Journal Published Online: 01 April 2019
Volume 48, Issue 4

The Synergetic Effect of Hot Rolling and Heat Treatment on Mechanical Properties: AISI-1045 and JIS-SUP 9 Steel

CODEN: JTEVAB

Abstract

Hot rolling and heat treatment are the two industrial metallurgical applications used with compatible steels to modify mechanical properties. In this article, we studied the combined effect of hot rolling and heat treatment at constant parameters on medium carbon steels with respect to reduced thickness. For this purpose, the precasted round billets (110-mm diameter) of AISI-1045 and the square billet (110 by 110 mm) of JIS-SUP 9 were hot rolled and the thickness was reduced up to 6, 8, and 12 mm and 18, 28, and 45 mm, respectively. The hot rolled billets were subjected to heat treatment. The chemical compositions of the steels were evaluated by optical emission spectroscopy, whereas the microstructures of the samples after hot rolling and heat treatment were observed through metallography. Furthermore, the mechanical properties of the samples were calculated through the tensile test. The results showed a fall in ductility and toughness with respect to reduced thickness and a rise in mechanical strength. It is noteworthy that breaking strength remained unaffected. The JIS-SUP 9 steel is a spring steel, which is the reason for its better mechanical properties (e.g., toughness and ductility) as compared with AISI-1045 steel.

Author Information

Owais, Muhammad
Metallurgy and Materials Engineering Department, Dawood University of Engineering and Technology Karachi, Karachi, Pakistan School of Materials Science and Engineering, Northwestern Polytechnical University, Shaanxi Province, P. R. China
Mehdi, Muhammad
Metallurgy and Materials Engineering Department, Dawood University of Engineering and Technology Karachi, Karachi, Pakistan Hydrogen Laboratory, Korea Institute of Energy Research, Daejeon, Republic of Korea Advanced Energy and System Engineering, University of Science and Technology, Daejeon, Republic of Korea
Hassan, Muhammad Aqib
Metallurgy and Materials Engineering Department, Dawood University of Engineering and Technology Karachi, Karachi, Pakistan Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Perak, Seri Iskander, Malaysia
Jokhio, Muhammad Hayat
Metallurgy and Materials Engineering Department, Dawood University of Engineering and Technology Karachi, Karachi, Pakistan
Raza, Ghulam
Quality Assurance Department, Peoples Steel Mills Limited, Manghopir, Karachi, Pakistan
Pages: 12
Price: $25.00
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Stock #: JTE20170542
ISSN: 0090-3973
DOI: 10.1520/JTE20170542