Role of Nb3Si in high temperature deformation of a cast Nb - 10 a/o Si in-situ composite

1992 ◽  
Vol 26 (5) ◽  
pp. 749-754 ◽  
Author(s):  
B Cockeram ◽  
M Saqib ◽  
R Srinivasan ◽  
I Weiss
Keyword(s):  
High Temperature ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
In Situ Composite

Flow softening during high temperature deformation of Nb-10 a/o Si in-situ composite

1992 ◽  
Vol 27 (6) ◽  
pp. 711-716 ◽  
Author(s):  
M Thirukkonda ◽  
B Cockeram ◽  
M Saqib ◽  
L.E Matson ◽  
R Srinivasan ◽  
...  
Keyword(s):  
High Temperature ◽  
Flow Softening ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
In Situ Composite

The role of interphase boundary phenomena on mechanical behavior during high-temperature deformation

1991 ◽  
Vol 49 ◽  
pp. 594-595
Author(s):  
B. Hidalgo-Prada
Keyword(s):  
High Temperature ◽  
Mechanical Behavior ◽  
Interphase Boundary ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
Metallographic Analysis ◽  
Two Phase ◽  
Transmission Electron ◽  
Phase Size

The influence of interphase boundary on the mechanical behavior of a two-phase (α/β) Ni-Modified Ti-6A1-4V alloy during superplastic deformation (SPD), has been investigated in the range of temperature and strain rate where maximum ductility is - attained.Uniaxial tests for constant and differential strain rates were performed over the - range of 5.0 x 10-5 s-1 to 5.0 x 10-3 s-1 and at temperature from 1023 to 1123 K. To optimize the initial microstructure, tensile specimens were static annealed in argon for 1 hour at 815 °C ( SA-1-815).Upon completion of the tests, specimens were quenched in pre-chilled argon to pre—serve the high temperature microstructure for metallographic analysis. The gage portion of the specimen was polished and etched in a solution of 2 ml HF, 3 ml HNO3 and 95 ml H2O. Subsequently, they were subjected to scanning and transmission electron - microscopy (SEM and TEM) examination. A Quantimet Image Analizer was used for determining the phase size, its distribution and volume fractions.

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