High-temperature low-cycle fatigue of a gamma titanium aluminide alloy Ti-46Al-2Nb-2Cr

1996 ◽  
Vol 27 (8) ◽  
pp. 2239-2251 ◽  
Author(s):  
G. Malakondaiah ◽  
T. Nicholas
Keyword(s):  
High Temperature ◽  
Titanium Aluminide ◽  
Low Cycle Fatigue ◽  
Cycle Fatigue ◽  
Gamma Titanium Aluminide ◽  
Gamma Titanium ◽  
Titanium Aluminide Alloy

Localized Oxidation Near Cracks and Lamellar Boundaries in a Gamma Titanium Aluminide Alloy

1994 ◽  
Vol 364 ◽  
Author(s):  
J. Kameda ◽  
C. R. Gold ◽  
E. S. Lee ◽  
T. E. Bloomer ◽  
M. Yamaguchi
Keyword(s):  
High Temperature ◽  
Titanium Aluminide ◽  
Lamellar Structure ◽  
Oxidation Behavior ◽  
Stress Axis ◽  
Surface Cracks ◽  
Gamma Titanium Aluminide ◽  
Titanium Aluminide Alloy ◽  
Scanning Auger Microprobe ◽  
Local Oxidation

AbstractSmall punch (SP) tests on single grained titanium aluminide (Ti-48 at.%Al) specimens with 12° and 80° lamellar orientations with respect to the tensile stress axis were conducted at 1123 K in air. Brittle cracks readily extended through the thickness in the 80° lamellar structure. In a SP specimen with the 12° lamellar structure load-interrupted at the strain of 0.43%, surface cracks with the depth of 15–25 μm were formed along lamellar boundaries. Local oxidation behavior on partly sputtered surfaces in the load-interrupted 12° lamellar specimen was examined using scanning Auger microprobe (SAM). Oxygen enriched regions were observed near cracks and some lamellar layers. The mechanisms of high temperature oxygen-induced cracking are discussed in terms of the local oxidation near cracks and lamellar boundaries.

Fatigue Sensitivity to Small Defects of a Gamma–Titanium–Aluminide Alloy

2012 ◽  
pp. 278-294
Author(s):  
Mauro Filippini ◽  
Stefano Beretta ◽  
Luca Patriarca ◽  
Giuseppe Pasquero ◽  
Silvia Sabbadini
Keyword(s):  
Titanium Aluminide ◽  
Gamma Titanium Aluminide ◽  
Gamma Titanium ◽  
Titanium Aluminide Alloy ◽  
Fatigue Sensitivity

scholarly journals Defect tolerance of a gamma titanium aluminide alloy

2011 ◽  
Vol 10 ◽  
pp. 3677-3682 ◽  
Author(s):  
M. Filippini ◽  
S. Beretta ◽  
L. Patriarca ◽  
G. Pasquero ◽  
S. Sabbadini
Keyword(s):  
Titanium Aluminide ◽  
Defect Tolerance ◽  
Gamma Titanium Aluminide ◽  
Gamma Titanium ◽  
Titanium Aluminide Alloy
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