Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7975248 | Materials Science and Engineering: A | 2016 | 9 Pages |
Abstract
We have studied here the microstructural evolution and deformation behavior in two hot-rolled Fe-6Mn-3Al-0.2C (6Mn steel) and Fe-8.5Mn-3Al-0.2C (8.5Mn steel) transformation induced plasticity (TRIP) steels. Excellent combination of mechanical properties including total elongation (TEL) of 39.3%, ultimate tensile strength (UTS) of 1112 MPa and UTSÃTEL of 43.7 GPa% were obtained in 8.5Mn steel subjected to intercritical hardening at 750 °C and tempering at 200 °C. The increase in the Mn-content in the experimental steel led to increase in the volume fraction of austenite and change in austenite morphology. Non-uniform Mn distribution in austenite with varied morphology resulted in different degree of austenite stability and led to discontinuous TRIP effect, contributing to the best combination of mechanical properties in 8.5Mn-750 steel.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Z.C. Li, H. Ding, R.D.K. Misra, Z.H. Cai, H.X. Li,