Evaluation of Cooling Characteristics of Quenchants by Using Inverse Heat Conduction Methods and Property Prediction

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Abstract:

A sequential numerical method for characterization of hardening performance of quenchants applied for steel quenching is outlined here. This novel method is based on the specific processing of measured time–temperature samples performed as a result of cooling curve tests. The heat transfer coefficient, as a function of surface temperature, characterises the heat transfer during cooling and is calculated using an iterative inverse algorithm. The heat transfer coefficient is used for calculation of the microstructural constituents and the hardness profile of cylindrical samples of arbitrary diameters. The hardening performance of the media is evaluated by the estimated hardness of the specimen obtained by heat treatment.

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153-158

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September 2010

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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[1] G. E. Totten, M. E. Dakins and R. W. Heins: Cooling curve analysis of synthetic quenchants - a historical perspective, J. Heat Treat., 1988, 6, 87.

DOI: 10.1007/bf02833109

Google Scholar

[2] M. E. Dakins, G. E. Totten and R. W. Heins: Cooling curve shape analysis can help evaluate quenchants , Heat Treat., 1988, 12, 38.

DOI: 10.1007/bf02833109

Google Scholar

[3] S. Segerberg and J. Bodin: Controlling the quench process for more consistent hardening , Heat Treat., 1988, 20, 26-28.

Google Scholar

[4] M. Deck, P. Damay and F. Le Strat: Proc. Conf. ATTT 90 Internationaux de France du Traitement Thermique, Le Mans, France, September 1990, Association Technique de Traitement Thermique, 49.

Google Scholar

[5] J. Bodin and S. Segerberg: Measurement and evaluation of the quenching power of quenching media for hardening , in Proc. 1st Int. Conf. on Quenching and the control of distortion , 1; 1992, Materials Park, OH, ASM International.

Google Scholar

[6] I. Felde, T. Réti, S. Segerberg, J. Bodin, G. S. Sarmiento, G. E. Totten and J. Gu: Numerical methods for safeguarding the performance of the quenching process , in Proc. 14th IFHTSE Conf., Shanghai, China, October 2004, IFHTSE, 519-521.

DOI: 10.4028/www.scientific.net/msf.473-474.335

Google Scholar

[7] I. Felde, T. Réti and G. S. Sarmiento: Effect of smoothing methods on the results of different inverse modeling techniques , in Proc. Int. Symp. on Quenching and control of distortion in honor of Professor s Bozidar Liscic & Hans M. Tensi , 65-73; 2001, Materials Park, OH, ASM International.

Google Scholar

[8] M. Gergely, S. Somogyi, T. Réti and T. Konkoly: Computerized properties prediction and technology planning in heat treatment of steels , in ASM handbook , Vol. 4, Heat treating , 638- 656; 1981, Materials Park, OH, ASM International.

Google Scholar

[9] T. Réti and I. Felde: A non-linear extension of the additivity rule, Comput. Mater. Sci., 1999, 15, 466-482.

DOI: 10.1016/s0927-0256(99)00035-x

Google Scholar