scholarly journals Analysis of the Precipitation and Growth Processes of the Intermetallic Phases in an Fe-Ni Superalloy

Superalloys ◽  
10.5772/61159 ◽  
2015 ◽  
Author(s):  
Kazimierz J. Ducki
Keyword(s):  
Intermetallic Phases ◽  
Growth Processes

Identification by Electron Microdiffraction of Intermetallic Phases in a Duplex Stainless Steel

1990 ◽  
Vol 48 (2) ◽  
pp. 494-495
Author(s):  
A. Redjaïmia ◽  
J.P. Morniroli ◽  
G. Metauer ◽  
M. Gantois
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Convergent Beam Electron Diffraction ◽  
Intermetallic Phases ◽  
Small Particles ◽  
Parallel Beam ◽  
Diffraction Patterns ◽  
Average Size ◽  
Convergent Beam ◽  
Electron Microdiffraction

2D and especially 3D symmetry information required to determine the crystal structure of four intermetallic phases present as small particles (average size in the range 100-500nm) in a Fe.22Cr.5Ni.3Mo.0.03C duplex stainless steel is not present in most Convergent Beam Electron Diffraction (CBED) patterns. Nevertheless it is possible to deduce many crystal features and to identify unambiguously these four phases by means of microdiffraction patterns obtained with a nearly parallel beam focused on a very small area (50-100nm).From examinations of the whole pattern reduced (RS) and full (FS) symmetries the 7 crystal systems and the 11 Laue classes are distinguished without ambiguity (1). By considering the shifts and the periodicity differences between the ZOLZ and FOLZ reflection nets on specific Zone Axis Patterns (ZAP) which depend on the crystal system, the centering type of the cell and the glide planes are simultaneously identified (2). This identification is easily done by comparisons with the corresponding simulated diffraction patterns.

Review of Child Development: A Study of Growth Processes.

1972 ◽  
Vol 17 (2) ◽  
pp. 78-78
Author(s):  
HAROLD STEVENSON
Keyword(s):  
Child Development ◽  
Growth Processes

Modeling of dynamic failure by nucleation and growth processes

2000 ◽  
Vol 10 (PR9) ◽  
pp. Pr9-829-Pr9-834
Author(s):  
S. Hanim ◽  
S. Ahzi
Keyword(s):  
Nucleation And Growth ◽  
Dynamic Failure ◽  
Growth Processes

BALL MILLING OF INTERMETALLIC PHASES IN THE Nb-Al SYSTEM

1990 ◽  
Vol 51 (C4) ◽  
pp. C4-169-C4-174 ◽  
Author(s):  
M. OEHRING ◽  
R. BORMANN
Keyword(s):  
Ball Milling ◽  
Intermetallic Phases

Change of growth processes of annual crops depending on the method of cultivation, seeding rate and fertilization

2019 ◽  
pp. 43-48
Author(s):  
N. Y. Hetman ◽  
Y. A. Veklenko ◽  
T. P. Zakhlebna ◽  
E. N. Ksenchyna
Keyword(s):  
Field Pea ◽  
Seeding Rate ◽  
Growth Processes ◽  
Annual Crops ◽  
Leguminous Crops

Analysis of the height and leafiness of plants of oats (fodder), pea (spring), field pea was carried out depending on the seeding rates and fertilization. It was established that under the increase in the seeding rate of oats by 25 %, the height of plants of the grass and legume components rose irrespectively of the rate of fertilization. The leafiness of leguminous crops was 2.9—3.1 times higher than that of oats.

Experience with nutrient removal in a fixed-film system at full-scale wastewater treatment plants

1997 ◽  
Vol 36 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Vibeke R. Borregaard
Keyword(s):  
Wastewater Treatment ◽  
Surface Area ◽  
Nutrient Removal ◽  
Wastewater Treatment Plants ◽  
High Specific Surface Area ◽  
Biological Nutrient Removal ◽  
Growth Processes ◽  
Total N ◽  
Attached Growth ◽  
On Line

In the upgrade of wastewater treatment plants to include biological nutrient removal the space available is often a limiting facor. It may be difficult to use conventional suspended growth processes (i.e. activated sludge) owing to the relatively large surface area required for these processes. Recent years have therefore seen a revived interest in treatment technologies using various types of attached growth processes. The “new” attached growth processes, like the Biostyr process, utilise various kinds of manufactured media, e.g. polystyrene granules, which offer a high specific surface area, and are therefore very compact. The Biostyr plants allow a combination of nitrification-denitrification and filtration in one and the same unit. The results obtained are 8 mg total N/l and an SS content normally below 10 mg/l. The plants in Denmark which have been extended with a Biostyr unit have various levels of PLC control and on-line instrumentation.

scholarly journals Possibilities of predicting undesirable iron intermetallic phases in secondary Al-alloys

2021 ◽  
Vol 55 ◽  
pp. 797-804
Author(s):  
Ivana Švecová ◽  
Eva Tillová ◽  
Lenka Kuchariková ◽  
Vidžaja Knap
Keyword(s):  
Intermetallic Phases ◽  
Al Alloys ◽  
Iron Intermetallic
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