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Meeting MS&T22: Materials Science & Technology
Symposium Processing-Microstructure-Property Relationships of Titanium and Titanium Alloys
Presentation Title Insights from Three-dimensional Characterization of Twins in Titanium
Author(s) Rodney J. McCabe, Hi T Vo, Patrick R Pinney, Matthew M Schneider, M. Arul Kumar, Carlos N Tome, Laurent Capolungo
On-Site Speaker (Planned) Rodney J. McCabe
Abstract Scope Deformation twinning has a significant impact on the evolution of microstructure and mechanical response in hexagonal close packed (hcp) metals. Three dimensional (3D) microstructural neighborhoods influence the local stresses that drive twinning phenomena and have significant effects on evolving twin microstructures. Here we show 3D microstructure effects on twinning in high-purity titanium revealed through two experiments: differential aperture X-ray microscopy and plasma (P)FIB based 3D-EBSD. The differential aperture x-ray microscopy experiment highlights the importance of stress concentrations not only for twin nucleation, but also to the growth process of twins, particularly for low Schmid factor twins. The 3D-EBSD experiments feature the importance of twin-twin interactions in 3D including variant interactions within grains, twin crossings at grain boundaries, and co-nucleation of twins.
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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