NiAl shape memory alloy by powder metallurgy method
Description
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. (orig.)
Additional details
Publishing Information
- Journal Title
- Materials Science Forum
- Journal Volume
- 327-328
- Journal Page Range
- p. 497-500
- ISSN
- 0255-5476
- CODEN
- MSFOEP
Conference
- Title
- International symposium and exhibition on shape memory materials (SMM '99)
- Dates
- 19-21 May 1999
- Place
- Kanazawa (Japan)
INIS
- Country of Publication
- Switzerland
- Country of Input or Organization
- Switzerland
- INIS RN
- 31024920
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- ALUMINIUM ALLOYS; DENSITY; DIFFERENTIAL THERMAL ANALYSIS; GRAIN SIZE; HARDNESS; MARTENSITIC STEELS; METALLURGICAL EFFECTS; NICKEL ALLOYS; POWDER METALLURGY; PRECIPITATION; SCANNING ELECTRON MICROSCOPY; SHAPE MEMORY EFFECT; SINTERING; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; FABRICATION; IRON ALLOYS; IRON BASE ALLOYS; MECHANICAL PROPERTIES; METALLURGY; MICROSCOPY; MICROSTRUCTURE; PHYSICAL PROPERTIES; SCATTERING; SEPARATION PROCESSES; SIZE; STEELS; THERMAL ANALYSIS; TRANSITION ELEMENT ALLOYS
Optional Information
- Notes
- 12 refs.