Browse > Article
http://dx.doi.org/10.4150/KPMI.2006.13.3.172

Aging Characteristics of 7xxx Series Al Composites with Al2O3  

Min Kyung-Ho (Division of Materials Science and Engineering, Hanyang University)
Park Kwang-Hyun (Division of Materials Science and Engineering, Hanyang University)
Seo Young-Ik (Division of Materials Science and Engineering, Hanyang University)
Chang Si-Young (Department of Materials Engineering, Hankuk Aviation University)
Kim Young-Do (Division of Materials Science and Engineering, Hanyang University)
Publication Information
Journal of Powder Materials / v.13, no.3, 2006 , pp. 172-177 More about this Journal
Abstract
Aging characteristics and mechanical properties of commercial 7xxx series Al composites were investigated from viewpoint of ceramic contents. After sintering process, sintered densities of blended and composite powder were 95 and 97%, respectively. Each part was solution-treated at $475^{\circ}C$ for 60 min and aged $175^{\circ}C$. And two-step aging was also performed form $120^{\circ}C$ to $175^{\circ}C$. The aging behavior of the sintered composite pow-der was different from that of sintered blended powder. The peak aging time of the composite was rapid as well due to strain. Before aging, mechanical properties of sintered composite powder was significantly higher than that of sintered blended powder. These increments of properties were directly affected by ceramic particles. However, after aging, incremental rate of mechanical properties was slowed in the composite.
Keywords
7xxx series Al; Sintering; Composite powder; Aging; Compressive property;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J.L. Petty and RD. Goolsby: J. Mater. Sci., 24 (1989) 1439   DOI
2 http://www.matweb.comlsearch/Specificmaterial.asp
3 환경을 위한 자동차재료기술 workshop. 한국자동차공학회(1993) p. 35
4 I. J. Polmear: 'Light Alloys', Edward Arnold (1981) p. 1
5 WH. Hunt Jr.: Metal Powder Report, 55 (2000) 28
6 RM. German: 'Powder Metallurgy Science', MPIF (1994) p. 15
7 D.R Frear, J.E. Sanchez, A.D. Romig, Jr. and J.W Morris, Jr.: Metall. Trans., 21 (1990) 2449
8 S. Arakawa, T. Hatayama, K. Matsugi and O. Yanagisawa: Scripta Mater., 42 (2000) 755   DOI   ScienceOn
9 S. Ceresara andP. Fiorini: Powder Metall., 4 (1981) 755
10 J.S. Lin, rx. Li and R Wu: Scripta Mater. 28 (1993) 281   DOI
11 V.C. Srivastava, A. Schneider, V. Uhlenwinkel and K.: Bauckhage, Mater. Sci. Eng., A412 (2005) 19
12 W.F. Smith and N.J. Grant: Metall. Trans., 1 (1970) 979
13 W.F. Smith: 'Structure and Properties of Engineering Alloys', McGraw-Hill (1997)
14 F.V. Beaumont: InrI J of Powder Metall, 36 (2000) 41
15 M.B. Chamberlain and S.L. Lehocsky, Thin solid Films, 45 (1977) 189   DOI   ScienceOn
16 Y'X. Lu, X.M. Meng, C.S. Lee, RK.Y. Li, C.G. Huang and J.K.L. Lai: J. Mater. Process. Tech., 94 (1999) 175   DOI   ScienceOn
17 C. Lall and W Health: InrI J of Powder Metall., 36 (2000) 45