Paper Titles
Effect of Annealing Time on Microstructural Evolution and Corresponding Mechanical Properties of Cold Drawn Pearlitic Steel Wires
p.4632
Austenite Formation in C35 and C45 Alloys
p.4637
Cold Workability and Magnetic Properties of 6% Si Steel
p.4643
Interactions between Recrystallisation and Phase Transformations during Annealing of Cold Rolled Nb-Added TRIP-Aided Steels
p.4649
Influence of Magnetic Field on the Mechanical Properties of Austempered Ductile Iron (ADI)
p.4657
Gas Quenching with Controllable Heat Extraction
p.4663
Morphological Evolutions in Steels during Continuous Rapid Heating
p.4669
Weldability of Ultra-Fine Grained Atmospheric Corrosion Resistant Steel
p.4675
Stress- and Strain Induced Phase Transformations in Pearlitic Steels
p.4681

Influence of Magnetic Field on the Mechanical Properties of Austempered Ductile Iron (ADI)

Article Preview

Abstract:

A novel concept of two-step austempering in a magnetic field has been conceived by this investigator. This twostep process involves first quenching the alloy to a lower temperature after austenitizing and then immediately rising the temperature of the quenching media to a higher temperature and the whole austempering process is carried out in the presence of a high magnetic field. In this investigation, Austempered Ductile Iron (ADI) was processed by this novel two-step austempering process in a high magnetic field of 20 Tesla. The microstructure and the mechanical properties of the ADI processed in a magnetic field has been characterized and compared with ADI processed by conventional process. The results of this investigation indicate significant improvement in the mechanical properties of ADI when Austempered in a high magnetic field. Both yield and tensile strengths were higher in the samples processed in the presence of a magnetic field. Very fine grain ferrite and austenite was obtained in the microstructure. The ferrite content was also significantly higher.

You might also be interested in these eBooks
THERMEC 2006 View Preview

Info:

Periodical:

Materials Science Forum (Volumes 539-543)

Pages:

4657-4662

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.539-543.4657

Citation:

Cite this paper

Online since:

March 2007

Authors:

Susil K. Putatunda

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2007 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J. Dodd, High Strength, High Ductility Ductile Irons, Modern Casting, Vol. 68, No. 5, pp.60-66 (1978).

Google Scholar

[2] R.B. Gundlach and J.F. Janowak, Development of a Ductile Iron for Commercial Austempering, AFS Transaction, Vol. 94, pp.377-388 (1983).

Google Scholar

[3] R.A. Harding and G.N.J. Gilbert, Why the Properties of Ductile Irons should Interest Engineers, British Foundryman, Vol. 79, pp.489-496 (1986).

Google Scholar

[4] I. Schmidt and A. Schuchert, Unlubricated Wear of Austempered Ductile Cast Iron, Zeitschriftjbr Metalkunde, Vol. 78, pp.871-875 (1987).

DOI: 10.1515/ijmr-1987-781208

Google Scholar

[5] M. Johansson, Austenitic Bainitic Ductile Iron, AFS Transaction, Vol. 85, pp. l 17122 (1977).

Google Scholar

[6] S.K. Putatunda et. al., Influence of Microstructure on High Cycle Fatigue Behavior of Austempered Ductile Cast Iron, Materials Characterization, Vol. 30, pp. 22l-234 (1993).

DOI: 10.1016/1044-5803(93)90069-8

Google Scholar

[7] P. Shanmugam, P.P. Rao, K.R. Udupa and N. Venkataraman, Effect of Microstructure on the Fatigue Strength of an Austempered Ductile Iron, J of Materials Science, Vol. 29, pp.4933-4940 (1994).

DOI: 10.1007/bf00356546

Google Scholar

[8] L. Bartosiewicz, S. Duraiswamy, A. Sengupta and S.K. Putatunda, Near Threshold Fatigue Crack Growth behavior of Austempered Ductile Cast Iron, Morris Fine Symposium, TMS, Detroit, pp.135-138 (1991).

Google Scholar

[9] T. Shiokara, On the Austempered Ductile Cast Iron, Their Mechanical properties and Some Practical Applications, 59th Japan Ductile Cast Iron, Association conference, Tokyo, Japan, pp.138-150 (1978).

DOI: 10.31399/asm.hb.v01a.a0006339

Google Scholar

[10] S.K. Putatunda and I. Singh Fracture toughness of unalloyed austempered ductile iron, Journal of Testing & Evaluation, pp.325-332(1995).

DOI: 10.1520/jte11401j

Google Scholar

[11] J. L. Doong and C. Chen Fracture toughness of bainitic-nodular cast iron, Fatigue Fract Engrg Mater Struct pp.155-165 (1989).

DOI: 10.1111/j.1460-2695.1989.tb00520.x

Google Scholar

[12] D.J. Moore, T.N. Rouns and K.B. Rundamn The effect of heat treatment, mechanical deformation and alloying elements on rate of bainitic formation in austempered ductile cast iron, J. Heat Treatment pp.7-24 (1985).

DOI: 10.1007/bf02835485

Google Scholar

[13] S.K. Putatunda Development of Austempered Ductile Cast Iron with Simultaneous High Yield Strength and Fracture Toughness by a Novel Two-step Austempering Process, Materials Science and Engineering A, Vol A 315, pp.70-80, Septempber (2001).

DOI: 10.1016/s0921-5093(01)01210-2

Google Scholar

[14] Jianghuai Yang and S.K. Putatunda Improvement in strength and toughness of austempered ductile cast iron by a novel two step austempering process, Material and Design, Vol. 25, pp.219-230, (2004).

DOI: 10.1016/j.matdes.2003.09.021

Google Scholar

[15] S.K. Putatunda and Jianghuai Yang Improvement in Strength and Toughness of Austempered Ductile iron by Novel Two Step Austempering Process, Materials and Design, Vol 25 No. 1, pp.219-230, February (2004).

DOI: 10.1016/j.matdes.2003.09.021

Google Scholar

[16] Y. Xu, H. Ohtsuka and H. Wada Transaction of the Materials Research Society of Japan, Vol 25, pp.501-504, (2000).

Google Scholar

[17] H. Ohtsuka, Y. Xu, J.K. Choi, Y. Oishi, T. Murai and H. Wada Proceeding of the solid Phase Transformations, Japan Institute of Metals, pp.393-396, (1999).

Google Scholar

[18] H.D. Joo, S.U. Kim, N.S. Shin, Y.M. Koo An effect of magnetic field on phase transformation in Fe-C system, Materials Letter, Vol. 43, pp.225-229, (2000).

DOI: 10.1016/s0167-577x(99)00263-3

Google Scholar

[19] ASTM E-8: Annual book of ASTM standards, Vol 03. 01, pp.542-566, (1998).

Google Scholar

[20] ASTM E-399: Annual book of ASTM standards, Vol 03. 01, pp.745-753, (1999).

Google Scholar

[21] K.B. Rundman and R.C. Klug X-Ray and metallographic studies of an austempered ductile iron, Trans AM Foundrymen Soc, Vol 90, pp.499-508, (1982).

Google Scholar

[22] B.D. Cullity, Elements of X-Ray Diffraction, Addison Wesley, Reading, MA, pp.411-412, (1974).

Google Scholar

[23] W.N. Roberts, Transaction TMS-AIME, Vol 230, p.373, (1964).

Google Scholar

[24] B.D. Cullity, Elements of X-Ray Diffraction, Addison Wesley, Reading, MA, pp.545-556, (1974).

Google Scholar

[25] K.L. Harrymen, D.J. Moore and K.B. Rundman AFS Transaction, Vol 98, pp.471-475, (1990).

Google Scholar