Grain boundary plane distributions and single-step versus multiple-step grain boundary engineering

2009 ◽  
Vol 524 (1-2) ◽  
pp. 134-142 ◽  
Author(s):  
Valerie Randle ◽  
Richard Jones
Keyword(s):  
Grain Boundary ◽  
Single Step ◽  
Boundary Plane ◽  
Grain Boundary Engineering ◽  
Grain Boundary Plane ◽  
Multiple Step

Orientation Distribution of Σ3 Grain Boundary Planes in Ni before and after Grain Boundary Engineering

2007 ◽  
Vol 558-559 ◽  
pp. 641-647 ◽  
Author(s):  
Herbert M. Miller ◽  
Chang Soo Kim ◽  
Jason Gruber ◽  
Valerie Randle ◽  
Gregory S. Rohrer
Keyword(s):  
Grain Boundary ◽  
Grain Boundaries ◽  
Orientation Distribution ◽  
Boundary Plane ◽  
Initial Structure ◽  
Grain Boundary Engineering ◽  
Relative Population ◽  
Grain Boundary Plane ◽  
Before And After ◽  
Average Size

The distribution of grain boundary plane orientations in polycrystalline Ni has been measured before and after grain boundary engineering. The grain boundary engineered microstructure has a relatively higher concentration of Σ3 grain boundaries and, when compared to the initial structure, more of these boundaries have orientations that are inclined by more than 10° from the (111) orientation of the ideal coherent twin. Although the conventionally measured grain size is not affected by the grain boundary engineering process, the average size of the regions containing only Σ3n grain boundaries increases by nearly a factor of two. The observations indicate that the increase in the relative population of Σ3 grain boundaries results both from the preferential elimination of random grain boundaries and the generation of new Σ3 grain boundaries which do not have (111) grain boundary plane orientations.

Growth Induced Grain Boundary Plane Oscillations in YBa2Cu3O7

1998 ◽  
Vol 294-296 ◽  
pp. 119-122
Author(s):  
J. Ayache ◽  
A. Thorel ◽  
S. Jong Kim ◽  
J. Lesueur ◽  
K.H. Westmacott ◽  
...  
Keyword(s):  
Grain Boundary ◽  
Boundary Plane ◽  
Grain Boundary Plane ◽  
Plane Oscillations

scholarly journals INTERGRANULAR SULFUR SEGREGATION AND GRAIN BOUNDARY PLANE IN A NICKEL BICRYSTAL

1990 ◽  
Vol 51 (C1) ◽  
pp. C1-341-C1-346 ◽  
Author(s):  
W. SWIATNICKI ◽  
S. LARTIGUE ◽  
M. BISCONDI ◽  
D. BOUCHET
Keyword(s):  
Grain Boundary ◽  
Boundary Plane ◽  
Sulfur Segregation ◽  
Grain Boundary Plane

Grain-boundary plane crystallography and energy in austenitic steel

1996 ◽  
Vol 35 (7) ◽  
pp. 831-836 ◽  
Author(s):  
Mark Caul ◽  
Jörn Fiedler ◽  
Valerie Randle
Keyword(s):  
Grain Boundary ◽  
Austenitic Steel ◽  
Boundary Plane ◽  
Grain Boundary Plane

Structure and Dissociation of 15° Tilt Boundaries in Germanium

1983 ◽  
Vol 25 ◽  
Author(s):  
W. Skrotzki ◽  
H. Wendt ◽  
C. B. Carter ◽  
D. L. Kohlstedt
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Grain Boundary ◽  
Czochralski Method ◽  
Boundary Plane ◽  
First Order ◽  
Grain Boundary Plane ◽  
Transmission Electron ◽  
Theoretical Predictions ◽  
Tilt Boundaries

ABSTRACTThe structure and dissociation of grain boundaries in Ge bicrystals, grown by the Czochralski method, have been analyzed by visible light and transmission electron microscopy. The seed crystals were oriented to yield either a symmetric or an asymmetric grain boundary plane with a 15° rotation about a common <110> direction. The asymmetric boundary, with a {111} boundary plane, dissociated along most of its length into a first order twin boundary (Σ 3) and a symmetric 55° grain boundary (Σ 41c). The symmetric 15° boundary is composed of an array of Lomer dislocations. Contrary to theoretical predictions, this boundary is stable.

Sign in / Sign up

Export Citation Format

Share Document