RT Journal Article
T1 Phase diagrams in alternative hard materials: Validation of thermodynamic simulation through high temperature x-ray diffraction, differential thermal analysis and microstructural characterization
A1 Nicolás Morillas, María de
A1 Pereira, L.
A1 Penoy, M.
A1 Bertalan, C.
A1 Useldinger, R.
A1 Llanes, L.
A1 Gordo Odériz, Elena
AB In this investigation, Ti(C,N)-FeNiCr systems were designed using Thermo-Calc® software. Materials were processed by conventional powder metallurgy, employing different carbon additions to study a wide range of the phase diagram as well as the effect of C in the sintered samples. Specimens were extensively characterised in terms of density, magnetic and mechanical properties, and microstructural features. Simulation approach was validated by means of Differential Thermal Analysis (DTA) and High-Temperature X-Ray Diffraction (HT-XRD), from room temperature up to 1200 °C for each composition, comparing phases obtained for each temperature and composition with predicted ones. Results showed excellent consonance between Thermo-Calc® and XRD phases, except for precipitation of secondary carbides, which appeared in the simulation but not in the sintered samples. Moreover, variation of C content demonstrated to have a direct effect in the microstructural homogenization of the final specimens.
PB Elsevier
SN 0263-4368
YR 2021
FD 2021-06
LK https://hdl.handle.net/10016/32526
UL https://hdl.handle.net/10016/32526
LA eng
NO The current study was supported by the Spanish Government through the projects MAT2015-70780-C4-P and PID2019-106631GB-C41/C43, and grant BES-2016-077340, and the Regional Government of Madrid through the program ADITIMAT, ref. S2018/NMT-4411. The authors would like to thank BASF for providing the iron powder used in this investigation.
DS e-Archivo
RD 1 sept. 2024