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Meeting MS&T22: Materials Science & Technology
Symposium Processing-Microstructure-Property Relationships of Titanium and Titanium Alloys
Presentation Title Design of New Metastable Ti Alloys and Determinations of Their Deformation Mechanisms Active during Tensile Deformation
Author(s) Brian A. Welk, Nevin Taylor, Zachary T. Kloenne, G. Babu Viswanathan, Hamish L. Fraser
On-Site Speaker (Planned) Hamish L. Fraser
Abstract Scope Metastable Ti alloys are those for which their microstructures, when heat-treated above the beta transus and quenched to room temperature, consist entirely of the beta phase rather than the formation of martensite commonly observed in quenched (alpha+beta) alloys (e.g., Ti64 (Ti-6Al-4V). Interestingly, the retained beta phase in the metastable beta alloys consists of a number of structural and compositional instabilities, most common being the omega and O’ phases. These latter phases influence the nucleation of the alpha phase such that extremely refined distributions of this latter phase may be obtained by tailored heat-treatments. In this paper, we report on the design of some new metastable beta alloys containing a variety of alpha distributions, differing in scale. The tensile properties of these new alloys will be listed, and the results of studies of the deformation mechanisms active in these refined microstructures will be reported.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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