extruded Mg-Dy-Cu alloy sheet".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 28.2(2018):241-248.