scholarly journals Perfect short-range ordered alloy with line-compound-like properties in the ZnSnN2:ZnO system

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Jie Pan ◽  
Jacob J. Cordell ◽  
Garritt J. Tucker ◽  
Andriy Zakutayev ◽  
Adele C. Tamboli ◽  
...  
Keyword(s):  
Author(s):  
K. Vasudevan ◽  
H. P. Kao ◽  
C. R. Brooks ◽  
E. E. Stansbury

The Ni4Mo alloy has a short-range ordered fee structure (α) above 868°C, but transforms below this temperature to an ordered bet structure (β) by rearrangement of atoms on the fee lattice. The disordered α, retained by rapid cooling, can be ordered by appropriate aging below 868°C. Initially, very fine β domains in six different but crystallographically related variants form and grow in size on further aging. However, in the temperature range 600-775°C, a coarsening reaction begins at the former α grain boundaries and the alloy also coarsens by this mechanism. The purpose of this paper is to report on TEM observations showing the characteristics of this grain boundary reaction.


Author(s):  
E.A. Kenik ◽  
T.A. Zagula ◽  
M.K. Miller ◽  
J. Bentley

The state of long-range order (LRO) and short-range order (SRO) in Ni4Mo has been a topic of interest for a considerable time (see Brooks et al.). The SRO is often referred to as 1½0 order from the apparent position of the diffuse maxima in diffraction patterns, which differs from the positions of the LRO (D1a) structure. Various studies have shown that a fully disordered state cannot be retained by quenching, as the atomic arrangements responsible for the 1½0 maxima are present at temperatures above the critical ordering temperature for LRO. Over 20 studies have attempted to identify the atomic arrangements associated with this state of order. A variety of models have been proposed, but no consensus has been reached. It has also been shown that 1 MeV electron irradiation at low temperatures (∼100 K) can produce the disordered phase in Ni4Mo. Transmission electron microscopy (TEM), atom probe field ion microscopy (APFIM), and electron irradiation disordering have been applied in the current study to further the understanding of the ordering processes in Ni4Mo.


1969 ◽  
Vol 14 (8) ◽  
pp. 437-438
Author(s):  
CELIA STENDLER LAVATELLI

1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-175-Pr2-178 ◽  
Author(s):  
G. T. Pérez ◽  
F. H. Salas ◽  
R. Morales ◽  
L. M. Álvarez-Prado ◽  
J. M. Alameda

1982 ◽  
Vol 43 (11) ◽  
pp. 1699-1706 ◽  
Author(s):  
H. Bouchiat ◽  
E. Dartyge

1977 ◽  
Vol 38 (C7) ◽  
pp. C7-173-C7-173
Author(s):  
J.-P. CHEVALIER ◽  
W. M. STOBBS

1983 ◽  
Vol 44 (C3) ◽  
pp. C3-167-C3-170
Author(s):  
E. Cernia ◽  
L. D'Ilario ◽  
E. Ferretti ◽  
G. Nencini
Keyword(s):  

1982 ◽  
Vol 43 (C9) ◽  
pp. C9-681-C9-684 ◽  
Author(s):  
J. P. Sanchez ◽  
J. M. Friedt

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