Browse > Article
http://dx.doi.org/10.4150/KPMI.2005.12.1.043

Thermal Stability of Al-Fe-X Alloy System Prepared by Mechanical Alloying and Spark Plasma Sintering: II. Al-Fe-Cr and Al-Fe-Mo  

Lee, Hyun-Kwuon (School of Advanced Materials and System Engineering,Kumoh National Institute of Technology)
Lee, Sang-Woo (School of Advanced Materials and System Engineering,Kumoh National Institute of Technology)
Cho, Kyeong-Sik (School of Advanced Materials and System Engineering,Kumoh National Institute of Technology)
Publication Information
Journal of Powder Materials / v.12, no.1, 2005 , pp. 43-50 More about this Journal
Abstract
Mechanical alloying using high-energy ball mill and subsequent spark plasma sintering (SPS) process was applied to Al-Fe-Cr and Al-Fe-Mo powder mixture to investigate effects of Cr and Mo addition on thermal stability of Al-Fe, and thereby to enhance its thermal stability up to $500^{\circC}$. Various analytical techniques including micro-Vickers hardness test, SEM, TEM, X-ray diffractometry and corrosion test were carried out. It was found that addition of Cr and Mo to Al-Fe system played a role of grain growth inhibitor of matrix Al and some precipitates such as $Al_3Fe$ during SPS and subsequent heat treatment. The inhibition of grain growth resulted in increased Vickers hardness and thermal stability up to $500^{\circC}$ comparing to those of Al-Fe alloy system.
Keywords
Al-Fe,; Al-Fe-Cr; Al-Fe-Mo; Mechanical alloying; Spark plasma sintering; Grain growth; Thermal stability;
Citations & Related Records
연도 인용수 순위
  • Reference
1 F. H. Froes: Metal Powder Reports, 1 (1989) 59
2 B. Huang, K. N. Ishihara and P. H. Shingu: Mater. Sci. Eng., A231 (1997) 72
3 V. I. Fadeeva and A. V. Leonov: Mater. Sci. Eng., A206 (1996) 90   DOI   ScienceOn
4 K. W. Oh and K. S. Lee: J. Korean Inst. Met. Mater., 30 (1992) 611 (Korean)
5 D. J. Skinner, R. L. Bye, D. Raybould and A. M. Brown: Scr. Metall., 20 (1986) 867   DOI   ScienceOn
6 V. K. Vasudevan and H. L. Fraser: Scr. Metall., 21 (1987) 1105   DOI   ScienceOn
7 R. E. Franck and J. A. Hawk: Scr. Metall., 23 (1989) 113   DOI   ScienceOn
8 H. K. Lee, S. W. Lee and K. S. Lee: J. Korean Powder Metall. Inst., 12 (2005) 71 (Korean)
9 L. F. Mondolfo: Aluminum Alloys: Structure and Properties (1976) 24
10 V. K. Vasudevan and H. L. Fraser: Mater. Sci. Eng., 98 (1988) 131   DOI   ScienceOn
11 K. F. Kobaysshi: J. Mater. Sci., 25 (1990) 3149   DOI
12 M. A. Morris and D. G. Morris: Mater. Sci. Eng., A136 (1991) 59
13 I. Kondoh, T. Tanaka and N. Tamari: J. Cer. Soc. Japan., 102 (1994) 505   DOI   ScienceOn
14 M. Tokita: J. Powder Tech. Jpn., 30 (1993) 790   DOI   ScienceOn