Effect of Aluminum Addition on the Microstructure and Mechanical Properties of High Manganese Austenitic Steel Fe-18Mn-0.6C

مهندسی متالورژی و مواد

Article 2, Volume 28, Issue 1 - Serial Number 15, March 2017, Pages 13-22   

Document Type: Original Articles

DOI: 10.22067/ma.v28i1.32351

Authors

Saeed Majidi¹; Shahram Kheirandish¹; Majid Abbasi^{* 2}

¹Iran University of Science and Technology

²Babol Noshirvani University of Technology

Abstract

In this research, the effect of 2.3 wt.% aluminum addition on the microstructure and tensile properties of high manganese austenitic steel Fe-18Mn-0.6C was studied. For this purpose, the samples were investment cast, homogenized and hot rolled. Tensile testing was carried out at ambient temperature. Microstructural investigations and fractography on the steel samples were carried out using an optical microscope and a scanning electron microscope. The results showed that the aluminum addition increases the austenite grain size. In addition, 2.3 wt.% aluminum addition increases the yield strength and plastic strain, decreases the ultimate tensile strength and eliminates the serrated flow during plastic deformation.

Keywords

TWIP steel; Aluminum; Stacking fault energy; Mechanical twinning

Supplementary Files

2-Majidi_AK_EDITS.pdf

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