Variation in Mechanical Properties of SAE 1006 Interstitial Free (IF) Steel Sheets During Cold Rolling

Ali Dad Chandio; Aqeel Ahmed Shah; Iftikhar Ahmed Channa; Shahid Hussain Abro; Y. Raza; Muhammad Rizwan; Muhammad Ali; K. Iqbal; Muhammad Basit Ansari; Waqas Salman

doi:10.24949/njes.v13i2.623

Authors

Ali Dad Chandio Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Aqeel Ahmed Shah Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Iftikhar Ahmed Channa Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Shahid Hussain Abro Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Y. Raza Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Muhammad Rizwan Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Muhammad Ali Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
K. Iqbal Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Muhammad Basit Ansari Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan
Waqas Salman State Key Laboratory of Solidification Processing, School of Material Science and Engineering, Northwestern Polytechnical University, Xian 710072, China.

DOI:

https://doi.org/10.24949/njes.v13i2.623

Keywords:

IF steel, Hall-Petch Equation, Formability, SPCG, JIS standards

Abstract

This research aims to study the variation in properties of hot-rolled SAE 1006 IF steel sheets during cold rolling to reveal the factors causing the decrease in formability of SPCG steel sheets during deep drawing. Results have shown that pickling does not affect the mechanical properties; however, cold rolling results in an increase in hardness, tensile strength and yield strength. Stress relieve annealing results in coarsening and homogenizing of grains which reduces brittleness and impart ductility. Temper rolling causes an increment in mechanical parameters again, improve surface hardness and flatness. By analyzing the microstructure and comparing it with the HESCO sample, it is revealed that there are still some elongated grains found along with coarse grains after annealing. Soaking time is not sufficient for the growth of homogenized structure, resulting in decreased ductility and formability during deep drawing.

Author Biography

Muhammad Basit Ansari, Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi, Pakistan

Metallurgical Engineering Department

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