Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effect of Quenching and Tempering Temperatures on Mechanical Properties of A487 Cast with Different C Contents

C 함량이 다른 A487 주강품의 열처리 조건에 따른 기계적 및 부식 특성

  • Jung, Woo-Jin (Dept of Met. and Mat. Eng., ReCAPT, Gyeongsang National University) ;
  • Jeong, Dae-Ho (Dept of Met. and Mat. Eng., ReCAPT, Gyeongsang National University) ;
  • Lee, Young-Cheol (Dongnam Regional Divison, Korea Institute of Industrial Technology) ;
  • Lee, Jae-Hyun (Dept. of Mat. Sci. and Eng., Changwon National University) ;
  • Kim, Sang-Shik (Dept of Met. and Mat. Eng., ReCAPT, Gyeongsang National University)
  • Received : 2015.04.07
  • Accepted : 2015.07.16
  • Published : 2015.08.31
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Abstract

The effects of quenching and tempering temperatures on the tensile, impact and corrosion properties of A487 alloy cast with different C contents of 0.16, 0.19 to 0.23 wt.% were examined. The impact tests were conducted at $25^{\circ}C$ and $-60^{\circ}C$ and the immersion test was performed using 3.5% NaCl solution for 14 days. The quenching temperature affected the mechanical properties of A487 alloy cast, while the magnitude of change varied depending on the C content. The increase in tempering temperature showed the typical trend of decreasing tensile strength and increasing impact properties. The change in quenching and tempering temperature in this study did not affect the corrosion properties of A487 alloy significantly. The change in mechanical and corrosion properties of A487 with different C contents was discussed based on the microstructural and fractographic observation.

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References

  1. Totten George E., Maurice A.H. Howes, Steel Heat Treatment Handbook, New York (1997) 65-9.
  2. Speich G.R. and Leslie W.C., Met. Trans., "Tempering of steel", 3 (1972) 1043-54. https://doi.org/10.1007/BF02642436
  3. Itabashi M.I. and Kawata K., Int. J. Impact EnG., "Carbon content effect on high-strain-rate tensile properties for carbon steels", 24 (2000) 117-31. https://doi.org/10.1016/S0734-743X(99)00050-0
  4. Michaud P., Delagnes D., Lamesle P., Mathon M.H. and Levaillant C., Acta Mater., "The effect of the addition of alloyinh elements on carbide precipitation and mechanical properies in 5% chromium martensitic steels", 55 (2007) 4877-89. https://doi.org/10.1016/j.actamat.2007.05.004
  5. Lui M.-W. and MAY I. Le, Metall. Mater. Trans. A, "Relation Between Tensile Strength and Carbide Size AISI 4140 Steel", 6A (1975) 583-4.
  6. Ayer R. and Machmeier P.M., Metall. Mater. Trans. A, "Microstructural Basis for the Effect of Chromium on the Strength and Toughness of AF141O-Based High Performance Steels", 27A (1996) 2510-17.
  7. Jung WJ, Jeong DH, Lee YC, Lee JH and Kim SS, J. Korea Foundry Society, "Mechanical and corrosion properties of A487 cast with different C and Cr/Mo contents", 35 (2015) 45-52. https://doi.org/10.7777/jkfs.2015.35.3.045
  8. Beacham, C. D., ASM Trans., "An Electron Fractographic Study of the Influence of Plastic Strain Conditions Upon Ductile Rupture Processes in Metals", 56 (1963) 318-26.
  9. Behai V.G. and Melilli Albert S., Stainless Steel Castings, Philadelphia (1980).
  10. Im YR, Oh YJ, Lee BJ, Hong JH and Lee HC, J. Nucl. Mater., "Effects of carbide precipitation on the strength and Charpy impact properties of low carbon Mn-Ni-Mo bainitic steels", 297 (2001) 138-48. https://doi.org/10.1016/S0022-3115(01)00610-9
  11. Rosenfield A.R., Int. Mater. Rev., "Criteria for ductile fracture of two-phase alloys", 13-1 (1968) 29-40. https://doi.org/10.1179/imr.1968.13.1.29