Sc첨가한 Al-Mg 합금의 고온변형 거동에 미치는 결정립 크기의 영향

우기도; 김석원; 김학신; 양창호; 박희찬; Y. MIURA; 박경태; K. D. Woo; S.W. Kim; H.S. Kim; C.H. Yang; H.C. Park; Y. MIURA; K.T. Park

Korean Journal of Materials Research, Vol.12, No.9, 701-705, September, 2002

DOI10.3740/MRSK.2002.12.9.701 Export Citation

Sc첨가한 Al-Mg 합금의 고온변형 거동에 미치는 결정립 크기의 영향

Effects of Grain Size on High Temperature Deformation Behavior of Sc added Al-Mg Alloy

우기도^†, 김석원, 김학신, 양창호, 박희찬, Y. MIURA¹, 박경태²

전북대학교 신소재공학부, 공업기술연구센터
¹규슈 대학교
²한밭대학교 신소재공학부

K. D. Woo^†, S.W. Kim, H.S. Kim, C.H. Yang, H.C. Park, Y. MIURA¹, and K.T. Park²

Division of Advanced Materials Engineering & the RICT, Engineering Research Institute, Chonbuk National University, Chonbuk, 561-756, Korea
¹Departmnet of Metallurgical Engineering, Hanbat National University, Daejeon, 305-719, Korea
²Department of Metallurgical Engineering, anbat National University, Daejeon 305-719, Korea

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High temperature tensile test has been performed at 450 ? C at different strain rate with various grain size due to different reduction rate of Al-4wt%Mg-0.4wt%Sc alloy which is known to be one of useful superplastic alloys. The grain size of Al-4wt%Mg-0.4wt%Sc alloy is 67 100μm which is courser than that of the alloy which is commonly used as the superplastic material. The total elongation of the Al-4wt%Mg-0.4wt%Sc alloy is strongly dependent on the average grain size, and is a linear function of the inverse average grain size for the present alloy.

Keywords:Grain size;Strain rate;Superplasticity;Al-Mg-Sc alloy

[References]

Kaufman JG, Properties of Aluminum Alloys, ASM, 109-161 (1999) (1999)
Vasudevan AK, Dotherty RD, Aluminum Alloys-contemporary Research and Applications, Academic Press Inc., London, 13-17 (1989) (1989)
Drusy MR, Humphreys FJ, Acta Met., 34, 2259 (1986)
Roder O, Schauerte O, Lutjering G, Gysler A, Mater. Sci. Forum, 217-222, 1835 (1996)
Nieh TG, Kaibyshev R, Hsiung LM, Nguyen N, Wadsworth J, Scr. Met., 36, 1011 (1997)
Wu YL, Froes FH(SAM), Li C, Alvarez A, Metall. Trans., 30A, 1691 (1996)
Drits MY, Ber LB, Bykov YG, Toropova LS, Anastaseva GK, Fiz. Metal. Metalloved., 6, 1172 (1984)
Toropova LS, Bykov YG, Lazarenko VM, Platov YM, Fiz. Metal. Metalloved., 54, 201 (1982)
Sawtell RR, Jensen CL, Metall. Trans., 21A, 421 (1990)
Nieh TG, Hsiung LM, Wadsworth J, Kaibyshev R, Acta Metall., 46, 2789 (1998)
Taiping Lou, Post Doc. Report, Chonbuk National University, Korea (2002) (2002)
Lou TP, Woo KD, Mater. Lett., 52, 374 (2002)
Sherby OD, Burke PM, Prog. Mater. Sci., 13, 325 (1967)
Oikawa H, Sugawara K, Karashima S, Trans. JIM, 19, 611 (1978)
Murty KL, Mohamed FA, Dorn JE, Acta Mater., 20, 1009 (1972)
Kokawa H, Wantanabe T, Karashima S, Phil. Mag. A., 44(6), 1293 (1981)
Sherby OD, Wadsworth, J. Mater. Sci., 1, 925 (1985)
Shin DH, Lee CS, Kim WJ, Acta Mater., 45, 5195 (1997)
Sherby OD, Wadsworth, Prog, Mater. Sci., 33, 166 (1989)

[1] Kaufman JG, Properties of Aluminum Alloys, ASM, 109-161 (1999) (1999)

[2] Vasudevan AK, Dotherty RD, Aluminum Alloys-contemporary Research and Applications, Academic Press Inc., London, 13-17 (1989) (1989)

[3] Drusy MR, Humphreys FJ, Acta Met., 34, 2259 (1986)

[4] Roder O, Schauerte O, Lutjering G, Gysler A, Mater. Sci. Forum, 217-222, 1835 (1996)

[5] Nieh TG, Kaibyshev R, Hsiung LM, Nguyen N, Wadsworth J, Scr. Met., 36, 1011 (1997)

[6] Wu YL, Froes FH(SAM), Li C, Alvarez A, Metall. Trans., 30A, 1691 (1996)

[7] Drits MY, Ber LB, Bykov YG, Toropova LS, Anastaseva GK, Fiz. Metal. Metalloved., 6, 1172 (1984)

[8] Toropova LS, Bykov YG, Lazarenko VM, Platov YM, Fiz. Metal. Metalloved., 54, 201 (1982)

[9] Sawtell RR, Jensen CL, Metall. Trans., 21A, 421 (1990)

[10] Nieh TG, Hsiung LM, Wadsworth J, Kaibyshev R, Acta Metall., 46, 2789 (1998)

[11] Taiping Lou, Post Doc. Report, Chonbuk National University, Korea (2002) (2002)

[12] Lou TP, Woo KD, Mater. Lett., 52, 374 (2002)

[13] Sherby OD, Burke PM, Prog. Mater. Sci., 13, 325 (1967)

[14] Oikawa H, Sugawara K, Karashima S, Trans. JIM, 19, 611 (1978)

[15] Murty KL, Mohamed FA, Dorn JE, Acta Mater., 20, 1009 (1972)

[16] Kokawa H, Wantanabe T, Karashima S, Phil. Mag. A., 44(6), 1293 (1981)

[17] Sherby OD, Wadsworth, J. Mater. Sci., 1, 925 (1985)

[18] Shin DH, Lee CS, Kim WJ, Acta Mater., 45, 5195 (1997)

[19] Sherby OD, Wadsworth, Prog, Mater. Sci., 33, 166 (1989)