Evaluation of in-situ deformation experiments of TRIP steel

4th International Conference Recent Trends in Structural Materials

Procházka, J.^1 ; Kuerová, L.^1 ; Bystrianský, M.^1

RTI, UWB in Pilsen, Universitni 8, Pilsen, EU

30614, Czech Republic^1

关键词: Annealing temperatures;    Chemical compositions;    Deformation stages;    Electron backscattering diffraction;    In-situ tensile testing;    Reference material;    Situ deformation;    Transformation induced plasticity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/179/1/012059/pdf
DOI  :  10.1088/1757-899X/179/1/012059

来源: IOP

【 摘 要 】

The paper reports on the behaviour of low alloyed TRIP (transformation induced plasticity) steel with Niobium during tensile test. The structures were analysed using in-situ tensile testing coupled with electron backscattering diffraction (EBSD) analysis carried out in scanning electron microscope (SEM). Steel specimens were of same chemical composition; however three different annealing temperatures, 800 C, 850 C and 950 C, were applied to the material during the heat treatment. The treatment consisted of annealing for 20 minutes in the furnace; cooling in salt bath after the heating and holding at 425 C for 20 minutes for all the samples. Untreated bar was used as reference material. Flat samples for deformation stage were cut out of the heat-treated bars. In situ documentation of microstructure and crystallography development were carried out during the deformation experiments. High deformation lead to significant degradation of EBSD signal.