NiAl shape memory alloy by powder metallurgy method

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)497-500
Journal / PublicationMaterials Science Forum
Volume327
Publication statusPublished - 2000

Conference

TitleProceedings of the 1999 International Symposium and Exhibition on Shape Memory Materials (SMM'99)
CityKanazawa, Jpn
Period19 - 21 May 1999

Abstract

Mechanical alloying in high-energy ball-milling machine was used to fabricate the NiAl shape memory alloy. The effect of milling time on the mechanical properties was investigated. The microstructures and phase transformations of NiAl were studied by scanning electron microscope (SEM), x-ray diffraction (XRD), differential scanning calorimetry (DSC) and dynamic thermal analysis (DTA). Lamella micro-structures was found in the SEM examination and they were confirmed to have the martensite structure by XRD analysis. Results from DSC thermal analysis revealed that the sintered-compact exhibited thermoelastic transformation. Besides, the martensitic transformation was found to have suppressed by the presence of Ni5Al3 precipitates in some of the ball-milled specimens.

Citation Format(s)

NiAl shape memory alloy by powder metallurgy method. / Man, C. H.; Chung, C. Y.
In: Materials Science Forum, Vol. 327, 2000, p. 497-500.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review