Browse > Article

Effect of Process Parameters of P/M and Induction Heating on the Cell Morphology and Mechanical Properties of 6061 Aluminum Alloy  

강충길 (부산대 기계공학부, 정밀정형 및 금형가공연구소)
윤성원 (부산대학교 대학원 정밀기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.6, 2003 , pp. 222-229 More about this Journal
Abstract
The purpose of this study is to evaluate the mechanical properties of 6061 Al foams, which were fabricated by P/M and multi-step induction heating method, and to build the database, which is needed for computer aided modeling or foam components design. Aluminium foams, consisting of solid aluminium and large quantities of porosities, is widely used in automotive, aerospace, naval as well as functional applications because of its high stiffness at very low density, high impact energy absorption, heat and fire resistance, and greater thermal stability than any organic material. In this study, 6061 Al foams were fabricated for variation of fraction of porosities (%) according to porosities (%)-final heating temperature ( $T_{a3}$) curves. Mechanical properties such as compressive strength, energy absorption capacity, and efficiency were investigated to evaluate the feasibility of foams as crash energy absorbing components. Moreover, effect of the surface skin thickness on plateau stress and strain sensitivity of the 6061 Al foams with low porosities (%) were studied.d.
Keywords
6061 Al foam; Induction Heating; Fraction of porosities; Energy absorption efficiency; Surface skin thickness;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Simansik, F., 'Reproducibility of Aluminium Foam Properties Metal Foams and Porous Metal Structures,' In: Banhart J, Ashby MF, Fleck NA, editors, 1st Int. Conf., Bremen, Germany, Bremen: MIT Press-Verlag, pp. 235, June 14-16, 1999
2 Wang, B., He, D. P. and Shu, G., 'Compressive Properties and Energy Absorption of Foamed Al Alloy,' Proc. of the 2nd Int. Conf. on Metal Foams and Porous Metal Structures, MIT-Publishing, Bremen, p. 351, June 18-20, 2001
3 Evans, A. G., Hutchinson, J. W., Ashby, M. F., 'Multifunctionality of Cellular Metal Systems,' Progress in Materials Science, Vol. 43, pp. 171-221, 1999   DOI   ScienceOn
4 Simansik, F., Kovacik, J., Minarikova, N., 'Deformation and Fracture Mechanism of Aluminium Foams,' 1998 PM World Congress, Porous Materials, Granada, Spain, p. 245, 1998
5 Geyer, K. E., 'A New Front Buffer for Suburban Railcars,' Proc. of the 2nd Int. Conf. on Metal Foams and Porous Metal Structures, MIT-Publishing, p. 31, June 18-20, 2001
6 Gibson, L. J., Ashby, M. F., 'Cellular Solids: Structure and Properties,' Second editions., Cambridge University Press, Cambridge, UK, 1997
7 Duarte, I., Banhart, J., 'A Study of Aluminium Foam Formation Kinetics and Microstructure,' Acta Mater., Vol. 48, p. 2349, 2000   DOI   ScienceOn
8 Yu, C. J., Claar, T. D., Eifert, H. H., Hall, I. W., Franz, R. E., Leihton, K. T., Hasson, D. F., 'Deformation Energy Absorbtion of Metal Foams at High Strain Rates,' Proc. of the 1st Int. Conf. on Metal Foams and Porous Metal Structures, MIT-Publishing, Bremen, pp. 235, June 14-16, 1999
9 Ashby, M. F., Evans, A., Fleck, N. A., Gibson, L. J., Hutchinson, J. W.and Wadley, H. N. G., 'Metal Foam-A Design Guide,' Butterworth-Heinemann, 2000
10 Kresse, R., 'Characteristics and Handing of Titanium Hydride,' Proc. of the 1st Int. Conf. on Metal Foams and Porous Metal Structures, p. 31, 1999
11 Youn, S. W., Lee, S. H., Kang, C. G., 'The Effect of Process Parameters on Cell Morphology in Cellular Aluminium Alloy Fabricated by Powder Compression and the Induction Heating Process,' Proc. Inst. Mech. Engrs. Part B-Journal of Engineering Manufacture, Vol. 217, No. 2, pp. 201-211(11), 2003   DOI   ScienceOn
12 Grandinger, R., Simancik, F., Degischer, H. P., 'Determination of Mechanical Properties of Foamed Metals,' Welding Technology, Materials and Materials Testing, Fracture Mechanics and Quality Management, Vol. 2, p. 701, 1997
13 Kovasik, J., Simanisk, F., 'Comparison of Zinc and Aluminium Foams in Deformation and Fracture,' In : Parilak L, Danninger H, editors, Deformation and Fracture in Structural PM Materials DF PM '99, Vol. 1, IMR SAS, Kosice, p. 106, 1999
14 Kim, S. K., Hong, T. W., Cho, S. H. and Kim, Y. J., 'Current and Future Applications of Metallic Foams,' J. of Korean Foundrymen's Society, Vol. 18, No. 5, pp. 419, 1998