Crystallization Kinetics and Structure Evolution during Annealing of Ni-Co-Mn-In Powders Obtained by Mechanical Alloying

The crystallization kinetics and structure evolution during annealing of the Ni(45.5)Co(4.5)Mn(36.6)In(13.4) (at. %) powders produced by mechanical alloying (MA) was investigated. After 70 h and 100 h of MA, the powder consisted of a mixture of amorphous and nanocrystalline body-centered cubic (bcc)...

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Detalles Bibliográficos
Autores principales: Matyja, Edyta, Prusik, Krystian, Zubko, Maciej, Świec, Paweł, Dercz, Grzegorz, Loskot, Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9865905/
https://www.ncbi.nlm.nih.gov/pubmed/36676381
http://dx.doi.org/10.3390/ma16020645
Descripción
Sumario:The crystallization kinetics and structure evolution during annealing of the Ni(45.5)Co(4.5)Mn(36.6)In(13.4) (at. %) powders produced by mechanical alloying (MA) was investigated. After 70 h and 100 h of MA, the powder consisted of a mixture of amorphous and nanocrystalline body-centered cubic (bcc) phases. We observed the relaxation in the as-received powder. The relaxation temperature (T(re)) increases logarithmically with the annealing time. Annealing above 440 °C results in (1) ordering of L2(1), (2) dissolution of the residual Ni and Mn, (3) tetragonal MnNi phase formation and (4) γ phases precipitation. The activation energies of the B2 → L2(1) and Mn (α-Mn) → MnNi (P4/mmm) transformations were calculated.

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