LAPSE:2021.0128
Published Article
LAPSE:2021.0128
Influence of β-Stabilizers on the α-Ti→ω-Ti Transformation in Ti-Based Alloys
Askar Kilmametov, Alena Gornakova, Mikhail Karpov, Natalia Afonikova, Anna Korneva, Pawel Zięba, Brigitte Baretzky, Boris Straumal
March 14, 2021
The development of next generation Ti-based alloys demand completely new processes and approaches. In particular, the Ti-alloys of next generation will contain not only α-Ti and β-Ti phases, but also small amounts of ω-phase and intermetallic compounds. The β→ω phase transformation induced by high-pressure torsion (HPT) has been studied in detail recently. In this work, we investigated the HPT-induced α→ω phase transformation. For this purpose, we added various β-stabilizers into α-Ti matrix of studied Ti-alloys. Ti-alloys with 4% Fe, 2% Cr, 3% Ni, and 4% Co (wt. %) have been annealed at the temperatures below their point of eutectoid decomposition, from β-Ti to α-Ti, and respective intermetallics (TiFe, Ti2Co, Ti2Ni, TiCr2). Volume fraction of HPT-driven ω-phase (from ≤5 up to ~80%) depended on the amount of alloying element dissolved in the α-matrix. Evaluation of lattice parameters revealed accelerated mass transfer during HPT at room temperature corresponding to bulk diffusion in α-Ti at ~600 °С.
Keywords
high-pressure torsion, mass transfer, Ti-alloys, α-Ti→ω-Ti transformation, β-stabilizers
Subject
Suggested Citation
Kilmametov A, Gornakova A, Karpov M, Afonikova N, Korneva A, Zięba P, Baretzky B, Straumal B. Influence of β-Stabilizers on the α-Ti→ω-Ti Transformation in Ti-Based Alloys. (2021). LAPSE:2021.0128
Author Affiliations
Kilmametov A: Institute for Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; Scientific Center in Chernogolovka, Russian Academy of Sciences, Lesnaya str. 9, 142432 Chernogolovka, Russia
Gornakova A: Institute of Solid State Physics, Russian Academy of Sciences, Ac. Ossipyan str. 2, 142432 Chernogolovka, Russia
Karpov M: Institute of Solid State Physics, Russian Academy of Sciences, Ac. Ossipyan str. 2, 142432 Chernogolovka, Russia
Afonikova N: Institute of Solid State Physics, Russian Academy of Sciences, Ac. Ossipyan str. 2, 142432 Chernogolovka, Russia
Korneva A: Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta St. 25, 30-059 Cracow, Poland
Zięba P: Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta St. 25, 30-059 Cracow, Poland [ORCID]
Baretzky B: Institute for Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
Straumal B: Institute for Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany; Scientific Center in Chernogolovka, Russian Academy of Sciences, Lesnaya str. 9, 142432 Chernogolovka, Russia; I
Journal Name
Processes
Volume
8
Issue
9
Article Number
E1135
Year
2020
Publication Date
2020-09-11
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr8091135, Publication Type: Journal Article
Record Map
Published Article

LAPSE:2021.0128
This Record
External Link

doi:10.3390/pr8091135
Publisher Version
Download
Files
[Download 1v1.pdf] (1.5 MB)
Mar 14, 2021
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
413
Version History
[v1] (Original Submission)
Mar 14, 2021
 
Verified by curator on
Mar 14, 2021
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2021.0128
 
Original Submitter
Calvin Tsay
Links to Related Works
Directly Related to This Work
Publisher Version