scholarly journals Formation of Alpha Case Mechanism on Titanium Investment Cast Parts

10.5772/35496 ◽  
2012 ◽  
Author(s):  
Si-Young Sung ◽  
Beom-Suck Han ◽  
Young-Jig Kim
Keyword(s):  
Investment Cast ◽  
Alpha Case ◽  
Cast Parts

Control of Alpha Case on Investment Cast Ti 6Al-4V Using An Industrial Shelling System

2016 ◽  
pp. 377-380
Author(s):  
G. Morin ◽  
G. Marin ◽  
M.C. Parr ◽  
L. Forget ◽  
J Carignan
Keyword(s):  
Investment Cast ◽  
Alpha Case

Sand, die and investment cast parts via the SLS selective laser sintering process

1997 ◽  
Author(s):  
Simon van de Crommert ◽  
Sandra Seitz ◽  
Klaus K. Esser ◽  
Kevin McAlea
Keyword(s):  
Selective Laser Sintering ◽  
Laser Sintering ◽  
Sintering Process ◽  
Investment Cast ◽  
Cast Parts

Metallurgical Failure Investigation of Overheated and Fractured Investment Cast Nickel-base Bolts Made of Inconel 939

2013 ◽  
Vol 50 (7) ◽  
pp. 501-512
Author(s):  
S. Leggemann ◽  
E. Cagliyan ◽  
S. Riesenbeck ◽  
A. Neidel
Keyword(s):  
Failure Investigation ◽  
Investment Cast ◽  
Nickel Base

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.

Correlation Between Microstructure and Mechanical Properties of Diffusion Brazed MAR-M 247

1993 ◽  
Author(s):  
W. Miglietti
Keyword(s):  
Filler Metal ◽  
Turbine Blades ◽  
High Strength ◽  
Strength Properties ◽  
Joint Microstructure ◽  
Investment Cast ◽  
Diffusion Brazing ◽  
Brazed Joints ◽  
Joining Process ◽  
Turbine Blading

Diffusion brazing is a joining process utilized in the manufacture and repair of turbine blades and vanes. MAR-M247 is an investment cast Ni-based superalloy used for turbine blading and has good strength properties at high temperatures. The objectives of this work was to develop a diffusion brazing procedure to achieve high strength joints. A commercially available diffusion brazing filler metal of composition Ni-15Cr-3,5B of 100 μm thickness was used. With the desire to eliminate brittle centre-line phases, the effects of the processing variables (only temperature and time) on the joint microstructure was studied. Once the metallurgy of the joint was understood, mechanical property assessments were undertaken i.e. tensile and creep rupture tests, and the latter being the severest test to evaluate joint strength. The results demonstrated that the diffusion brazed joints had nearly equivalent mechanical strength to that of the parent metal. This showed that the resultant diffusion brazing parameters enabled effective and reliable joining of MAR-M247.

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