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Meeting MS&T22: Materials Science & Technology
Symposium Processing-Microstructure-Property Relationships of Titanium and Titanium Alloys
Presentation Title Tailoring Martensitic Transformation in Metastable Beta-Ti Alloys
Author(s) Yunzhi Wang
On-Site Speaker (Planned) Yunzhi Wang
Abstract Scope Martensitic transformation (MT) is a fundamental carrier of both elastic (reversible) and plastic (irreversible) strains and can offer many novel physical, mechanical and functional properties that conventional elasticity and plasticity carriers cannot, including superelasticity, shape memory effect, Invar and Elinvar anomalies, TRIP effect and excellent work-hardening capacity. However, the strain release by a MT is usually highly nonlinear, taking place in an avalanche fashion within a narrow temperature or stress range, which is difficult to control. In this presentation, we give an overview on recent efforts devoted to regulating and utilizing MTs in metastable beta-Ti alloys for controlled strain release under an applied load. In particular, we discuss several means that have been proven effective to turn the sharp, strongly first-order MT into a broadly smeared, apparently continuous transformation, including spatial variation of beta-phase stability induced by concentration modulation, nano shuffle-domain regulated MT, and deformation twin boundary regulated MT.
Proceedings Inclusion? Undecided


Approaches to Improving Yield-strength without Compromising Strain-hardenability in β-Titanium Alloys
Conventional Ti Alloys for Aeroengines And Aircraft Landing Gear Beams—a Data-driven Analysis for Selection of Ti-based Alloys and Future Directions
Design of New Metastable Ti Alloys and Determinations of Their Deformation Mechanisms Active during Tensile Deformation
Development of High Mechanical Strength and Low Elastic Modulus Ti-Nb-Fe-Sn-Zr Alloy for Orthopedic Implants
Dilatometric Study of Phase Transformations in Ti-407
Enhancing Low-cycle Fatigue Life of Commercially-pure Ti By Deformation At Cryogenic Temperature
Hierarchical Twinning Microstructure in the Metastable β Titanium Alloys
Insights from Three-dimensional Characterization of Twins in Titanium
Microstructure-based Equivalent Initial Flaw Size (m-EIFS) Distributions for Airframe Structural Components
Microstructure Evolution and Mechanical Behaviour of Two Phase (α+β) Ti-6Al-4V Alloy : An Effect of Heat Treatment Temperature and Duration
Nanoindentation Studies and Bulk Mechanical Properties of Additively Manufactured Titanium Alloys
Role of Oxygen on Phase Stability, Precipitation, and Deformation in Beta Titanium Alloys
Slip-twinning Interdependency in High-strength Alpha-beta Titanium Alloys
Tailoring Martensitic Transformation in Metastable Beta-Ti Alloys
Titanium Alloy Microstructures Produced by Additive Manufacturing and Deformation
Using Synchrotron X-ray Characterization to Understand Slip Processes in Titanium Alloys

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