DOI QR코드

DOI QR Code

Microstructure Change of Large Cast-forged Product by Forging and Heat Treatment Conditions

단조/열처리 공정이 대형 주단조품의 조직변화에 미치는 영향

  • Published : 2009.10.01

Abstract

Thermal energy control is a important factor to control properties of large sized product in ingot-forging. Good control of thermal energy helps to increase characteristics and eliminate defects of large cast-forged part, such as large sized forged shell. We have studied about not only large size ring forging process and after heat treatment process by FEM simulation. Changes of temperature and microstructure for forged shell were predicted according to different heat treatment conditions. Therefore, we can choose the proper heat treatment condition by FEA. The sectional properties confirmed by practical experiment and evaluation have presented possibilities of process design by computational analysis.

Keywords

References

  1. J. T. Kim, Y. S. Choi, 2005, Heat Treatment Analysis on Low-Alloy Steel, Trans. Mater. Process., Vol. 14, No.3, pp. 215-223 https://doi.org/10.5228/KSPP.2005.14.3.215
  2. H. J. Kim, D. J. Lee, H. Y. Kim, S. C. Choi, 2006, Analysis of the Carburizing Heat Treatment Process for SNCM Alloy Steel Using the Finite Element Method, Trans. Kor. Soc. Mech. Eng., Vol. 30, No. 10, pp. 1284-1292 https://doi.org/10.3795/KSME-A.2006.30.10.1284
  3. J. K. Jung, O. Y. Lee, 2008, Microstructure and Mechanical Properties of High Mn TWIP Steel, J. Kor. Inst. Met. Mater., Vol. 46, No. 10, pp. 627-633
  4. J. S. Kim, Y. H. Lee, 2007, Effect of lntergranular Ferrite on the Hydrogen Delayed Fracture Resistance of High Strength Boron-added Steel, Int. J. Plast., Vol. 45, No.9, pp. 506-513
  5. M. G. Lee, S. J. Kim, H. N. Han, W. C. Jeong, 2008, Implicit Finite Element Formulations for MultiPhase Transformation in High Carbon Steel, Int. J. Plast., Vol. 25, pp. 1726-1758 https://doi.org/10.1016/j.ijplas.2008.11.010
  6. A. Pineau, S. D. Antolovich, 2009, High Temperature Fatigue of Nickel-Base Superalloys-A Review with Special Emphasis on Deformation Modes and Oxidation, Eng. Fail. Anal., Vol. 16, No.8, pp. 2668-2697 https://doi.org/10.1016/j.engfailanal.2009.01.010
  7. B. P. DiPaolo, J. G. Tom, 2009, Effects of Ambient Temperature on a Quasi-Static Axial-Crush Configuration Response of Thin-Wall, Steel Box Components, Thin-Walled Struct., Vol. 47, No. 8-9, pp. 984-997 https://doi.org/10.1016/j.tws.2009.01.007