Ti-9Mo-6W and Ti-12Mo-xZr ternary alloys

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Table of contents

Table of contents
List of Figures
List of Tables
General introduction
Chapter 1
1.1 Introduction
1.2 The alloying elements and the phases i􀅶 􀅵etasta􀄏le β Ti-alloys
1.2.1 Alloying elements
Stress-induced martensitic transformation
Mechanical twinning
Dislocation slip
References:
Chapter 2
2.1 Introduction
2.2 The d­electron alloy design method
2.3 Design of new metasta􀄏le β Ti-alloys with TRIP and TWIP effects
References:
Chapter 3 Experimental procedure
3.1 Introduction
3.2 Fabrication and cold-rolling process
3.2.1 Ti-12Mo binary model alloy
3.2.2 Ti-9Mo-6W and Ti-12Mo-xZr ternary alloys
3.2.3 Cold-rolling procedure
3.3 Thermo-mechanical treatment and thermal analysis
3.3.1 Thermal treatment procedure
3.3.2 Electrical resistivity measurement
3.4 Microstructural characterization methods
3.4.1 Optical microscope and mechanical polishing
3.4.2 X-ray diffraction
3.4.3 Electron backscattered diffraction (EBSD)
3.4.4 Transmission electron microscopy (TEM)
3.5 Mechanical Testing Tools
3.5.1 Vickers hardness Testing
3.5.2 Tensile Testing
References
Chapter 4
alloy showing combined TRIP/TWIP effects
4.1 Introduction
4.2 Results
4.2.1 Tensile behaviour
4.2.2 Phase transformation characterization
4.2.3 Microstructural evolution
4.2.3.1 OM observations
4.2.3.2 EBSD analysis
4.2.3.3 TEM investigation
4.3 Discussion
4.3.1 Deformation mechanisms
4.3.2 Activation of deformation mechanism during three stage
work-hardening process
4.4 Conclusion
References
Chapter 5 Microstructural characterization and mechanical behavior of Ti-12Mo alloy subjected to low temperature aging treatment
5.1 Introduction
5.2 Experimental results
5.2.1 Investigation of Ti-12Mo mechanical behavior after LTA treatment
5.2.2 Phase transformation during LTA treatments
5.2.3 Deformation products
5.3 Discussion
5.4 Conclusion
References
Chapter 6 Development of ternary Ti-Mo based alloys showing combined TWIP/TRIP effects
6.1 Introduction
6.2 Results and discussions
6.2.1 Development of Ti-9Mo-6W ternary alloy
6.2.1.1 Tensile performances
6.2.1.2 Microstructural evolution
6.2.2 Ternary Ti-Mo-Zr alloys
6.2.2.1 Mechanical behavior
6.2.2.2 Phase constitutions and microstructure feature
6.3 Conclusion
References
Conclusions
Abstract