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-Li 1; Yuan, Li-Tao 1; Li, Yuan-Dong 1; Jiang, Jing 1; Han, Yu-Xiang 1; Jiang, Chun-Hong 2; Ma, Ying 1
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2018-02-01
卷号	28 期号:2 页码:241-248
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
ISSN号	10040609
DOI	10.19476/j.ysxb.1004.0609.2018.02.04
英文摘要	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.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://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
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.