| Naslov: | Cast microstructure of a complex concentrated noble alloy ▫$Ag_{20}Pd_{20}Pt_{20}Cu_{20}Ni_{20}▫$ |
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| Avtorji: | ID Terzić, Lidija (Avtor)
ID Rudolf, Rebeka (Avtor)
ID Majerič, Peter (Avtor)
ID Anžel, Ivan (Avtor) |
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| Datoteke: |  materials-15-04788-v2.pdf (4,00 MB)
MD5: 566BD39EE5D8B4F41FFAC672A9E3417C
 https://www.mdpi.com/1996-1944/15/14/4788
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| Jezik: | Angleški jezik |
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| Vrsta gradiva: | Članek v reviji |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: | FS - Fakulteta za strojništvo
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| Opis: | A complex concentrated noble alloy (CCNA) of equiatomic composition (Ag20Pd20Pt20Cu20Ni20
–20 at. %) was studied as a potential high—performance material. The equiatomic composition
was used so that this alloy could be classified in the subgroup of high—entropy alloys (HEA). The
alloy was prepared by induction melting at atmospheric pressure, using high purity elements. The
degree of metastability of the cast state was estimated on the basis of changes in the microstructure
during annealing at high temperatures in a protective atmosphere of argon. Characterisation of the
metallographically prepared samples was performed using a scanning electron microscope (SEM)
equipped with an energy dispersive spectrometer (EDS), differential scanning calorimetry (DSC),
and X–ray diffraction (XRD). Observation shows that the microstructure of the CCNA is in a very
metastable state and multiphase, consisting of a continuous base of dendritic solidification—a matrix
with an interdendritic region without other microstructural components and complex spheres. A
model of the probable flow of metastable solidification of the studied alloy was proposed, based on
the separation of L—melts into L1
(rich in Ni) and L2
(rich in Ag). The phenomenon of liquid phase
separation in the considered CCNA is based on the monotectic reaction in the Ag−Ni system. |
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| Ključne besede: | complex concentrated noble alloy, high—entropy alloy, metastability |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Poslano v recenzijo: | 08.06.2022 |
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| Datum sprejetja članka: | 06.07.2022 |
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| Datum objave: | 08.07.2022 |
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| Založnik: | MDPI |
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| Leto izida: | 2022 |
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| Št. strani: | 14 str. |
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| Številčenje: | Vol. 15, iss. 14 (4788) |
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| PID: | 20.500.12556/DKUM-92209  |
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| UDK: | 621.74:620.1 |
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| COBISS.SI-ID: | 114803715 |
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| DOI: | 10.3390/ma15144788 |
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| ISSN pri članku: | 1996-1944 |
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| Avtorske pravice: | © 2022 by the authors. |
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| Datum objave v DKUM: | 20.03.2025 |
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| Število ogledov: | 160 |
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| Število prenosov: | 19 |
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| Metapodatki: |    |
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| Področja: | Ostalo
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