Abstract
The objective of this study is to investigate the effect of austenizing temperature on high-carbon steels. Two types of steels, i.e., AISI-440C and AISI-A2 were selected in this regard. Specimens of these steels were austenized from 950 to 1250°C and then air-cooled; this resulted in major microstructural changes in the specimens. These microstructural changes altered the electrical resistivity and magnetic permeability of the materials. XRD studies revealed that about 80% austenite formed when the subject steels were heat-treated to 1200°C. Eddy current technique was applied for the assessment of these microstructural changes, which influence the eddy current response in the coil. Similar hardness trend was observed for both steels. The magnitude of eddy current can be used to estimate the volume fraction of phases present in these steels. This study revealed that a good correlation existed between eddy current measurements and microstructural changes in these steels.
Similar content being viewed by others
References
Avner, S.H.: Introduction to Physical Metallurgy, 2nd edn., pp. 404–414. McGRAW-Hill Kogakusha, Ltd, Japan (1974)
Yaso M., Hayashi S., Morito S., Ohba T., kunichika k., Murakami K.: Characteristics of retained austenite in quenched high C-high Cr alloys steels. Mater. Trans. 50, 275–279 (2009)
Gur H., Yildiz I.: Non-destructive investigation on the effect of precipitation hardening on impact toughness of 7020 Al–Zn–Mg alloy. Mater. Sci. Eng. A 382, 395–404 (2004)
Ruud, C.O.; Green, R.E.: Nondestructive Methods for Material Property Determination, pp. 89–101. Plenum press, New York (1983)
Habiby F., Siddiqui T.N., Khan S.H., Ul Haq A., Khan A.Q.: Austenite determination by eddy current measurements in a maraging steel. NDT Int. 25, 145–146 (1992)
Zerogoug M., Lebaili S., Boudjella H., Boudjella H.: Relation between mechanical micro-hardness and impedance variations in eddy current testing. NDT&E 37A, 65–72 (2004)
Konoplyuk S., Abe T., Uchimoto T., Takagi T., Kurosawa M.: Characterization of ductile cast iron by eddy current method. NDT&E 38, 623–626 (2005)
Mukhopadhyay T., Kanti Dey T., Chowdhury R., Chokrabarti A.: Structural damage identification using response surface-based multi-objective optimization: a comparative study. Arab. J. Sci. Eng. 40(4), 1027–1044 (2015)
Rajkumar K.V., Rao B.P.C., Sasi S., Kumar A., Jaykumar T., Raj B., Ray K.: Characterization of aging behavior in M250 grade maraging steel using eddy current non-destructive methodology. Mater. Sci. Eng. A 464, 233–240 (2007)
Khan S.H., Ali F., Khan A.N., Iqbal M.A.: Pearlite determination in plain carbon steel by eddy current method. J. Mater. Process. Technol. 200, 316–318 (2008)
Khan S.H., Ali F., Khan A.N., Iqbal M.A.: Investigation of high strength steel bending. Eng. Fail. Anal. 16, 128–135 (2009)
Khan A.N., Khan S.H., Ali F., Iqbal M.A.: Evaluation of ZrO2–24MgO ceramic coating by eddy current method. Comput. Mater. Sci. 44, 1007–1012 (2009)
Davis Joseph, R.: Heat ResistantMaterials, p. 227. ASM Specialty Hand Book, Ohio (2004)
Cullity B.D.: Elements of X-Ray Diffraction, 3rd edn. Addison-Wesley Publishing Company, Inc., USA (1967)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Khan, S.H., Khan, A.N. Effect of Austenizing Temperature on High-Carbon Steels and Its Characterization by Eddy Current Nondestructive Technique. Arab J Sci Eng 40, 2103–2110 (2015). https://doi.org/10.1007/s13369-015-1681-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s13369-015-1681-2