转模等通道转角挤压路径对AZ31镁合金组织和力学性能的影响

金属学报

2010, Vol. 46

Issue (1): 27-33

论文

本期目录 | 过刊浏览

转模等通道转角挤压路径对AZ31镁合金组织和力学性能的影响

严凯¹;孙扬善^1;2;白晶^1;2;薛烽^1;2

1) 东南大学材料科学与工程学院; 南京 211189
2) 江苏省先进金属材料高技术研究重点实验室; 南京 211189

EFFECTS OF ROTARY-DIE ECAP ROUTES ON MICROSTRUCTURE AND MECHANICAL PROPERTY OF AZ31 MAGNESIUM ALLOY

YAN Kai ¹; SUN Yangshan ^1;2; BAI Jing ^1;2; XUE Feng^1;2

1) College of Materials Science and Engineering; Southeast University; Nanjing 211189
2) Jiangsu Key Lab of Advanced Metallic Materials; Nanjing 211189

引用本文:

严凯孙扬善白晶薛烽. 转模等通道转角挤压路径对AZ31镁合金组织和力学性能的影响[J]. 金属学报, 2010, 46(1): 27-33.
YAN Kai SUN Yangshan BAI Jing XUE Feng. EFFECTS OF ROTARY-DIE ECAP ROUTES ON MICROSTRUCTURE AND MECHANICAL PROPERTY OF AZ31 MAGNESIUM ALLOY[J]. Acta Metall Sin, 2010, 46(1): 27-33.

全文: PDF(1364 KB)

摘要:

利用3D转模等通道转角挤压(3D-RD ECAP)设备, 对AZ31镁合金进行了A', B_A', B_C'与C' 4种路径的ECAP实验. 对试样的显微组织观察显示, 经4种路径挤压后合金显微组织都明显细化, 但不同路径对微观组织和力学性能的影响不同. 经A' 和B_A'路径挤压的试样组织中晶粒尺寸和硬度分布比其它两种路径挤压的试样更均匀, 且显示出更高的塑性. 通过对各种路径挤压过程中试样内部立方单元的变形分析, 揭示了传统的剪切模型理论的不足. 利用有限元方法模拟了试样ECAP的形变过程, 证实材料在变形过程中各部位受力差异很大. ECAP对试样变形的均匀性主要取决于拉/压应力交替作用于试样各个部位的顺序, 而与传统剪切模型中的立方单元变形规律没有直接关系.

关键词 ：镁合金, 等通道转角挤压, 转模, 挤压路径, 组织均匀性, 晶粒细化

Abstract：

Using a 3D rotary-die equal-channel angular pressing (3D-RD ECAP) mold, the commercial wrought magnesium alloy AZ31 has been processed through 4 routes(A', B_A', B_C' and C') and microstructures as well as mechanical properties of the samples processed were investigated. The results reveal that all the 4 routes can refine microstructures of the alloy, however, the effects on microstructural homogeneity and tensile elongations of the samples are different. The grain sizes of the samples processed through routes A' or B_A' are more uniform and their tensile elongations at ambient temperature are also higher than those through B_C' or C' routes. The distributions of hardness on the central longitudinal planes of samples extruded through different routes are well consistent with the microstructural characters at the corresponding positions. Strain analysis on the cubic elements in the samples reveals the limitation of the traditional shear mode for ECAP. Based on experimental results and finite element method (FEM) simulation, the deformation homogeneity caused by ECAP processing is closely related to the alternative action of tensile and compressive stresses at the different positions in the samples and is independent of the deformation regularity of the cubic elements in the shear model proposed in the previous studies.

Key words： magnesium alloy equal-channel angular pressing rotary-die pressing route structure homogeneity grain-refinement

收稿日期: 2009-06-30

ZTFLH:

TG146.2

基金资助:

国家科技支撑计划资助项目2006BAE04B07

作者简介: 严凯, 男, 1979年生, 博士生

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[1] Miyahara Y, Horita Z, Langdon T G. Mater Sci Eng, 2006; A420: 240

[2] Chuvil’deev V N, Nieh T G, Gryaznov M Y, Kopylov V I, Sysoev A N. J Alloy Compd, 2004; 378: 253

[3] Mabuchi M, Iwasaki H, Yanase K. Higashi K. Scr Mater, 1997; 36: 681

[4] Figueiredo R B, Langdon T G. Mater Sci Eng, 2006; A430: 151

[5] Chuvil’deev V N, Kopylov V I, Gryaznov M Y, Sysoev A N. Dokl Phys, 2003; 48: 343

[6] Lapovok R, Thomson P F, Cottam R, Estrin Y. Mater Sci Eng, 2005; A410–411: 390

[7] Kim J C, Nishida Y, Arima H, Ando T. Mater Lett, 2003; 57: 1689

[8] Nishida Y, Arima H, Kim J C, Ando T. Scr Mater, 2001; 45: 261

[9] Yamashita A, Horita Z, Langdon T G. Mater Sci Eng, 2001; A300: 142

[10] Matsubara K, Miyahara Y, Horita Z, Langdon T G. Acta Mater, 2003; 51: 3073

[11] Fatemi–Varzaneh S M, Zarei–Hanzaki A, Beladi H. Mater Sci Eng, 2007; A456: 52

[12] Li Y Y, Zhang D T, Chen W P, Liu Y, Guo G W. J Mater Sci, 2004; 39: 3759

[13] Chino Y, Kimura K, Hakamada M, Mabuchi M. Mater Sci Eng, 2008; A485: 311

[14] Jiang L, Jonas J J. Scr Mater, 2008; 58: 803

[15] Lee B H, Reddya N S, Yeoma J T, Lee C S. J Mater Process Technol, 2007; 187–188: 766

[16] Figueiredo R B, Aguilar M T P, Cetlin P R. Mater Sci Eng, 2006; A430: 179

[17] Chen Z H. Wrought Magnesium Alloys. Beijing: Chemical Industry Press, 2005: 28

(陈振华. 变形镁合金. 北京: 化学工业出版社，2005: 28)

[18] Kim W J, Hong S I, Kim Y S, Min S H, Jeong H T, Lee J D. Acta Mater, 2003; 51: 3293

[19] Beyerlein I J, T´oth L S. Prog Mater Sci, 2009; 54: 427

[20] Valiev R Z, Islamgaliev R K, Alexandrov I V. Prog Mater Sci, 2000; 45: 103

[21] Iwahashi Y, Horita Z, Nemoto M, Langdon T G. Acta Mater, 1998; 46: 3317

[22] Langdon T G, Furukawa M, Nemoto M, Horita Z. JOM, 2000; 52(4): 30

[23] Valiev R Z, Langdon T G. Prog Mater Sci, 2006; 51: 881

[24] Chino Y, Kimura K, Mabuchi M. Mater Sci Eng, 2008; A486: 481

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