Effect of Solid Solution Treatment on the Microstructure and Properties of Fe-Mn-Al Light-Weight Steel

Abstract:

A study was made of the effects of solid solution treatment on the properties of hot rolled Fe-Mn-Al steel and on the microstructure transformation. In the steel, the austenite matrix and ferrite duplex phases were confirmed by micrographs and X-ray diffraction. It was indicated that the hot rolled Fe-Mn-Al steel (6.55g/cm³ in density) is with mechanical properties of tensile strength 1315.6MPa, elongation 14.60%. The tensile strength decreases with increasing temperature. The tensile test displays an outstanding combination of high strength and ductility at room temperature due to continuous strain hardening behavior. The product of tensile strength and ductility can reach 46.5GPa·%. Solution treatment contributes to the dissolution of precipitate, austenite grain growth and banded ferrite crushing.

• Periodical: Materials Science Forum (Volume 788)
• Pages: 311-316
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.788.311
• Online since: April 2014
• Authors: Fu Qiang Yang, Ren Bo Song*, Lei Feng Zhang, Chao Zhao
• Keywords: Ductility, Fe-Mn-Al Steel, High Strength, Light Weight, Solid Solution Treatment

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