轧制ZK61镁合金板材晶粒长大行为<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.04.014

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Abstract The annealing experiment of the hot-rolled ZK61 magnesium alloy plates was carried out under different annealing temperature and holding time. The microstructure was observed by optical microscope (OM), and the mathematical model for the relationship among the grain size, annealing temperature and holding time was established to investigate the grain growth behavior of hot-rolled ZK61 magnesium alloy. The results indicate that the increasing annealing temperature and the extending holding time can lead to the coarsened grain. In addition, annealing temperature apparently has a greater effect on the grain growth than holding time. The relationship between the grain size and holding time of ZK61 magnesium alloy in the temperature range of 250-450 ℃ can be well interpreted by the kinetic equation, Dⁿ-D₀ⁿ=kt, where k=k₀exp[-Q_g/(RT)]. And the calculated grain growth exponent (n) and the activation energy (Q_g) are about 3.5 and 45 kJ/mol, respectively.

Key words： ZK61 magnesium alloy annealing grain growth Beck equation

Published: 02 May 2018

CLC number:

TG166.4

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.04.014 OR http://www.mater-rep.com/EN/Y2017/V31/I4/60

1 Liu Yu,Liu Jingan,Liu Zhiguo. Development feature and trend of magnesium processing industry and technology[J]. Nonferrous Met,2013,42(1):1(in Chinese).
刘煜,刘静安,刘志国. 镁合金加工工业及技术的发展特点与趋势[J].有色金属加工,2013,42(1):1.
2 Wang Saixiang, Zhang Datong, Zhang Wen, et al. Superplasticity of hot rolled MB8 magnesium alloy[J]. Trans Mater Heat Treat,2012,33(9):17(in Chinese).
王赛香,张大童,张文,等.热轧MB8镁合金的超塑性[J].材料热处理学报,2012,33(9):17.
3 Guo Fei, Zhang Dingfei, Yang Xusheng, et al. Microstructure and texture evolution of AZ31 magnesium alloy during large strain hot rolling[J]. Trans Nonferrous Met Soc China,2015,1:14.
4 Ji Wenfeng, Yan Hongge, Chen Jihua,et al. Effects of rolling temperature on microstructure and mechanical properties of large strain rolled AZ61 magnesium alloys sheets[J]. Mater Mechan Eng,2013(6):17(in Chinese).
嵇文凤,严红革,陈吉华,等. 轧制温度对大应变轧制AZ61镁合金板材组织与力学性能的影响[J]. 机械工程材料,2013(6):17.
5 Xiao Xinping, Wang Shuying, Cui Yongqiang. Study of ultra fine grain AZ91 sheet prepared by accumulative roll-bonding[J]. Hot Work Technol,2013,42(7):123(in Chinese).
肖心萍,王淑英,崔永强. 累积叠轧法制备纳米晶AZ91板材的研究[J].热加工工艺,2013,42(7):123.
6 Jiang Haitao, Duan Xiaoge, Cai Zhengxu, et al.Superplastic pro-cess and deformation mechanism of asymmetrically rolled AZ31 magnesium alloy[J]. J Mater Eng,2015(8):7(in Chinese).
江海涛, 段晓鸽, 蔡正旭, 等. 异步轧制AZ31镁合金板材的超塑性工艺及变形机制[J]. 材料工程,2015(8):7.
7 Gang Jianwei, Shi Binqing, Chen Rongshi, et al. Microstructure evolution and static recrystallization behavior of hot-rolled Mg-1Zn and Mg-1Y alloys during isothermal annealing[J]. Acta Metall Sin,2012,48(5):526(in Chinese).
刚建伟,施斌卿,陈荣石,等. 热轧Mg-1Zn和Mg-1Y退火组织演变及静态再结晶行为[J].金属学报,2012,48(5):526.
8 Yamamoto A, Kakishiro M, Ikeda M, et al. Grain refinement on AZ31 magnesium alloy by highly strained and annealed method[J]. Mater Sci Forum,2004,449-452:669.
9 Voort G V.Grain size measurement[M]//Mcall J L,Steele Jr J H.Practical applications of quantitative metallography.Philadelphia,USA:American Society for Testing and Materials,1984:85.
10 Atkimon H V. Theories of normal grain growth in pure single phase systems[J]. Acta Metall,1988,36(3):469.
11 Burke J E, Turnbull D. Recrystallization and grain growth[J]. Prog Met Phys,1952,3(11-15):220.
12 Konkova T, Mironov S, Korznikov A, et al. Grain growth during annealing of cryogenically-rolled Cu30Zn brass[J]. J Alloys Compd,2016,666:170.
13 Tripathi A, Samajdar I, Nie J F, et al. Study of grain structure evolution during annealing of a twin-roll-cast Mg alloy[J]. Mater Cha-racterization,2016,114:157.
14 Frost H J, Ashby M F. Deformation-mechanism maps, the plasticity and creep of metals and ceramics[M]. New York: Pergamon Press,1982:43.
15 Gao P, Lu L, Lai M O. Grain growth and kinetics for nanocrystalline magnesium alloy produced by mechanical alloying[J]. Mater Res Bull,2001,36:981.
16 Maung A T, Li L, Lai M O. Kinetics of grain growth in nanocrystalline magnesium-based metal-metal composite synthesized by mechanical alloying[J]. Compos Sci Technol,2006,66:531.
17 Higgins G T. Grain-boundary migration and grain growth[J]. Mater Sci,1974,8(5):143.
18 Huang Y D, Froyen L. Recovery, recrystallization and grain growth in Fe₃Al-based alloys[J]. Intermetallics,2002,10(5):473.
19 Moreau G, Cornet J A, Calais D. Acceleration de la diffusion chimique sous irradiation dans le systeme aluminium-magnesium[J]. J Nuclear Mater,1971,38(2):197.