Home Modelling the continuous cooling transformation diagram of engineering steels using neural networks
Article
Licensed
Unlicensed Requires Authentication

Modelling the continuous cooling transformation diagram of engineering steels using neural networks

Part II: Microstructure and hardness
  • Pieter J. van der Wolk , Jiajun Wang , Jilt Sietsma EMAIL logo and Sybrand van der Zwaag
Published/Copyright: February 15, 2022
Become an author with De Gruyter Brill

Abstract

The neural network model of Van der Wolk et al. [1] describes the effect of composition on the phase regions of the continuous cooling transformation (CCT) diagram, yet does not consider the fractions of microstructural components and the hardness data that are often quoted in CCT diagrams. In the present paper, the construction of two more neural network models, one for the fractions of ferrite, pearlite, bainite and martensite in the microstructure, and one for the hardness after cooling, using the data of 338 and 412 diagrams, respectively. The accuracy of each model was found to be similar to the expected experimental error; moreover, the models were found to be mutually consistent, although they have been constructed independently. Furthermore, the trends in these properties for alloying elements can be quantified with the models, and are largely in line with metallurgical expectations.


Dr. Ir. Jilt Sietsma Rotterdamseweg 137, 2628 AL Delft, The Netherlands Tel.: +31 15278 2284 Fax: +31 152786730

References

1 Van der Wolk, P.J.; Wang, J.; Sietsma, J., Van der Zwaag, S.: Z. Metallkd, 93 (2002) 1199.10.3139/146.021199Search in Google Scholar

2 Anon.: Atlas zur Wärmebehandlung der Stähle, Verlag Stahleisen GmbH, Düsseldorf (1954).Search in Google Scholar

3 Rose, A.; Hougardy, H.: Atlas zur Wärmebehandlung der Stähle, Verlag Stahleisen mbH., Düsseldorf (1972).Search in Google Scholar

4 Cias, W.W.: Phase transformation kinetics and hardenability of medium-carbon alloy steels, Climax Molybdenum Company, Greenwich (1973).10.1007/BF02669365Search in Google Scholar

5 Anon.: Iron and Steel Research Institute of Anshan Iron & Steel Company, Metallurgy Industry Publishers, Beijing (1992).Search in Google Scholar

6 Van der Wolk, P.J.: Modelling of the hardenability of engineering steels using neural networks, internal report, Delft University of Technology, Delft (1995).Search in Google Scholar

7 Anon.: Approximate conversion of hardness values for steels, ASTME140.Search in Google Scholar

8 Van der Wolk, P.J.; Vermeulen, W.G.; Van der Zwaag, S.: 2nd Int. Conf. on Modelling of metal rolling processes, The Institute of Materials, London (1996).Search in Google Scholar

9 Anon.: ASM handbook of heat treating, ASM International, Metals Park, OH (1991) 22.Search in Google Scholar

10 Li, M.V.; Niebuhr, D.V.: Metall. Trans. B 29 (1998) 661.10.1007/s11663-998-0101-3Search in Google Scholar

11 Doane, D.V.; Kirkaldy, J.S. (eds.): Hardenability concepts with applications to steels, AIME, New York (1978) 163.Search in Google Scholar

12 Maynier, Ph.; Dollet, J.; Bastien, P.: Revue de Metallurgie (1970) 343.10.1051/metal/197067040343Search in Google Scholar

13 Vermeulen, W.G.; Morris, P.F.; De Weijer, A.P.; Van der Zwaag, S.: Ironmaking & Steelmaking 23 (1996) 433.Search in Google Scholar

14 Wang, J.; Van der Wolk, P.J.; Van der Zwaag, S.: Mater. Trans. JIM 41 (2000) 761.10.2320/matertrans1989.41.761Search in Google Scholar

15 Wang, J.; Van der Wolk, P.J.: J. Mater. Sci. 35 (2000) 4393.10.1023/A:1004865209116Search in Google Scholar

16 Liu, S.K.; Yang, L.; Zhu, D.; Zhang, J.: Metall. Mater. Trans. A 25 (1994) 1991.10.1007/BF02649047Search in Google Scholar

17 Anon.: ASTM Designation A 255–89, Standard Method for End-Quench Test for Hardenability of Steel, in The 49th Annual Book of ASTM Standards, ASTM, Philadelphia, PA (1989) 27.Search in Google Scholar

18 Thewlis, G.: Private communication (1999).Search in Google Scholar

19 Just, E.; Metal Progr. Nov. 96 (1969) 87.10.1007/978-3-642-86991-4_8Search in Google Scholar

20 Vermeulen, W.G.; Van der Wolk, P.J.; De Weijer, A.P.; Van der Zwaag, S.: JMEPEG 5 (1996) 57.10.1007/BF02647270Search in Google Scholar

21 Anon: Metal Progr. 108 (1975) 86.10.2307/3960203Search in Google Scholar

22 Cybenco, G.: Math. Control, Signals, and Systems (1989) 303.10.1007/BF02551274Search in Google Scholar

23 Van der Wolk, P.J.: Modelling the CCT diagram of engineering steels using neural networks, Delft University of Technology, Delft (2001).Search in Google Scholar

Received: 2002-06-25
Published Online: 2022-02-15

© 2002 Carl Hanser Verlag, München

Downloaded on 18.9.2025 from https://www.degruyterbrill.com/document/doi/10.1515/ijmr-2002-0209/html
Scroll to top button