|About this Abstract
||2020 TMS Annual Meeting & Exhibition
||Advanced High Strength Steels IV
||J-7: Transformation Kinetics in a Trip Steel during the Plastic Deformation by Tension and Compression
||Jose Pacheco, Pedro Garnica, Yadira Solana, Lesliee Espino, Jorge Navarro
|On-Site Speaker (Planned)
The transformation kinetics of the retained austenite (RA) of a TRIP steel was determined during the plastic deformation by tension and compression, the tests were carried out at room temperature at different deformation percentages. In the induction furnace, a commercial steel was melted, to which ferroalloys were added, obtaining 0.21% C, 1.22% Mn, 2.16% Si. An intercritical annealing and isothermal treatment was carried out. Tension test tubes (ASTM-E8) were machined, as well as specimens to be laminated at room temperature.
The micrographs show the presence of: ferrite, bainite, RA/martensite. By means of XRD the RA was identified and quantified (15.6%), this was reduced to 7.1% after the stress test. The evaluation of the RA after each rolling pass shows that before 20% of deformation the volume of RA was reduced by 47%, and in the tension test the RA volume is reduced by 59% with the same plastic deformation.
||Planned: Supplemental Proceedings volume