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    Volume 48, Issue 4 (July 2020)

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

    (Received 17 September 2017; accepted 3 January 2019)

    Published Online: 2019

    CODEN: JTEVAB

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    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,

    School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’anShaanxi Province,

    Mehdi, Muhammad
    Metallurgy and Materials Engineering Department, Dawood University of Engineering and Technology Karachi, Karachi,

    Hydrogen Laboratory, Korea Institute of Energy Research, Daejeon,

    Advanced Energy and System Engineering, University of Science and Technology, Daejeon,

    Hassan, Muhammad Aqib
    Metallurgy and Materials Engineering Department, Dawood University of Engineering and Technology Karachi, Karachi,

    Department of Mechanical Engineering, Universiti Teknologi PETRONAS, Perak, Seri Iskander

    Jokhio, Muhammad Hayat
    Metallurgy and Materials Engineering Department, Dawood University of Engineering and Technology Karachi, Karachi,

    Raza, Ghulam
    Quality Assurance Department, Peoples Steel Mills Limited, Manghopir, Karachi,


    Stock #: JTE20170542

    ISSN:0090-3973

    DOI: 10.1520/JTE20170542

    Author
    Title The Synergetic Effect of Hot Rolling and Heat Treatment on Mechanical Properties: AISI-1045 and JIS-SUP 9 Steel
    Symposium ,
    Committee A01