Published May 1991
| Version v1
Journal article
The study of constitutional phases in a Ni47Ti44Nb9 shape memory alloy
Creators
- 1. Dept. of Metals and Technology, Harbin Inst. of Tech. (China)
Description
The constitutional phases and microstructure of Ni47Ti44Nb9 alloy have been studied by means of optical microscopy, electron probe X-ray microanalyses (EPMA) and X-ray diffraction. It has been shown that the microstructure of the experimental alloy consists of three phases:TiNi matrix, niobium-rich phase and Ti3(Ni, Nb)2 compound. The Nb-rich phase is determined to be β-Nb with bcc structure containing a small amount of Ni and Ti. The β-Nb is a soft phase which forms a eutectic structure with TiNi phase during solidification. After hot working the soft β-Nb phase is dispersed in TiNi matrix and gives rise to a wide transformation hysteresis in the alloy. The Ti3(Ni, Nb)2 is a harder and embrittlemental phase. (orig.)
Additional details
Publishing Information
- Journal Title
- Materials Chemistry and Physics
- Journal Volume
- 28
- Journal Issue
- 1
- Series
- Mater. Chem. Phys.
- Journal Page Range
- 43-50
- ISSN
- 0254-0584
- CODEN
- MCHPD
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Switzerland
- INIS RN
- 22079920
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- BCC LATTICES; ELECTRON MICROSCOPY; EUTECTICS; HYSTERESIS; MICROSTRUCTURE; NICKEL ALLOYS; NIOBIUM ALLOYS; NIOBIUM BASE ALLOYS; OPTICAL MICROSCOPY; PHASE DIAGRAMS; SHAPE MEMORY EFFECT; SOLIDIFICATION; TEMPERATURE DEPENDENCE; TITANIUM ALLOYS; X-RAY DIFFRACTION
- Descriptors DEC
- ALLOYS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DIAGRAMS; DIFFRACTION; INFORMATION; MICROSCOPY; SCATTERING