Submitted on: 20 July 2017.
Revised on: 15 October 2017.
Accepted on: 02 November 2017.
___________________JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
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Submitted on: 09 November 2016.
Revised on: 22 February 2017.
Accepted on: 17 March 2017.
___________________JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL