Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
권호 표지
DOI QR코드

DOI QR Code

Effect of Sn Addition on the SCC Properties of Al-Cu-Mn Cast Alloy

Al-Cu-Mn 주조합금의 SCC 특성에 미치는 Sn 첨가의 영향

  • Kim, Kwang-Nyeon (Dept.of Materials Science Engineeirng, Busan National University) ;
  • Kim, Kyung-Hyun (Korea Institute of Machinery and Materials) ;
  • Kim, In-Bae (Dept.of Materials Science Engineeirng, Busan National University)
  • Published : 2002.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

Effect of Sn addition on the stress corrosion cracking(SCC) resistance of the Al-Cu-Mn cast alley was investigated by C-ring teat and electrical conductivity measurement, The electrical conductivity and SCC resistance increased by Sn addition. The alley containing 0,10%Sn showed maximum electrical conductivity and the best SCC resistance. At the same composition, the electrical conductivity and SCC resistance increased from peak aged condition to ever aged condition. The PFZ and coarse precipitates along the grain boundary were observed from TEM micrographs. The fracture mode of the alloy was confirmed as intergranular type and showed brittle fracture surface. The SCC mechanism of the alloy was concluded as the anodic dissolution model, The maximum hardness was increased from 130Hv in the Sn-free alloy to 156Hv in the 0.10%Sn added alloy.

Keywords

References

  1. A. Wilm, Metallurgie, 8, 225 (1906)
  2. P.A, Joly and R. Mehrabian, J. Mater. Sci., 11, 1393 (1976) https://doi.org/10.1007/BF00540873
  3. M.C. Flemings, Metall. Trans., 27A, 957 (1991)
  4. I.J. Polmear, Trans. Mater. Soc. AIME, 230, 1331 (1964)
  5. K.H. Kim, T.H. Lee, J.G. Park and I.B. Kim, J. Kor. Inst. Met. & Mater., 37, 142 (1999)
  6. C.H. Lee, K.H. Kim and I.B. Kim, Kor. J. Mater. Res., 11, 266 (2001)
  7. K.H. Kim, B.H. Lee and LB. Kim, Kor. J. Mater. Res., 11, 300 (2001)
  8. MIL-H-6088G, 'Heat Treatment of Aluminum Alloys', p. 43 (1991)
  9. SAE AMS 4107A (1986)
  10. J.C. Beddoes and M.C. Demalherbe, Can. Aeronaut. Space, J., 27, 222 (1981)
  11. M.U. Islam and W.Wallace, Met. Tech., 11,320 (1984) https://doi.org/10.1179/030716984803274594
  12. J.W. Choi, J.K. Kim, H.G. Kim, S.L. Lee and LB. Kim. Kor. J. Mater. Res., 9, 695 (1999)
  13. A.H. Sully, H.K. Hardy and T. Heal : J. Inst Met, 76, 269 (1949-1950)
  14. P.N. Adler, R. Delasi and G. Gecshwind, Metall. Trans., 3,12,3191 (1972) https://doi.org/10.1007/BF02661333
  15. K.G.Kent, J. Inst. Met, 15,3, 171 (1970)
  16. T.H. Sanders, Jr. E.A. Ludwiczak and R. R. Sawtell, Mater. Sci. Eng., 43, 247 (1980) https://doi.org/10.1016/0025-5416(80)90110-X
  17. R.B.Nicholson, J. Inst. Met, 95, 91 (1967)
  18. A.J. De Ardo and R.D. Townsend, Metall. Trans., 1, 2573 (1970)
  19. P.K. Poulose, J.E. Morral and A.J. McEvily, Metall. Trans., 5, 1393 (1974) https://doi.org/10.1007/BF02646625

Cited by

  1. Effects of Silicon and Chromium on the SCC Properties of Al-Zn-Mg-Cu Cast Alloy vol.449-452, pp.1662-9752, 2004, https://doi.org/10.4028/www.scientific.net/MSF.449-452.585