Coarsening Behavior and Plastic Flow of Ti-6Al-2Sn-4Zr-2Mo-0.1Si with an Ultrafine Microstructure

Coarsening Behavior and Plastic Flow of Ti-6Al-2Sn-4Zr-2Mo-0.1Si with an Ultrafine Microstructure

Coarsening behavior and superplastic-flow response of Ti-6Al-2Sn-4Zr-2Mo-0.1Si with an ultrafine, equiaxed-alpha microstructure were interpreted in the context of classical models. Static coarsening was shown to follow modified Lifshitz–Slyosov–Wagner (LSW) kinetics. The rate of dynamic coarsening w...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2016-09, Vol.47 (9), p.4374-4377
Hauptverfasser: Semiatin, S. L., Sun, F., Crist, E. M., Yu, K. O., Sargent, G. A., Sanders, D. G.
Format: Artikel
Sprache:eng
Schlagworte:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coarsening
Communication
Constitutive equations
Constitutive relationships
Dependence
Diffusion rate
Enhanced diffusion
Heat treating
Materials Science
Metallic Materials
Microstructure
Nanotechnology
Plastic flow
Strain rate
Structural Materials
Superplasticity
Surfaces and Interfaces
Thin Films
Ultrafines
Yield strength
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Zusammenfassung:Coarsening behavior and superplastic-flow response of Ti-6Al-2Sn-4Zr-2Mo-0.1Si with an ultrafine, equiaxed-alpha microstructure were interpreted in the context of classical models. Static coarsening was shown to follow modified Lifshitz–Slyosov–Wagner (LSW) kinetics. The rate of dynamic coarsening was six times more rapid than the corresponding static rate due to enhanced diffusion of solutes in the beta matrix. Last, a generalized constitutive equation was used to interpret the dependence of flow stress on strain/dynamic coarsening, strain rate, and temperature.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-016-3625-1