| Issue |
MATEC Web Conf.
Volume 321, 2020
The 14th World Conference on Titanium (Ti 2019)
|
|
|---|---|---|
| Article Number | 04016 | |
| Number of page(s) | 9 | |
| Section | Aerospace Applications | |
| DOI | https://doi.org/10.1051/matecconf/202032104016 | |
| Published online | 12 October 2020 | |
Tensile properties of α-titanium alloys at elevated temperatures
1 Leibniz Institute for Materials Engineering IWT-Bremen, University of Bremen
2 FormTech GmbH
* Corresponding Author: nawaya@iwt-bremen.de
Hot-deep drawing is an innovative processing technology to produce complex shaped sheet metal components with constant wall thickness from high-strength lightweight materials. For some aerospace and automotive applications oxidation resistance at medium to high temperatures is an important aspect. In terms of this titanium α-alloys are often used due to their balanced relation of strength and oxidation resistance. In the presented study the stress-strain characteristics of several α-titanium alloys were determined at ambient and elevated temperatures by means of hot tensile tests. Besides the commercially pure Titanium alloy ASTM-Grade 4, two novel α-titanium alloys were investigated. Regarding the hot forming properties a comparison with α-β Ti-6Al-4V alloy was conducted. The hot tensile tests were carried out by means of a particular forming dilatometer type “Gleeble 3500” at 400, 500, 600, 650, 700 and 800 °C. The test showed favorable peak plasticity for all α-alloys at the temperature range between 600 and 650 °C in contrast to lower or higher temperatures. All samples were metallographically characterized.
Key words: titanium α-alloys, hot tensile properties, elevated temperatures, Gleeble 3500.
© The Authors, published by EDP Sciences, 2020
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