挤压温度对AZT802镁合金组织和性能的影响*

doi:10.11896/j.issn.1005-023X.2017.022.019

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Abstract Extrusion of as-cast AZT802 alloy was performed in the temperature of 350 ℃, 380 ℃ and 400 ℃, and then the extruded alloys were given T5 aging treatment. The effects of extrusion temperature on microstructure and mechanical properties of extruded and aged AZT802 alloy were investigated. It was found that fine equiaxed grains were obtained in alloys extruded at higher extrusion temperature. With the extrusion temperature decreasing to 350 ℃, the distribution of grain size was nonuniform. The volumes of the second phases decrease with the extrusion temperature increasing. Moreover, the particle second phases distribute along the grain boundaries homogeneously at higher extrusion temperature. While large band-shaped precipitation was observed in the alloy extruded at 350 ℃. After T5 aging treatment, Mg2Sn particles distribute homogeneously. Both continuous and discontinuous Mg17Al12 phases were observed. The volume fraction of discontinuous Mg17Al12 phase increased with the extrusion temperature rising. The AZT802 alloy extruded at 380 ℃ and aged at 175 ℃ for 3 h possessed the best mechanical properties.

Key words： magnesium alloy extrusion temperature microstructure mechanical properties

Published: 08 May 2018

CLC number:

TG376.2

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	Articles by authors
	FAN Xiaowei
	ZHANG Dingfei
	FENG Jingkai
	JIANG Luyao
	XU Junyao
	PAN Fusheng

Cite this article:

FAN Xiaowei,ZHANG Dingfei,FENG Jingkai, et al. Properties of AZT802 Magnesium Alloy[J]. Materials Reports, 2017, 31(22): 95-99.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.022.019 OR http://www.mater-rep.com/EN/Y2017/V31/I22/95

1 Polmear I J. Magnesium alloys and applications[J]. Mater Sci Technol, 1994,10:1.
2 Kulekci M K. Magnesium and its alloys applications in automotive industry[J]. Int J Ad Manuf Technol, 2008,39(9-10):851.
3 Mordike B L, Ebert T. Magnesium properties applications potential[J]. Mater Sci Eng A, 2001,302:37.
4 Yakubtsov I A, Diak B J, Sager C A, et al. Effects of heat treatment on microstructure and tensile deformation of Mg AZ80 alloy at room temperature[J]. Mater Sci Eng A, 2008,496(1-2):247.
5 Chen Jihua, Chen Zhenhua, Yan Hongge, et al. Effects of Sn addition on microstructure and mechanical properties of Mg-Zn-Al alloys[J]. J Alloys Compd, 2008,461(1-2):209.
6 Zarandi F, Seale G,Verma R, et al. Effect of Al and Mn additions on rolling and deformation behavior of AZ series magnesium alloys[J]. Mater Sci Eng A, 2008,496(1-2):159.
7 Fan Caihe, Chen Gang, Yan Hongge, et al. Effect of rare earth in magnesium and magnesium alloy[J]. Mater Rev, 2005,19(7):61(in Chinese).
范才河,陈刚,严红革,等. 稀土在镁及镁合金中的作用[J]. 材料导报, 2005,19(7):61.
8 Jiang Feng, Zhang Xiyan, Qi Linlin, et al. The latest research progress on alloying of Mg-based materials[J]. Mater Rev, 2004,18(2):45(in Chinese).
姜锋,张喜燕,齐琳琳,等. 镁基材料合金化研究最新进展[J]. 材料导报, 2004,18(2):45.
9 Wang Ruiquan, Zhang Dahua. Influence of plumbum on microstructure and mechanical properties of AZ91 magnesium alloy[J]. Nonferrous Metals Processing, 2009,38(5):4(in Chinese).
王瑞权,张大华. Pb对AZ91镁合金铸态显微组织及力学性能的影响[J]. 有色金属加工, 2009,38(5):4.
10 Candan S, Unal M, Koc E, et al. Effects of titanium addition on mechanical and corrosion behaviours of AZ91 magnesium alloy[J]. J Alloys Compd, 2011,509(5):1958.
11 Dong Xuguang, Fu Junwei, Wang Jing, et al. Microstructure and tensile properties of as-cast and as-aged Mg-6Al-4Zn alloys with Sn addition[J]. Mater Des, 2013,51:567.
12 Liu Guojun, Dong Jie, Rong Jian. Research progress of Mg-5Sn series magnesium alloys[J]. Hot Working Technol, 2015,44(14):33(in Chinese).
刘国军,董洁,荣建. Mg-5Sn系镁合金研究进展[J]. 热加工工艺, 2015,44(14):33.
13 Jiang L, Zhang D, Dong Y, et al. Microstructure and tensile properties of as extruded and as aged Mg-Al-Zn-Mn-Sn alloy[J]. Mater Sci Technol, 2015, 31(9):1088.
14 Liu Qing. Research progress on plastic deformation mechanical of Mg alloys[J]. Acta Metall Sin, 2010,46(11):1458(in Chinese).
刘庆. 镁合金塑性变形机理研究进展[J]. 金属学报, 2010,46(11):1458.
15 Ren Lingbao, Wu Jing, Quan Gaofeng. Plastic behavior of AZ80 alloy during low strain rate tension at elevated temperature[J]. Mater Sci Eng A, 2014,612:278.
16 Wang Lifei, Mostaed E, Cao Xiaoqing, et al. Effects of texture and grain size on mechanical properties of AZ80 magnesium alloys at lower temperatures[J]. Mater Des, 2016,89:1.
17 Wang Yufan, Zhang Yingbo, Li Ningkang, et al. Effect of extrusion ratio on microstructures and mechanical properties of Mg-Zn-Y alloys[J]. Mater Rev:Res, 2016,30(8):74.
汪煜凡, 张英波,李宁康,等. 挤压比对Mg-Zn-Y合金微观组织和力学性能的影响[J]. 材料导报, 2016,30(8):74.
18 Shahzad M, Wagner L. Influence of extrusion parameters on microstructure and texture developments and their effects on mechanical properties of the magnesium alloy AZ80[J]. Mater Sci Eng A, 2009,506(1-2):141.
19 Allameh S H, Emamy M, Maleki E, et al. Effect of microstructural refinement on tensile properties of AZ80 magnesium alloy via Ca addition and extrusion process[J]. Procedia Mater Sci, 2015,11:89.
20 佘加. Mg-Al-Sn-Mn系镁合金显微组织与力学性能的研究[D]. 重庆:重庆大学, 2015.
21 Celotto S, Bastow T J. Study of precipitation in aged binary Mg-Al and ternary Mg-Al-Zn alloys using27Al NMR spectroscopy[J]. Acta Mater, 2001,49: 41.