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In situ synchrotron X-ray diffraction analysis of deformation behavior of a Nb/NiTi composite for biomedical applications
- Source :
- Rare Metals. 40:600-606
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- The deformation behavior involved in Nb/NiTi composite for biomedical applications within a large macroscopic strain range was investigated by tensile loading–unloading test and in situ synchrotron X-ray diffraction (SXRD). Experimental results show that during loading, the Nb/NiTi composite experiences the elastic elongation of B2-NiTi austenitic, B19′-NiTi martensitic and β-Nb phases, B2 → B19′ stress-induced martensitic (SIM) transformation and tensile plastic deformation of β-Nb phase. During unloading, the deformation behavior involved in Nb/NiTi composite includes the elastic recovery of B2-NiTi austenitic, B19′-NiTi martensitic and β-Nb phases, reverse phase transformation B19′ → B2 and compressive deformation of β-Nb phase. The martensitic transformation in this composite is almost reversible and occurs in a localized manner. These results might contribute to a comprehensive understanding of the deformation mechanism involved in Nb/NiTi composite and shed some light on design and development of novel composites with a combination of good biocompatibility and excellent superelasticity for biomedical applications.
- Subjects :
- Austenite
Materials science
020502 materials
Composite number
Metals and Alloys
02 engineering and technology
Condensed Matter Physics
0205 materials engineering
Deformation mechanism
Nickel titanium
Diffusionless transformation
Pseudoelasticity
Ultimate tensile strength
Materials Chemistry
Physical and Theoretical Chemistry
Deformation (engineering)
Composite material
Subjects
Details
- ISSN :
- 18677185 and 10010521
- Volume :
- 40
- Database :
- OpenAIRE
- Journal :
- Rare Metals
- Accession number :
- edsair.doi...........bf82ee7c1048a0dfac5d597610d3f371