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http://dx.doi.org/10.12656/jksht.2018.31.3.104

Effects of Heat Treatment Temperature and Cooling Method on Microstructure and Hardness of Cu-22Sn alloy  

Jeong, Museob (Dept. of Materials Science & Engineering, Chungnam National University)
Shin, Ari (Dept. of Materials Science & Engineering, Chungnam National University)
Han, Jun Hyun (Dept. of Materials Science & Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.31, no.3, 2018 , pp. 104-110 More about this Journal
Abstract
The effects of heat treatment time and cooling method on microstructure and mechanical property of Cu-22wt%Sn alloy were discussed. ${\alpha}+{\delta}$ mixed phase structure was obtained in air-cooled specimens after heat treatment at 775, 750, and $700^{\circ}C$ for 1 hour. On the other hand, in water-cooled specimens, ${\alpha}+{\beta}^{\prime}$ martensite mixed phase was obtained. In the case of water-cooled specimens, the hardness value decreased with decreasing heat treatment temperature because the volume fraction of ${\alpha}$ phase with low hardness value increased as the heat treatment temperature decreased. In water-cooled specimen after heat treatment at $600^{\circ}C$, ${\gamma}^{\prime}$ martensite was formed instead of ${\beta}^{\prime}$ martensite. The hardness value of ${\gamma}^{\prime}$ martensite was lower than those of ${\beta}^{\prime}$ and ${\delta}$ phases.
Keywords
Tin bronze; Heat treatment; Microstructure; Hardness; Martensite;
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Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 J. S. Park, C. W. Park and K. J. Lee : Mater. Charact. 27 (2009) 1268.
2 Y. Li, K. He, C. Liao and C. Pan : Mater. Res. Soc. 27 (2012) 192.   DOI
3 G. S. Ahn and S. Y. Lee : Yuggijang, Hwasan Press, Seoul (2002) 215.
4 H. N. Han and D. N. Lee : Korean J. Met. Mater. 34 (1996) 713.
5 J. S. Lee and J. S. Park : J. Conserv. Sci. 30 (2014) 417.   DOI
6 D. H. Bae, J. H. Shin and G. B. Kwon : Development of functional sterilization tablewares, National Science Museum, Daejeon (2007) 33.
7 H. Fujiwara, T. Nishimoto, H. Miyamoto and K. Ameyama : Proceedings of the 8th Pacific Rim International Congress on Advanced Materials and Processing (2013) 2455.
8 E. George : Copper and its alloys, Halsted Press, New York (1982) 241.