Journal Published Online: 12 August 2008
Volume 5, Issue 8

Comparison of Thermal Expansion Behavior of Phosphoric Irons with Conventional Concrete Reinforcement Steel

CODEN: JAIOAD

Abstract

Phase transformations using dilatometry and microstructures in two phosphoric irons (Fe-0.11P-0.028C, Fe-0.49P-0.022C) and a low carbon steel (Fe-0.148C-0.542Mn–0.128Si), all in weight percent, were studied. The linear thermal expansion coefficients of phosphoric irons was comparable to that of carbon steel. The phase transformation temperatures were not well defined in the case of phosphoric irons. While low-phosphorus steel exhibited single-phase microstructure, high-phosphorus steel exhibited dual-phase ferritic microstructure consisting of prior ferrite and prior austenite. The low carbon steel revealed a ferrite-pearlite microstructure at the center of the cross section and tempered martensite at the rim.

Author Information

Sahoo, Gadadhar
R&D Center for Iron and Steel, Steel Authority of India Limited, Ranchi, India
Balasubramaniam, R.
Department of Materials and Metallurgical Engineering, Indian Institute of Technology, Kanpur, India
Mungole, M.
Department of Materials and Metallurgical Engineering, Institute of Technology, Kanpur, India
Pages: 7
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Stock #: JAI101708
ISSN: 1546-962X
DOI: 10.1520/JAI101708