Atom probe analysis of oxygen in ternary TiAl alloys

Journal Article · Mon Jul 15 04:00:00 EDT 1996 · Scripta Materialia

DOI:https://doi.org/10.1016/1359-6462(96)00125-X· OSTI ID:276172

Nerac-Partaix, A; Menand, A ^[1]

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1. Universite de Rouen, Mont Saint Aignan (France). Lab. de Microscopie Ionique et Electronique

{gamma}-titanium aluminide alloys are now considered as excellent candidates for aerospace applications. They combine a high melting temperature, low density, high modulus and a good oxidation and creep resistance. However, they suffer from a rather low ductility and toughness at room temperature which limit their applications. Recent researches have focused on understanding and controlling this lack of ductility at room temperature while maintaining the attractive elevated temperature characteristics. The ductility of {gamma} alloys is strongly dependent on the alloy composition and microstructure. In this paper, the authors will focus on the behavior of oxygen in the presence of another metallic element (such as Cr, Nb or Mn) in {gamma}-single phase ternary alloys. They will discuss the results and their interpretation compared to recently published observations.

• OSTI ID: 276172
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 2 Vol. 35; ISSN 1359-6462; ISSN XZ503X
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
AEROSPACE INDUSTRY
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
DUCTILITY
HEAT TREATMENTS
INTERMETALLIC COMPOUNDS
INTERSTITIALS
MANGANESE ALLOYS
MATERIALS
MELTING
NIOBIUM ALLOYS
SAMPLE PREPARATION
SOLUBILITY
TERNARY ALLOY SYSTEMS
TITANIUM ALLOYS