scholarly journals Estimation of Change in Dislocation Structure in Severely Cold-rolled Pure Iron, Fe-0.3 mass%Al Alloy and Fe-0.3 mass%Si Alloy by X-ray Line Profile Analysis and Transmission Electron Microscopy

2017 ◽  
Vol 103 (3) ◽  
pp. 149-156 ◽  
Author(s):  
Miho Tomita ◽  
Mitsuharu Yonemura ◽  
Tooru Inaguma ◽  
Hiroaki Sakamoto ◽  
Kohsaku Ushioda
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Line Profile ◽  
Pure Iron ◽  
Profile Analysis ◽  
Al Alloy ◽  
Line Profile Analysis ◽  
X Ray ◽  
Transmission Electron ◽  
Cold Rolled

scholarly journals Correlation between subgrains and coherently scattering domains

2005 ◽  
Vol 20 (4) ◽  
pp. 366-375 ◽  
Author(s):  
T. Ungár ◽  
G. Tichy ◽  
J. Gubicza ◽  
R. J. Hellmig
Keyword(s):  
Electron Microscopy ◽  
Line Profile ◽  
Profile Analysis ◽  
Subgrain Size ◽  
Domain Size ◽  
Line Profile Analysis ◽  
X Rays ◽  
X Ray ◽  
Transmission Electron ◽  
Dislocation Walls

Crystallite size determined by X-ray line profile analysis is often smaller than the grain or subgrain size obtained by transmission electron microscopy, especially when the material has been produced by plastic deformation. It is shown that besides differences in orientation between grains or subgrains, dipolar dislocation walls without differences in orientation also break down coherency of X-rays scattering. This means that the coherently scattering domain size provided by X-ray line profile analysis provides subgrain or cell size bounded by dislocation boundaries or dipolar walls.

scholarly journals Effect of Instrumental Correction on X-ray Line Profile Analysis in Cold Rolled Ferritic Steel

2018 ◽  
Vol 58 (6) ◽  
pp. 1181-1183 ◽  
Author(s):  
Setsuo Takaki ◽  
Takuro Masumura ◽  
Fulin Jiang ◽  
Toshihiro Tsuchiyama
Keyword(s):  
Line Profile ◽  
Ferritic Steel ◽  
Profile Analysis ◽  
Line Profile Analysis ◽  
X Ray ◽  
Cold Rolled

Irreversible transformation in as-cast FeAl B2-ordered alloy obtained by melt spinning

2000 ◽  
Vol 15 (3) ◽  
pp. 659-664 ◽  
Author(s):  
E. Bonetti ◽  
R. Montanari ◽  
C. Testani ◽  
G. Valdrè
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Melt Spinning ◽  
Al Alloy ◽  
Microstructural Stability ◽  
X Ray Diffraction ◽  
Repeated Heating ◽  
X Ray ◽  
Transmission Electron ◽  
Stage Process

The aim of the work described in the present paper was to investigate the microstructural stability during annealing treatments of a Fe–Al alloy obtained by melt spinning. To this purpose internal friction (IF) and dynamic modulus (Md) measurements were employed, and the results correlated with x-ray diffraction, optical microscopy, and scanning and transmission electron microscopy observations. In particular, the B2-ordered Fe–38A1–2Cr–0.015C–0.003B (in at.%) alloy was studied during repeated heating runs from room temperature to 823 K by IF and Md. The modulus exhibited a broad maximum (in the range of 600–800 K) only in the first run. On the basis of transmission electron microscopy and x-ray diffraction analysis, the irreversible transformation was explained by considering a two-stage process that occurs when vacancies in supersaturation move toward dislocations. The first stage is connected to dislocation locking; the second one is due to annihilation of some vacancies by dislocation climb.

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