Formation of a DO19 phase in zirconiumaluminium martensites

1978 ◽  
Vol 13 (9) ◽  
pp. 2066-2068 ◽  
Author(s):  
P. Mukhopadhyay ◽  
V. Raman ◽  
S. Banerjee ◽  
R. Krishnan
Keyword(s):  
Do19 Phase

Formation and magnetic properties of hexagonal DO19 phase in Fe2MnGa: An experimental and theoretical investigation

2020 ◽  
Vol 117 ◽  
pp. 106671 ◽  
Author(s):  
Qingshuai Li ◽  
Kaichen Sun ◽  
Shuang Liu ◽  
Hongzhi Luo ◽  
Fanbin Meng
Keyword(s):  
Magnetic Properties ◽  
Theoretical Investigation ◽  
Do19 Phase

An investigation of the ordered DO19 phase formation in the Ti-Al system

1986 ◽  
Vol 21 (12) ◽  
pp. 4143-4146 ◽  
Author(s):  
S. Sircar ◽  
K. Narasimhan ◽  
K. Mukherjee
Keyword(s):  
Phase Formation ◽  
Do19 Phase

The L12 to DO19 Phase Transformation In The Intermetallic Compound Fe3Ge

1997 ◽  
Vol 481 ◽  
Author(s):  
Q. Z. Chen ◽  
A. H. W. Ngan ◽  
B. J. Duggan
Keyword(s):  
Phase Transformation ◽  
Electron Microscope ◽  
Intermetallic Compound ◽  
Transmission Electron Microscope ◽  
Stacking Fault ◽  
Transmission Electron ◽  
Do19 Phase ◽  
Annealing Experiments

ABSTRACTA large kinetics hysteresis is found to exist between the forward and backward reactions of the L12 ↔ DO19 transformation in Fe3Ge. The slow DO19 to L12 transformation leaves behind very stable twins and stacking fault debris. In-situ annealing experiments in the transmission electron microscope revealed that nucleation for the reverse L12 to DO19 reaction takes place efficiently at these defects.

Mo Effect on the Microstructure in Co-Al-W-Based Superalloys

2010 ◽  
Vol 654-656 ◽  
pp. 420-423 ◽  
Author(s):  
Fei Xue ◽  
Zhi Qiang Li ◽  
Qiang Feng
Keyword(s):  
Solution Treatment ◽  
Aging Treatment ◽  
Eutectic Structure ◽  
Phase Precipitation ◽  
State Transformation ◽  
Solid State Transformation ◽  
Heat Treated ◽  
Cast Alloys ◽  
Do19 Phase ◽  
Mo Effect

The as-cast and heat-treated microstructure has been investigated in Co-Al-W-based superalloys with additions of 2 and 4 at.% Mo. The results revealed that Mo promoted the formation of (μ+γ) eutectic structure in the as-cast alloys and μ-phase precipitation after solution treatment. In addition, after aging treatment at 900oC, an extensive network of DO19 precipitates was observed, besides the γ+γ′ primary phases and the μ phase inherited from the as-cast and solution-treated conditions. Meanwhile, a solid-state transformation from the μ phase to the DO19 phase occurred; and long-term aging enhanced this transformation. In addition, high levels of Mo promoted the DO19-phase precipitation.

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