Influence of Fine-Scale Alpha Precipitation on the Mechanical Properties of the Beta Titanium Alloy Beta-21S

Influence of Fine-Scale Alpha Precipitation on the Mechanical Properties of the Beta Titanium Alloy Beta-21S

Mechanical response of β -21S alloy microstructures with fine-scale and coarser alpha phase was compared via microstructural and mechanical characterization. Results indicate that work-hardening behavior of β -21S is a strong function of alpha size scale. Specimens with fine-scale alpha exhibited su...

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Veröffentlicht in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2015-07, Vol.46 (7), p.2803-2808
Hauptverfasser: Mantri, S. A., Choudhuri, D., Behera, A., Cotton, J. D., Kumar, N., Banerjee, R.
Format: Artikel
Sprache:eng
Schlagworte:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Communication
Materials Science
Metallic Materials
Microstructure
Nanotechnology
Structural Materials
Surfaces and Interfaces
Temperature
Thin Films
Titanium alloys
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Zusammenfassung:Mechanical response of β -21S alloy microstructures with fine-scale and coarser alpha phase was compared via microstructural and mechanical characterization. Results indicate that work-hardening behavior of β -21S is a strong function of alpha size scale. Specimens with fine-scale alpha exhibited substantially higher strengths (~1200 MPa) compared to those containing coarser alpha precipitates (~950 MPa). Furthermore, reasonable tensile elongation values, ~8 pct, to failure could be achieved for these high strengths, provided grain boundary fracture can be limited.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-015-2944-y