2026-04-13T02:55:35Zhttps://recercat.cat/oai/requestoai:recercat.cat:10256/224532024-10-29T20:42:05Zcom_2072_452955com_2072_2054col_2072_453063
RECERCAT
author
Zaara, Kaouther
author
Daza Collier, Jason
author
Ben Mbarek, Wael
author
Suñol Martínez, Joan Josep
2022-12-24
High-energy ball milling was used to produce two Fe-X-B (X = Nb, NiZr) nanocrystalline alloys. X-ray diffraction (XRD), differential scanning calorimetry (DSC), and vibrating sample magnetometry (VSM) were used to analyze the microstructure, thermal, and magnetic characteristics of the milled powders, the agglomerated particles (also generated during the milling process), and the compacted specimens of both alloys. The main crystallographic phase is always a bcc Fe-rich solid solution; whereas a minor Nb(B) phase is detected on powders and agglomerated particles in the Fe80Nb8B12 alloy. The crystalline size of the Fe80(NiZr)8B12 alloy is between 11 and 14 nm, whereas in the Fe80Nb8B12 alloy, it ranges between 8 and 12 nm. Microstrain and dislocation density are higher in agglomerated samples for both alloys than in milled powders. Thermal analysis detects structural relaxation and crystal growth exothermic processes with high dispersion in the temperature intervals and in the calculated apparent activation energy of the main crystallization process. Regarding magnetic behavior, the coercivity values of all powdered-agglomerated specimens were around 800 A/m. The coercivity is higher in compacted sample, but controlled annealing favors enhanced soft behaviorThis research was founded by Spanish Mineco under project PID2020-115215RB-C22
Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess
Nanopartícules
Nanoparticles
Aliatge mecànic
Mechanical alloying
Aliatges magnètics
Magnetic alloys
Structural, thermal and magnetic analysis of two Fe-X-B (X = Nb, NiZr) nanocrystalline alloy
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion peer-reviewed