Journal Article

PUBDB-2021-01982

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Suppression and Recovery of Martensitic Transformation and Magnetism in Mechanically and Thermally Treated Magnetic Shape‐Memory Ni−Mn−Ga Melt‐Spun Ribbons

Czaja, P. (Corresponding author) ; Chulist, R.Extern* ; Wójcik, A.Extern* ; Kowalczyk, M. ; Zackiewicz, P. ; Szewczyk, A. ; Schell, N.HZG* ; Maziarz, W.

2021
Deutsche Gesellschaft für Materialkunde Frankfurt, M.

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Please use a persistent id in citations: doi:10.1002/adem.202100075

Abstract: As-melt-spun Ni$_{50.2}$Mn$_{28.3}$Ga$_{21.5}$ ribbons are subjected to milling and subsequentannealing for various times. With progressing milling time, the martensitictransformation is gradually suppressed, magnetic moment deteriorates, whereasthe crystal structure undergoes a body centered tetragonal (bct) into face centeredcubic (fcc) change. High-resolution transmission electron microscopy demonstratesa twin-deformed zone in fcc powder particles, which works to improvecircularity of as-produced powders. Subsequent annealing of as-milled powdersrestores martensitic transformation and magnetism, as well as it reverts the fccinto the original 5M structure. It is hence showcased that due to an allotropictransformation, brittle Heusler alloys are mechanically optimized for 3D printingwithout loss of their functional properties.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Zentrum für Material- und Küstenforschung (HZG)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P07 (PETRA III)

Appears in the scientific report 2021

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; DEAL Wiley ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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