Thermal Processing of a Titanium Alloy for Aeronautical Applications

Abstract:

The titanium alloys are used in aeronautical applications (up to 75% of titanium alloys), reinforcements, biomedical applications, army industry, because of a high traction resistance, low weight, excellent corrosion resistance and capacity to resist at extreme temperatures. However, some titanium applications are restricted by the small hardness, high friction coefficient and low usage resistance. The paper shows the experimental researches made on Ti-6Al-4V alloy, subjected to quenching and tempering heat treatments. The hardening heat treatment of titanium alloys with α+β structure consists in stabilization phenomenon of β solid solution dissolved in α’ and α’’ metastable phase. After quenching and tempering heat treatments, are obtained good mechanical properties in biphasic alloys, maintaining the plasticity characteristics in reasonable limits. The efficiency evaluation of heat treatments was realized through micro-hardness measurement and structure analyses on electronic microscope.

• Periodical: Materials Science Forum (Volume 907)
• Pages: 214-219
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.907.214
• Online since: September 2017
• Authors: Dragoș Cristian Achiței*, Petrică Vizureanu, Mirabela Georgiana Minciună, Mohd Mustafa Al Bakri Abdullah, Andrei Victor Sandu
• Keywords: Biphasic Structure, Properties, Titanium, Treatments

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