Variations in grain boundary ledge structure with thermo-mechanical treatment in high-purity aluminum

1976 ◽  
Vol 10 (5) ◽  
pp. 477-480 ◽  
Author(s):  
Eswarahalli Venkatesh ◽  
L.E. Murr
Keyword(s):  
Grain Boundary ◽  
High Purity ◽  
Mechanical Treatment ◽  
High Purity Aluminum ◽  
Thermo Mechanical Treatment ◽  
Boundary Ledge

Metallurgical Effects of Grain Boundary Ledges

1977 ◽  
Vol 35 ◽  
pp. 126-129
Author(s):  
L.E. Murr
Keyword(s):  
Grain Boundary ◽  
Quantitative Data ◽  
Mechanical Treatment ◽  
Unit Length ◽  
Physical And Mechanical Properties ◽  
Direct Observations ◽  
Transmission Electron ◽  
Properties Of Materials ◽  
Thermo Mechanical Treatment ◽  
Ledge Density

Ledges in grain boundaries can be identified by their characteristic contrast features (straight, black-white lines) distinct from those of lattice dislocations, for example1,2 [see Fig. 1(a) and (b)]. Simple contrast rules as pointed out by Murr and Venkatesh2, can be established so that ledges may be recognized with come confidence, and the number of ledges per unit length of grain boundary (referred to as the ledge density, m) measured by direct observations in the transmission electron microscope. Such measurements can then give rise to quantitative data which can be used to provide evidence for the influence of ledges on the physical and mechanical properties of materials.It has been shown that ledge density can be systematically altered in some metals by thermo-mechanical treatment3,4.

Grain Boundary Engineering of Metals by Thermo-Mechanical Treatment

2010 ◽  
Vol 659 ◽  
pp. 349-354
Author(s):  
Péter János Szabó
Keyword(s):  
Heat Treatment ◽  
Grain Boundary ◽  
Stainless Steels ◽  
Mechanical Treatment ◽  
Austenitic Stainless Steels ◽  
Grain Boundary Engineering ◽  
Aisi 304 ◽  
Relative Fraction ◽  
Heat Treated ◽  
Thermo Mechanical Treatment

The relative fraction of the special grain boundaries can be increased by thermo-mechanical treatments. During this work, AISI 304-type austenitic stainless steels were plastically deformed and heat treated under different conditions, and then the grain boundary network, which developed during the treatments was investigated. Results showed that cyclic application of large cold rolling (30% reduction of thickness) and quick heat treatment at high temperature (800 °C, 2 minutes) gave the best grain boundary network. A possible reason of this behaviour is that grains which did not recrystallize after the first cycle, stored a high elastic energy, which helped the grain boundary motions in the next cycles. To characterize the developed grain boundary network, different parameters are also suggested in this paper.

scholarly journals Preferred orientation of grain boundary plane in recrystallized high purity aluminum

2014 ◽  
Vol 44 (12) ◽  
pp. 1295-1308 ◽  
Author(s):  
WenZhe CHEN ◽  
NengBin HUA ◽  
BangXin ZHOU ◽  
Chen LIN ◽  
GuangHui LI ◽  
...  
Keyword(s):  
Grain Boundary ◽  
High Purity ◽  
Preferred Orientation ◽  
Boundary Plane ◽  
Grain Boundary Plane ◽  
High Purity Aluminum

Observations of Creep of the Grain Boundary in High Purity Aluminum

JOM ◽  
1952 ◽  
Vol 4 (6) ◽  
pp. 619-625
Author(s):  
H. C. Chang ◽  
N. J. Grant
Keyword(s):  
Grain Boundary ◽  
High Purity ◽  
High Purity Aluminum
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