Influence of Fe addition in CP titanium on phase transformation, microstructure and mechanical properties during high pressure torsion
Source abstract
Abstract
In the present study, commercially pure (CP) titanium with four different Fe additions varying from 0.04 to 1.0 wt% were specifically deformed by high pressure torsion (HPT) process at room temperature. Significant influence of Fe content on the phase transformation, microstructure evolution, and mechanical properties were observed based on systematic evaluations. This study provided the first experimental evidence to support the previously reported theoretical calculation which predicted that the onset pressure of α→ω phase transformation in pure titanium decreased with increasing Fe addition. It has been found that ω phase only formed in CP titanium when it had Fe content higher than 0.25 wt% if the HPT process was conducted under 4.0 GPa. By comparison, ω phase was observed for all four Fe additions if the CP titanium was deformed under pressure of ≥6.0 GPa, with its volume fraction increasing significantly before 1 HPT rotation and then saturating after 10 rotations. Besides, the results also indicate that the Fe addition is very effective in enhancing the grain refinement and improving the mechanical properties of CP titanium by HPT deformation.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Microstructure and mechanical properties · Titanium Alloys Microstructure and Properties · Metallurgy and Material Forming
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (47)
Show source-provided references
1. Ti based biomaterials, the ultimate choice for orthopaedic implants – a review10.1016/j.pmatsci.2008.06.004 ↗
2. Lutjering · 2007 · 176
3. Crystal structures of titanium, zirconium, and hafnium at high pressures10.1126/science.140.3562.72 ↗
4. Omega phase in materials10.1016/0079-6425(82)90002-0 ↗
5. Quantitative analysis of grain refinement in titanium during equal channel angular pressing10.1016/j.scriptamat.2011.01.030 ↗
6. Structure and mechanical properties of commercial purity titanium processed by ECAP at room temperature10.1016/j.msea.2011.06.054 ↗
7. Microstructure and mechanical properties of commercial purity titanium severely deformed by ARB process10.1007/s10853-006-0909-7 ↗
8. Change in mechanical properties and microstructure of ARB processed Ti during annealing10.2320/matertrans.ME200710 ↗
9. Structural and mechanical properties of nanocrystalline titanium processed by severe plastic deformation10.1016/S1359-6462(97)00210-8 ↗
10. Advanced mechanical properties of pure titanium with ultrafine grained structure10.1016/S1359-6462(01)01089-2 ↗
11. The developing of nanostructured SPD Ti for structural use10.1016/S1359-6462(01)00737-0 ↗
12. Grain size and reversible beta-to-omega phase transformation in a Ti alloy10.1016/j.scriptamat.2010.05.045 ↗
13. Formation of nanocrystalline β structure in metastable beta Ti alloy during high pressure torsion: the role played by stress induced martensitic transformation10.1016/j.actamat.2015.06.042 ↗
14. Microstructure and mechanical properties of titanium (Grade 4) processed by high pressure torsion10.1016/j.msea.2007.08.084 ↗
15. Microhardness evolution and mechanical characteristics of commercial purity titanium processed by high pressure torsion10.1016/j.msea.2014.07.030 ↗
16. Characterization of microstructure with different Fe addition processed by severe plastic deformation and subsequent annealing10.1088/1757-899X/194/1/012020 ↗
17. Characteristics of the allotropic phase transformation in titanium processed by high-pressure torsion using different rotation speeds10.1016/j.msea.2016.05.001 ↗
18. Microstructural heterogeneity in hexagonal close-packed pure Ti processed by high-pressure torsion10.1007/s10853-012-6343-0 ↗
19. Evidence of α→ω phase transition in titanium after high pressure torsion10.3139/146.101606 ↗
20. Electrical resistivity mapping of titanium and zirconium discs processed by high-pressure torsion for homogeneity and phase transformation evaluation10.1007/s10853-017-0916-x ↗
21. Microstructural evolution in ultrafine-grained titanium processed by high-pressure torsion under different pressures10.1007/s10853-014-8248-6 ↗
22. Processing pure Ti by high-pressure torsion in wide ranges of pressure and strain10.1007/s11661-009-9890-5 ↗
23. High pressure torsion of titanium at cryogenic and room temperatures: grain size effect on allotropic phase transformation10.1016/j.actamat.2014.01.037 ↗
24. Elastic properties of single-crystalline ω phase in titanium10.1016/j.actamat.2013.08.036 ↗
25. Bulk submicrocrystalline ω-Ti produced by high-pressure torsion straining10.1016/j.scriptamat.2008.05.015 ↗
26. Strain gradient hardening and pressure induced phase transformation of metals by HPT10.4028/www.scientific.net/MSF.584-586.493 ↗
27. Influence of strain amount on stabilization of ω-phase in pure Ti by severe plastic deformation under high-pressure torsion10.1088/1742-6596/240/1/012113 ↗
28. Evolution of deformation texture of high-pressure ω-phases in pure Ti and Zr during high-pressure torsion straining10.1088/1757-899X/82/1/012020 ↗
29. X-ray analysis of α and ω-phases of Ti, subjected to high-pressure torsion10.4028/www.scientific.net/MSF.667-669.187 ↗
30. High-pressure torsion of Ti: synchrotron characterization of phase volume fraction and domain sizes10.1088/1757-899X/63/1/012147 ↗
31. Orientation relationship between α-phase and high-pressure ω-phase of pure group IV transition metals10.1016/j.scriptamat.2014.10.029 ↗
32. Phase transformation kinetics of ω-phase in pure Ti formed by high-pressure torsion10.1007/s10853-015-9574-z ↗
33. Phase transformations in Ti-Fe alloys induced by high-pressure torsion10.1002/adem.201500143 ↗
34. Transformations of α’ martensite in Ti-Fe alloys under high pressure torsion10.1016/j.scriptamat.2017.04.010 ↗
35. The α→ω and β→ω phase transformation in Ti-Fe alloys under high-pressure torsion10.1016/j.actamat.2017.10.051 ↗
36. Using high-pressure torsion for metal processing: fundamentals and applications10.1016/j.pmatsci.2008.03.002 ↗
37. Mechanical properties of fully martensite microstructure in Ti-6Al-4V alloy transformed from refined beta grains obtained by rapid heat treatment (RHT)10.1016/j.scriptamat.2017.05.038 ↗
38. Evidence for a transition in deformation mechanism in nanocrystalline pure titanium processed by high-pressure torsion10.1080/14786435.2016.1177230 ↗
39. Effects of equal channel angular pressing temperature on deformation structures of pure Ti10.1016/S0921-5093(02)00318-0 ↗
40. Influence of phase volume fraction on the grain refining of a Ti-6Al-4V alloy by high-pressure torsion10.1016/j.jmrt.2014.10.006 ↗
41. Grain refining of a Ti-6Al-4V alloy by high-pressure torsion and low temperature superplasticity10.22226/2410-3535-2015-3-281-286 ↗
42. Impurities block the α to ω martensitic transformation in titanium10.1038/nmat1292 ↗
43. Electronic basis for omega phase stability in group IV transition metals and alloys10.1016/0001-6160(79)90049-X ↗
44. Tsuji · 2011 · 40
45. Effect of hydrostatic pressure on the microstructure and mechanical properties during and after high pressure torsion10.4028/www.scientific.net/MSF.667-669.657 ↗
46. The role of hydrostatic pressure in severe plastic deformation10.1002/adem.200310090 ↗
47. Evolution of microstructural parameters in large strain deformation: description by Zehetbauer’s model