Abstract
Near β titanium alloys present better formability at moderate temperatures compared to α-β alloys. On the other hand, the strength of the forged workpiece is markedly increased after heat treatments by α-phase precipitation hardening. These properties make these high strength Ti-alloys attractive for aircraft and aerospace components. In this work, the formability of Ti-10V-2Fe-3Al is studied. Hot compression tests with cylindrical specimens are performed by means of a Gleeble® 1500 machine at temperatures below β-transus (788 °C) and at constant strain rates of 0.01, 0.1 and 1 s-1. The flow curves show a continuous softening at 0.1 and 1 s-1 after an initial stress peak, and steady flow at low strain rate (0.01 s-1). The evolution of the microstructure for specimens deformed to different strain levels is examined. A quantitative analysis of SEM images is carried out to determine the distribution, shape and content of α phase before and after deformation. The local strain within the compression specimens is determined by a finite element method and correlated to the microstructure.
Originalsprache | englisch |
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Seiten (von - bis) | 473-477 |
Seitenumfang | 5 |
Fachzeitschrift | Journal of Materials Processing Technology |
Jahrgang | 177 |
Ausgabenummer | 1-3 |
DOIs | |
Publikationsstatus | Veröffentlicht - 3 Juli 2006 |
ASJC Scopus subject areas
- Keramische und Verbundwerkstoffe
- Modellierung und Simulation
- Angewandte Informatik
- Metalle und Legierungen
- Wirtschaftsingenieurwesen und Fertigungstechnik
Fields of Expertise
- Advanced Materials Science