An Investigation on the Microstructure and Mechanical Properties of Hot Rolled Medium Manganese TRIP Steel

Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

Microstructure and mechanical properties of hot rolled medium manganese TRIP steel were investigated in the present study. The heat treatment schedule was intercritical annealing at various temperature (640, 665 and 690 °C) for 1 h and water quenched. The results showed that an excellent combination of high strength and adequate ductility was obtained. As the intercritical annealing temperature increased, the ultimate tensile strength and strain hardening rate increased, while the total elongation increased firstly and then decreased. A large amount of austenite could be retained at room temperature by adopting the method of intercritical annealing. Austenite stability and initial microstructure before deformation played an important role in the mechanical properties and strain hardening rate.

Keywords

TRIP steel Intercritical annealing Austenite stability 

References

  1. 1.
    Chung JH, Jeon JB, Chang YW (2010) Work-hardening and ductility enhancement mechanism of cold rolled multiphase TRIP steels. Met Mater Int 16:533–541CrossRefGoogle Scholar
  2. 2.
    Zaefferer S, Ohlert J, Bleck W (2004) A study of microstructure, transformation mechanisms and correlation between microstructure and mechanical properties of a low alloyed TRIP steel. Acta Mater 52:2765–2778CrossRefGoogle Scholar
  3. 3.
    De Cooman BC (2004) Structure–properties relationship in TRIP steels containing carbide-free bainite. Curr Opin Solid State Mater Sci 8:285–303CrossRefGoogle Scholar
  4. 4.
    Lee YK (2012) Microstructural evolution during plastic deformation of twinning-induced plasticity steels. Scr Mater 66:1002–1006CrossRefGoogle Scholar
  5. 5.
    Jin JE, Lee YK (2012) Effects of Al on microstructure and tensile properties of C–bearing high Mn TWIP steel. Acta Mater 60:1680–1688CrossRefGoogle Scholar
  6. 6.
    Jung JE, Park J, Kim JS, Jeon JB, Kim SK, Chang YW (2014) Temperature effect on twin formation kinetics and deformation behavior of Fe–18Mn–0.6C TWIP steel. Met Mater Int 20:27–34CrossRefGoogle Scholar
  7. 7.
    Shi J, Sun XJ, Wang MQ, Hui WJ, Dong H, Cao WQ (2010) Enhanced work-hardening behavior and mechanical properties in ultrafine-grained steels with large-fractioned metastable austenite. Scr Mater 63:815–818CrossRefGoogle Scholar
  8. 8.
    Sun RM, Xu WH, Wang CY, Shi J, Dong H, Cao WQ (2012) Work hardening behavior of ultrafine grained duplex medium-Mn steels processed by ART-annealing. Steel Res Int 83:316–321CrossRefGoogle Scholar

Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  1. 1.School of Materials Science and Engineering, Northeastern UniversityShenyangChina

Personalised recommendations