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Journal of Materials Engineering and Performance
Erschienen in: Journal of Materials Engineering and Performance 9/2015

01.09.2015

Effects of Aging Treatments on the Mechanical Behavior of Ti-15V-3Cr-3Sn-3Al Alloy

verfasst von: Y.-K. Chou, L. W. Tsay, C. Chen

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 9/2015

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Abstract

The effect of aging treatments on the mechanical properties and microstructures of Ti-15V-3Cr-3Sn-3Al (Ti-15-3) alloy was evaluated using tensile, notched tensile, and J-integral tests. The properties for the one-step aged specimens (371 to 648 °C for 8 h) were compared with those for the two-step aged specimens (one-step aged + 426 °C/24 h). An increase in aging temperature of one-step aging resulted in increased notched tensile strength and fracture toughness of the Ti-15-3 alloy. The second-step aging at 426 °C for 24 h caused various degrees of hardening in the group of double aged specimens. Comparing to the one-step aged specimens, increased notch brittleness and decreased fracture toughness were observed in the two-step aged specimens. For the specimens subjected to aging at 648 °C, the formation of thick α layer at β grain boundaries resulted in lower tensile properties and fracture toughness. The fracture modes of the notch-brittle specimens were strongly affected by the distribution, size, and morphology of the α precipitates.
Vorheriger Artikel Microstructure, Cyclic Deformation and Corrosion Behavior of Laser Welded NiTi Shape Memory Wires
Nächster Artikel Insulation Performance of Heat-Resistant Material for High-Speed Aircraft Under Thermal Environments

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Metadaten
Titel
Effects of Aging Treatments on the Mechanical Behavior of Ti-15V-3Cr-3Sn-3Al Alloy
verfasst von
Y.-K. Chou
L. W. Tsay
C. Chen
Publikationsdatum
01.09.2015
Verlag
Springer US
Erschienen in
Journal of Materials Engineering and Performance / Ausgabe 9/2015
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-015-1622-y

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