Microstructures and hardness properties of laser clad Ni base two-phase intermetallic alloy coating

2017 ◽  
Vol 32 (24) ◽  
pp. 4531-4540 ◽  
Author(s):  
Takeshi Okuno ◽  
Yasuyuki Kaneno ◽  
Takuto Yamaguchi ◽  
Satoshi Semboshi ◽  
Hideki Hagino ◽  
...  
Keyword(s):  
Alloy Coating ◽  
Intermetallic Alloy ◽  
Two Phase ◽  
Phase Intermetallic ◽  
Image Position

Abstract

Superplasticity and hot rolling of two-phase intermetallic alloy based on TiAl

1996 ◽  
Vol 34 (6) ◽  
pp. 985-991 ◽  
Author(s):  
R. Imayev ◽  
M. Shagiev ◽  
G. Salishchev ◽  
V. Imayev ◽  
V. Valitov
Keyword(s):  
Hot Rolling ◽  
Intermetallic Alloy ◽  
Two Phase ◽  
Phase Intermetallic

Two-phase intermetallic alloy Ni3(Al, Si):

2001 ◽  
Vol 9 (12) ◽  
pp. 1015-1020 ◽  
Author(s):  
R. Merabtine ◽  
J. Devaud-Rzepski ◽  
M.-F. Trichet ◽  
M. Cornet
Keyword(s):  
Intermetallic Alloy ◽  
Two Phase ◽  
Phase Intermetallic

Alloy design for reducing V content of dual two-phase Ni3Al-Ni3V intermetallic alloys

2012 ◽  
Vol 1516 ◽  
pp. 127-132
Author(s):  
Takahiro Hashimoto ◽  
Yasuyuki Kaneno ◽  
Takayuki Takasugi
Keyword(s):  
Electron Concentration ◽  
Valence Electron ◽  
Base Alloy ◽  
Intermetallic Alloy ◽  
Alloy Design ◽  
Valence Electron Concentration ◽  
Intermetallic Alloys ◽  
Two Phase ◽  
Phase Intermetallic

ABSTRACTThe objective of this study is to establish alloy designing which can reduce the amount of V for a Ni-base dual two-phase intermetallic alloy, without degenerating the dual two-phase microstructure. It was demonstrated that the favorable dual two-phase microstructure will be maintained as far as the valence electron concentration (e/a) of the alloys added by Cr is not so much different from that of the base alloy (i.e. the alloy without additive elements). Consequently, it was found that the dual two-phase microstructure was maintained even though the amounts of V were reduced by 7 at.%, 7 at.%, and 10at.% by substituting of Cr for V, Cr for both of Ni and V, and Cr for Ni, respectively. The hardness of the alloys with reduced V content was higher than that of the base alloy.

Deformation Microstructures of Two-Phase Intermetallic Alloy Composed of Ni3Al and Ni3V in Single Crystalline Form

2012 ◽  
Vol 706-709 ◽  
pp. 1077-1082 ◽  
Author(s):  
T. Moronaga ◽  
Yasuyuki Kaneno ◽  
Hiroshi Tsuda ◽  
Takayuki Takasugi
Keyword(s):  
Room Temperature ◽  
Dislocation Motion ◽  
Intermetallic Alloy ◽  
High Flow ◽  
Crystalline Form ◽  
Intermetallic Alloys ◽  
Flow Strength ◽  
Two Phase ◽  
Transmission Electron ◽  
Phase Intermetallic

Two-phase single-crystal intermetallic alloys composed of Ni3Al (L12) and Ni3V (D022) with some orientations were compressed at various temperatures, and their deformation microstructures were observed by transmission electron microscopy (TEM). The deformation at room temperature was governed by the glide motion of dislocations in the primary Ni3Al precipitates and the activation of the microtwins in the Ni3V variant structures in the channel regions. The interfaces between the primary Ni3Al precipitates and the Ni3V variant structures are suggested to work as the barriers to the dislocation motion. While, at temperature above the peak temperature (873 K), the deformation microstructures of the two-phase intermetallic alloy exhibited the ribbon-like deformation microstructures penetrating the constituent phases i.e. through the interfaces between primary Ni3Al precipitates and the Ni3V variant structures in the channel regions. It was also suggested that the superior strength in the two-phase intermetallic alloys is due to the high flow strength of the Ni3V phases and to the interfacial hardening receiving when the dislocations activated in the primary Ni3Al precipitates propagate to the channel regions.

Plasma-assisted surface hardening of dual two-phase intermetallic alloy composed of Ni3X type structures

2009 ◽  
Vol 516 (1-2) ◽  
pp. 84-89 ◽  
Author(s):  
Y. Kaneno ◽  
N. Matsumoto ◽  
N. Tsuji ◽  
S. Tanaka ◽  
T. Takasugi
Keyword(s):  
Surface Hardening ◽  
Intermetallic Alloy ◽  
Two Phase ◽  
Phase Intermetallic
Sign in / Sign up

Export Citation Format

Share Document