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Microstructural Evolution of High Dimension Rings of Steel AISI 4140

Published online by Cambridge University Press:  31 January 2012

E. Martínez ,
C. Márquez ,
J. Rodríguez ,
F. Fernández ,
J. Cárdenas  and
A. Pérez
E. Martínez
Affiliation:
Universidad Autónoma de Nuevo León, FIME, Ave. Universidad s/n, Cd. Universitaria, San Nicolás de los Garza, N.L. 66450 México. Email: e.martinez2205@hotmail.com
C. Márquez
Affiliation:
Universidad Autónoma de Nuevo León, FIME, Ave. Universidad s/n, Cd. Universitaria, San Nicolás de los Garza, N.L. 66450 México. Email: e.martinez2205@hotmail.com Frisa Forjados, S.A. de C.V. P.O. Box 1273, Monterrey, N.L. 64000 México
J. Rodríguez
Affiliation:
Frisa Forjados, S.A. de C.V. P.O. Box 1273, Monterrey, N.L. 64000 México
F. Fernández
Affiliation:
Frisa Forjados, S.A. de C.V. P.O. Box 1273, Monterrey, N.L. 64000 México
J. Cárdenas
Affiliation:
Frisa Forjados, S.A. de C.V. P.O. Box 1273, Monterrey, N.L. 64000 México
A. Pérez
Affiliation:
Universidad Autónoma de Nuevo León, FIME, Ave. Universidad s/n, Cd. Universitaria, San Nicolás de los Garza, N.L. 66450 México. Email: e.martinez2205@hotmail.com
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Abstract

This paper presents the results of the analytical study of the microstructural evolution of forged and rolled rings with a diameter greater than 2 meters, since the raw material, set-up forgings, ring rolling and heat treatments, including normalizing, quenching and tempering. Also, great care will be taken on the chemical micro-segregation. Four rings, were instrumented with 20 thermocouples each one in order to follow the thermal profile during heating and quenching. Cooling rates will be used to predict the microstructure developed under the different heat treatments and it will be compared at different positions inside the rings. It can be seen that the cooling curves obtained show no presence of soft phases, as shown in the microstructures in the figure shown below. With the results of microstructure obtained, which show martensitic structure to a greater extent, it meets the desirable mechanical properties, which are shown below.

Keywords

SteelMicrostructureStressPolymerStructural
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1372: Symposium S3 – Structural and Chemical Characterization of Metal Alloys and Compounds—2011 , 2012 , imrc-1372-s3-p82
Copyright
Copyright © Materials Research Society 2012

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References

REFERENCES

1. Walton, H. W.. Understanding and controlling distortion in large bearing rings - some practical aspects. The Torrington Company, Rutherfordton, North Carolina. 2nd International Conference on Quenching and the Control of Distortion, Cleveland Ohio, p. 143–147. (1996).Google Scholar
2. Totten, E., Polymer Quenchants: The Basics , Adv. Mat. & Proc , 137, 51–53 (1990).Google Scholar
3. French, H.J.. A study of the quenching of Steels . Trans. A.S.S.T ., 646–727(1930).Google Scholar
4. Tagaya, M. and Tamura, I., Mem. Inst. Sci. Ind. Res., Osaka University, 85-107 (1952).Google Scholar
5. Schwalm, M. and Tensi, H.M., Heat Mass Transfer Metallic Systems, Proceedings of Int. Cent. Heat Mass Transfer, 563–572. (1981).Google Scholar
6. Wolf, M.M., Historical aspects and key technologies, The Making, Shaping and Treating of Steel (Ironmaking Volume, 11th. Edition), AISE Steel Foundation, (in press). 240–264(1999).Google Scholar
7. Cook, W.T., Review of Selected Steel-related Factors Controlling Distortion in Heat treatable Steels , Heat Treatment of Metals , 26, 27–36 (1999).Google Scholar
8. Totten, G.E., Bates, C.E. and Clinton, N.A., Cooling Curve Analysis – Chapter 2, in Handbook of Quenchants and Quenching Technology, ASM International, Materials Park, OH, p. 69-128. (1993)Google Scholar
9. Webster, G.M. and Totten, G.E., “ Cooling Curve Analysis - Data Acquisition”, in Heat Treating: Proceedings of the 16th Conference, Ed. Dossett, J.L. and Luetje, R.E., ASM International, Materials Park, OH, p. 427–434 (1996)Google Scholar
10. Totten, G., Howes, E., and , Steel, M. A.H Heat Treatment Handbook. Marcel Dekker, Inc. p. 157 (1997)Google Scholar
11. Ke-Jian, Z. Reduction and Elimination of Quench Distortion by CRB Method, Beijing HuaLi Fine Chemical Company Ltd. Beijing 102200, China.Google Scholar
12. Pérez, A., Márquez, C., Martínez, E.. Isothermal Transformation Diagrams for Steel 4140 considering Carbon Equivalent. Internal Report. UANL-FIME, México. (2011).Google Scholar
13. Márquez, C., Martínez, E., Rodríguez, J., Fernández, F. and Pérez, A.. Heat treatment evolution of high dimension rings of steel AISI 4140. IMRS 2011, Cancún, México, August 2011 (unpublished).Google Scholar