유한요소법을 이용한 등통로각압출 공정의 마그네슘 분말 고형화 거동 해석: 피복재 효과
Finite Element Analysis of Densification of Mg Powders during Equal Channel Angular Pressing: Effect of Sheath
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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.
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.
참고문헌 (22)
- S. Y. Chang, , Mater. Trans., 45, pp.488~ (2004)
- S. R. Agnew, , Scripta Mater., 50, pp.377~ (2004)
- D. W. Brown, , Mater. Sci. Eng. A, 399, pp.1~ (2005)
- J. Cai, , J. Alloy. Comp., 422, pp.92~ (2006)
- J. K. Kim, , Scripta Mater., 53, pp.120~ (2005)
- S. C. Yoon, , Mater. Trans., 49, pp.963~ (2008)
- A. Yamashita, , Mater. Sci. Eng. A, 300, pp.142~ (2001)
- S. R. Agnew, , Scripta Mater., 50, pp.377~ (2004)
- D. W. Brown, , Mater. Sci. Eng. A, 399, pp.1~ (2005)
- S. R. Agnew, , Acta Mater., 53, pp.3135~ (2005)
- H. S. Kim, , Mater. Sci. Eng. A, 291, pp.86~ (2000)
- Y. C. Chen, , Acta Mater., 51, pp.2005~ (2003)
- S. C. Yoon, , J. Kor. Powder Metall. Inst., 11, pp.233~ (2004)
- S. C. Yoon, , Mater. Sci. Forum, 통권 : 503, pp.221~ (2006)
- 윤승채, "분말 ECAP 공정 시 치밀화의 유한요소해석", 한국분말야금학회지, 13(6), pp.415~420 (2006), 한국분말야금학회
- H. S. Kim, , J. Kor. Inst. Met. Metal., 30, pp.37~ (1992)
- H. S. Kim, , J. Kor. Inst. Met. Metal., 38, pp.817~ (2000)
- H. S. Kim, , J. Metastable Nanocryst. Mater., 15, pp.235~ (2003)
- "SFTC"[URL]
- S. C. Yoon, , Mater. Trans., 49, pp.967~ (2008)
- 복천희, "임계상대밀도 모델을 이용한 분말 등통로각압축공정시 분말 치밀화 거동", 한국분말야금학회지, 15(5), pp.365~370 (2008), 한국분말야금학회
- S. C. Yoon, , Scripta Mater., 55, pp.159~ (2006)