Microstructure analysis of synthesized iron substituted Ni44Fe6Mn32Al18 Heusler alloy

Hamdan Akbar Notonegoro, Deni Ferdian, Yus Prasetyo, Azwar Manaf

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

Chlorofluorocarbons (CFCs) which emitted to the atmosphere have been recognized to cause damage to the ozone layer. Alternative materials to replace the CFC's role are those which have properties of the magneto caloric effect (MCE) like Heusler alloys. In this paper, we report results of synthesis studies of the magneto caloric materials based on Ni-Mn-Al which possesses the structure of Heusler alloy. Crystallographically, the alloy is a single phase system with a general formula of X2YZ which possesses the L21 (the Strukturberichte-SB) crystal structure. An iron substituted Ni44Fe6Mn32Al18 alloy was successfully casted by means of melting in a vacuum arc melting furnace. Series of microstructure as cast alloy which studied under SEM observation and EDAX analysis reveals that the cast sample consisted of at least 4 phases. These are the main phase of Ni-Mn-Al system with the additional minor phases of Al rich, Al-oxide and Al deficit main phases, respectively. Annealing process at 900 °C in oxygen free atmosphere for 48 hours have transformed dendritic structure into equaixed grain with fine particle scattered on the entire grain surfaces.

Original languageEnglish
Title of host publicationInternational Symposium on Current Progress in Mathematics and Sciences 2015, ISCPMS 2015
Subtitle of host publicationProceedings of the 1st International Symposium on Current Progress in Mathematics and Sciences
EditorsTerry Mart, Djoko Triyono
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413764
DOIs
Publication statusPublished - 19 Apr 2016
Event1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015 - Depok, Indonesia
Duration: 3 Nov 20154 Nov 2015

Publication series

NameAIP Conference Proceedings
Volume1729
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference1st International Symposium on Current Progress in Mathematics and Sciences, ISCPMS 2015
CountryIndonesia
CityDepok
Period3/11/154/11/15

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