Martensitic Transformation in Spark Plasma Sintered Compacts of Ni-Mn-Ga Powders Prepared by Spark Erosion Method in Cryogenic Liquids-Reference-Cited by-同舟云学术

Martensitic Transformation in Spark Plasma Sintered Compacts of Ni-Mn-Ga Powders Prepared by Spark Erosion Method in Cryogenic Liquids

Published:2013-01 Issue: Volume:738-739 Page:451-455
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Ochin Patrick¹,Gilchuk Andrii V.²,Monastyrsky Gennady E.²,Koval Yuri³,Shcherba Anatolij A.⁴,Zaharchenko Sergij N.⁴

Affiliation:

1. Centre d'Etude de Chimie Métallurgique, CNRS-Université Paris XII

2. NTUU “KPI”

3. National Academy of Sciences of Ukraine

4. IED of NASU

Abstract

Ni-Mn-Ga-based magnetic shape memory materials were elaborated by spark plasma sintering method. Micron sized particles were prepared by spark-erosion method in liquid argon and liquid nitrogen from preliminary melted magnetic shape memory master alloys Ni-28.5Mn-22.5G at.%. Powders were annealed in H2 gas atmosphere before sintering. Depending on the cryogenic liquids the morphology of particles alternated between spherical solid and hollow balls. The conditions of spark eroded powder elaboration strongly effect on the morphology, martensitic behavior, and structure of sintered samples. In particularly, martensite has 5M structure in bulk material; 14M and non-modulated martensites were found in annealed powders and sintered compacts correspondingly.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.738-739.451.pdf

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