Browse > Article
http://dx.doi.org/10.4150/KPMI.2009.16.2.085

Finite Element Analysis of Densification of Mg Powders during Equal Channel Angular Pressing: Effect of Sheath  

Yoon, Seung-Chae (Center for Advanced Aerospace Materials, Pohang University of Science and Technology)
Kim, Taek-Soo (Department of Echo-Materials and Processing, Korea Institute of Industrial Technology (KITECH))
Kim, Hyoung-Seop (Department of Materials Science and Engineering, Pohang University of Science and Technology)
Publication Information
Journal of Powder Materials / v.16, no.2, 2009 , pp. 85-90 More about this Journal
Abstract
Magnesium and its alloys are attractive as light weight structural/functional materials for high performance application in automobile and electronics industries due to their superior physical properties. In order to obtain high quality products manufactured by the magnesium powders, it is important to control and understand the densification behavior of the powders. The effect of the sheath surrounding the magnesium powders on the plastic deformation and densification behavior during equal channel angular pressing was investigated in the study by experimental and the finite element methods. A modified version of Lee-Kim's plastic yield criterion, notably known as the critical relative density model, was applied to simulate the densification behavior of magnesium powders. In addition, a new approach that extracts the mechanical characteristics of both the powder and the matrix was developed. The model was implemented into the finite element method, with which powder compaction under equal channel angular pressing was simulated.
Keywords
Magnesium powder; Densification; Critical relative density constitutive model; Equal channel angular pressing; Finite element method;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 S. Y. Chang, S. W. Lee, K. M. Kang, S. Kamado and Y. Kojima: Mater. Trans., 45 (2004) 488   DOI   ScienceOn
2 S. R. Agnew, J. A. Horton, T. M. Lillo and D. W. Brown: Scripta Mater., 50 (2004) 377   DOI   ScienceOn
3 S. C. Yoon, E. J. Kwak, T. S. Kim, B. S. Chun and H. S. Kim: Mater. Trans., 49 (2008) 967   DOI   ScienceOn
4 H. S. Kim: J. Kor. Inst. Met. Metal., 38 (2000) 817 (Korean)
5 SFTC: http://www.deform.com
6 J. Cai, G. C. Ma, Z. Liu, H. F. Zhang and Z. Q. Hu: J. Alloy. Comp., 422 (2006) 92   DOI   ScienceOn
7 J. K. Kim, H. K. Kim, J. W. Park and W. J. Kim: Scripta Mater., 53 (2005) 120
8 A. Yamashita, Z. Horita and T. G. Langdon: Mater. Sci. Eng. A, 300 (2001) 142   DOI   ScienceOn
9 S. R. Agnew, J. A. Horton, T. M. Lillo and D. W. Brown: Scripta Mater., 50 (2004) 377   DOI   ScienceOn
10 S. R. Agnew, P. Mehrotra, T. M. Lillo, G. M. Stoica and P. K. Liaw: Acta Mater., 53 (2005) 3135   DOI   ScienceOn
11 D. W. Brown, S. R. Agnew, M. A. M. Bourke, T. M. Holden, S. C. Vogel and C. N. Tome: Mater. Sci. Eng. A, 399 (2005) 1   DOI   ScienceOn
12 H. S. Kim, M. H. Seo and S. I. Hong: Mater. Sci. Eng. A, 291 (2000) 86   DOI   ScienceOn
13 S. C. Yoon, S. J. Hong, M. H. Seo, Y. G. Jeong and H. S.Kim: J. Kor. Powder Metall. Inst., 11 (2004) 233 (Korean)   과학기술학회마을   DOI   ScienceOn
14 Y. C. Chen, Y. Y. Huang, C. P. Chang and P. W. Kao: Acta Mater., 51 (2003) 2005   DOI   ScienceOn
15 S. C. Yoon and H. S. Kim: Mater. Sci. Forum, 503-504 (2006) 221   DOI
16 S. C. Yoon, P. Quang, B. S. Chun, H. R. Lee and H. S. Kim: J. Kor. Powder Metall. Inst., 13 (2006) 415 (Korean)   과학기술학회마을   DOI   ScienceOn
17 H. S. Kim and D. N. Lee: J. Kor. Inst. Met. Metal., 30 (1992) 37 (Korean)
18 S. C. Yoon, M. H. Seo and H. S. Kim: Scripta Mater., 55 (2006) 159   DOI   ScienceOn
19 D. W. Brown, S. R. Agnew, M. A. M. Bourke, T. M. Holden, S. C. Vogel and C. N. Tome: Mater. Sci. Eng. A, 399 (2005) 1   DOI   ScienceOn
20 H. S. Kim, M. H. Seo, W. S. Ryu, S. C. Yoon and C. K. Rhee: J. Metastable Nanocryst. Mater., 15-16 (2003) 235   DOI
21 C. H. Bok, J. H. Yoo, S. C. Yoon, T. S. Kim, B. S. Chun and H. S. Kim: J. Kor. Powder Metall. Inst., 15 (2008) 365 (Korean)   과학기술학회마을   DOI   ScienceOn
22 S. C. Yoon, C. H. Bok, M. H. Seo, T. S. Kim and H. S. Kim: Mater. Trans., 49 (2008) 963   DOI   ScienceOn