Process and properties of hydride formed on gamma titanium aluminide during cathodic charging

2005 ◽  
Vol 400 (1-2) ◽  
pp. 125-130 ◽  
Author(s):  
E.C. Herrera-Barros ◽  
P.A. Sundaram ◽  
C. Fountzoulas
Keyword(s):  
Titanium Aluminide ◽  
Gamma Titanium Aluminide ◽  
Gamma Titanium ◽  
Cathodic Charging

Microstructure of Ti-45Al-5Nb after Cathodic Charging

2010 ◽  
Vol 95 ◽  
pp. 87-90
Author(s):  
E. Barel ◽  
Guy Ben-Hamu ◽  
D. Eliezer
Keyword(s):  
Current Density ◽  
Titanium Aluminide ◽  
Electronic Microscopy ◽  
Gamma Titanium Aluminide ◽  
Gamma Titanium ◽  
Charging Mode ◽  
A Current ◽  
Cathodic Charging

Gamma titanium aluminide material, cast Ti–45Al–5Nb (at.%), was electrochemically precharged with hydrogen in the cathodic charging mode at a current density of 50 mA/cm2 for times ranging from 6 to 48 h. XRD and microstructure investigations by means of electronic microscopy were used for analyzed the influence of hydrogen on the microstructure.

Limitations of an Indentation Model for Grinding Gamma Titanium Aluminide

2002 ◽  
Author(s):  
H. Ali Razavi ◽  
Steven Danyluk ◽  
Thomas R. Kurfess
Keyword(s):  
Force Control ◽  
Titanium Aluminide ◽  
Normal Force ◽  
Removal Rate ◽  
Cubic Boron Nitride ◽  
Normal Component ◽  
Grinding Force ◽  
Cutting Depth ◽  
Gamma Titanium Aluminide ◽  
Gamma Titanium

This paper explores the limitations of a previously reported indentation model that correlated the depth of plastic deformation and the normal component of the grinding force. The indentation model for grinding is studied using force control grinding of gamma titanium aluminide (TiAl-γ). Reciprocating surface grinding is carried out for a range of normal force 15–90 N, a cutting depth of 20–40 μm and removal rate of 1–9 mm3/sec using diamond, cubic boron nitride (CBN) and aluminum oxide (Al2O3) abrasives. The experimental data show that the indentation model for grinding is a valid approximation when the normal component of grinding force exceeds some value that is abrasive dependent.

The Dependence of Tensile Ductility on Investment Casting Parameters in Gamma Titanium Aluminides

1998 ◽  
Vol 552 ◽  
Author(s):  
R. Raban ◽  
L. L. ◽  
T. M.
Keyword(s):  
Titanium Aluminide ◽  
Titanium Aluminides ◽  
Tensile Ductility ◽  
Gamma Titanium Aluminide ◽  
Cooling Rates ◽  
Gamma Titanium ◽  
Investment Cast ◽  
Thermal Data ◽  
Titanium Aluminide Alloys ◽  
Simulation Package

ABSTRACTPlates of three gamma titanium aluminide alloys have been investment cast with a wide variety of casting conditions designed to influence cooling rates. These alloys include Ti-48Al-2Cr-2Nb, Ti- 47Al-2Cr-2Nb+0.5at%B and Ti-45Al-2Cr-2Nb+0.9at%B. Cooling rates have been estimated with the use of thermal data from casting experiments, along with the UES ProCAST simulation package. Variations in cooling rate significantly influenced the microstructure and tensile properties of all three alloys.

Hybrid Additive Manufacturing of Gamma Titanium Aluminide Space Hardware

2018 ◽  
Author(s):  
A. Seidel ◽  
T. Maiwald ◽  
T. Finaske ◽  
S. Polenz ◽  
S. Saha ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Titanium Aluminide ◽  
Gamma Titanium Aluminide ◽  
Gamma Titanium

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
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