Back to Search
Start Over
Phase transformations in body-centered cubic NbxHfZrTi high-entropy alloys.
- Source :
-
Materials Characterization . Aug2018, Vol. 142, p443-448. 6p. - Publication Year :
- 2018
-
Abstract
- The stability of body-centered cubic (β) phases and phase transformations of Nb x HfZrTi ( x = 1, 0.6, 0.4 and 0.2) high-entropy alloys (HEAs) were investigated. Three types of transformations were observed: the β → ω transformation during cooling in Nb0.2 HEA, the deformation-induced β → α″ and β → α′ transformations in Nb0.4 and Nb0.2 HEAs, respectively. This implies that the phonon anomalies, T 1 1/2(110) and L 2/3(111), as the origins of phase transformations in simple Ti, Zr and Hf alloys, also exist in composition-complex TiZrHf-based HEAs. However, the very small fraction of deformation-induced α′/α″ martensite in fractured Nb0.4 and Nb0.2 suggests a sluggish effect of transformation as compared with simple β-Ti alloys. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHASE transitions
*ALLOYS
*DEFORMATIONS (Mechanics)
*PHONONS
*ENTROPY
Subjects
Details
- Language :
- English
- ISSN :
- 10445803
- Volume :
- 142
- Database :
- Academic Search Index
- Journal :
- Materials Characterization
- Publication Type :
- Academic Journal
- Accession number :
- 130721405
- Full Text :
- https://doi.org/10.1016/j.matchar.2018.06.012