EBSP: A powerful tool in studying recrystallization of metals

1994 ◽  
Vol 52 ◽  
pp. 610-611
Author(s):  
T. Furu ◽  
O. Lohne ◽  
Ø. Sødahl ◽  
E. Nes
Keyword(s):  
Texture Evolution ◽  
Basic Research ◽  
Recrystallization Process ◽  
Large Area ◽  
X Ray ◽  
Local Texture ◽  
Subgrain Growth ◽  
Short Processing Time ◽  
Back Scattering ◽  
Established Technique

The Electron Back Scattering Pattern Technique (EBSP), for measurements of crystal orientations is now a well established technique for microtexlure detennination. The application of the technique to material problems has increased quite substantially the last years, both in basic research and in more industry related problems. When studying the recrystallization process in detail a relatively large area of a specimen has to be investigated to obtain good statistical results. With a resolution of the order of 0.5-1 μm and a short processing time the EBSPtechnique has shown to be advantageous compared to TEM on one side and X-ray and neutron diffraction on the other. By the EBSP-technique we are able to follow the local texture evolution during transformation and are at the same time able to analyse changes in the untransfonncd matrix (i.e. subgrain growth etc.).It is well accepted that the formation of recrystallization nuclei is a highly heterogeneous process.

scholarly journals Texture Evolution during Annealing of Warm Rolled Cr-Containing Low Carbon Steels

2007 ◽  
Vol 558-559 ◽  
pp. 295-300 ◽  
Author(s):  
Elena V. Pereloma ◽  
Azdiar A. Gazder ◽  
John J. Jonas ◽  
Chris H.J. Davies
Keyword(s):  
Texture Evolution ◽  
Shear Bands ◽  
Carbon Steels ◽  
Lower Amount ◽  
Low Carbon ◽  
X Ray Diffraction ◽  
Low Carbon Steels ◽  
X Ray ◽  
Cr Content ◽  
Back Scattering

Two low carbon steels alloyed with 0.48wt% and 0.78wt% Cr were warm rolled to 65% reduction at 640°C. Annealing was carried out at 710°C to achieve a range of recrystallized volume fractions up to 100%. Texture analysis was performed by X-ray diffraction and Electron Back Scattering Diffraction. During the initial stages of recrystallization, more recrystallized grains nucleated at shear bands than at grain boundaries in the 0.48wt%Cr steel, whereas this was not the case in the 0.78wt%Cr steel. This is associated with a decrease in the propensity to form shear bands due to the lower amount of C in solid solution in the high-Cr steel. Additionally, the nuclei showed a preference to develop the same fiber as the deformed region within which they nucleated. In both steels, an increase in the annealing time led to the deterioration of the ND (or γ) –fiber and a strengthening of both the RD (or α) –fiber and Goss component. In the fully recrystallized samples, the ND component was somewhat stronger in the steel with the higher Cr content.

Evolution of Cube Texture in Cu-45at.%Ni Alloy Substrates for YBCO Coated Conductors

2015 ◽  
Vol 778 ◽  
pp. 105-109
Author(s):  
Hui Tian ◽  
Yi Wang ◽  
Pan Wang ◽  
Ya Ru Liang ◽  
Lin Ma ◽  
...  
Keyword(s):  
Grain Growth ◽  
Texture Evolution ◽  
Cube Texture ◽  
Rolling Texture ◽  
Coated Conductors ◽  
Recrystallization Process ◽  
Ni Alloy ◽  
Back Scattering ◽  
Cold Rolled ◽  
Ybco Coated Conductors

The cube texture evolution during annealing of the heavy cold-rolled Cu-45at.%Ni alloy tapes were investigated by XRD and electron back scattering diffraction techniques. The results indicated that the fraction of Copper-type rolling texture was slightly strengthened during recovery, and then strongly reduced during recrystallization. The cube texture was formed by consuming the rolling texture components during recrystallization process, and the S, Copper and Brass orientations were consumed together via cube grain growth. A strong cube-textured Cu-45at.%Ni alloy substrate with the cube texture fraction of 98.6 % (< 10°) was obtained after annealing at 1000 oC for 1 h.

Position Resolved In-Situ X-Ray Observation of Recrystallization and Its Description by Self-Organized Criticality

2004 ◽  
Vol 467-470 ◽  
pp. 689-696
Author(s):  
Thomas Wroblewski
Keyword(s):  
Diffraction Method ◽  
Recrystallization Process ◽  
X Ray Diffraction ◽  
Large Area ◽  
Polycrystalline Specimen ◽  
X Ray ◽  
Self Organized ◽  
In Situ Investigation ◽  
Self Organized Criticality

A novel X-ray diffraction method, allowing the position resolved imaging of a polycrystalline specimen using the diffracted radiation, was applied for in situ investigation of recrystallization of cold-rolled copper. A large area of the specimen could be observed simultaneously, yielding information about nucleation and growth of many individual crystallites. The recrystallization process showed a stochastic behavior which can be described by the model of self-organized criticality.

Texture Evolution Under Fast Heating and Cooling Rates of Zirconium Alloys Studied In-Situ by Synchrotron X-Ray Diffraction

2020 ◽  
Author(s):  
Chi-Toan Nguyen ◽  
Alistair Garner ◽  
Javier Romero ◽  
Antoine Ambard ◽  
Michael Preuss ◽  
...  
Keyword(s):  
Texture Evolution ◽  
Zirconium Alloys ◽  
X Ray Diffraction ◽  
Fast Heating ◽  
Cooling Rates ◽  
X Ray ◽  
Heating And Cooling

scholarly journals The hard X-ray response of a large area HgI2 detector

2002 ◽  
Vol 487 (1-2) ◽  
pp. 90-95 ◽  
Author(s):  
Alan Owens ◽  
H Andersson ◽  
M Bavdaz ◽  
L van den Berg ◽  
A Peacock ◽  
...  
Keyword(s):  
Large Area ◽  
X Ray

scholarly journals Discovery of recombining plasma inside the extended gamma-ray supernova remnant HB9

2019 ◽  
Vol 489 (3) ◽  
pp. 4300-4310 ◽  
Author(s):  
A Sezer ◽  
T Ergin ◽  
R Yamazaki ◽  
H Sano ◽  
Y Fukui
Keyword(s):  
Supernova Remnant ◽  
Gamma Ray ◽  
Radio Continuum ◽  
Continuum Emission ◽  
Large Area ◽  
Imaging Spectrometer ◽  
X Ray ◽  
East Region ◽  
X Ray Imaging ◽  
Collisional Ionization

ABSTRACT We present the results from the Suzaku X-ray Imaging Spectrometer observation of the mixed-morphology supernova remnant (SNR) HB9 (G160.9+2.6). We discovered recombining plasma (RP) in the western Suzaku observation region and the spectra here are well described by a model having collisional ionization equilibrium (CIE) and RP components. On the other hand, the X-ray spectra from the eastern Suzaku observation region are best reproduced by the CIE and non-equilibrium ionization model. We discuss possible scenarios to explain the origin of the RP emission based on the observational properties and concluded that the rarefaction scenario is a possible explanation for the existence of RP. In addition, the gamma-ray emission morphology and spectrum within the energy range of 0.2–300 GeV are investigated using 10 yr of data from the Fermi Large Area Telescope (LAT). The gamma-ray morphology of HB9 is best described by the spatial template of radio continuum emission. The spectrum is well fit to a log-parabola function and its detection significance was found to be 25σ. Moreover, a new gamma-ray point source located just outside the south-east region of the SNR’s shell was detected with a significance of 6σ. We also investigated the archival H i and CO data and detected an expanding shell structure in the velocity range of $-10.5$ and $+1.8$ km s−1 that is coinciding with a region of gamma-ray enhancement at the southern rim of the HB9 shell.

In Situ Synchrotron X-Ray Diffraction Study of a Deformed Cu-Fe-P Alloy during Heating

2016 ◽  
Vol 850 ◽  
pp. 191-196 ◽  
Author(s):  
Wei Wang ◽  
Cun Lei Zou ◽  
Ren Geng Li ◽  
Wen Wen ◽  
Hui Jun Kang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Lattice Distortion ◽  
Copper Matrix ◽  
Heating Process ◽  
Recrystallization Process ◽  
Full Width ◽  
X Ray Diffraction ◽  
Dramatic Decrease ◽  
X Ray

In situ synchrotron X-ray diffraction was used to study a deformed Cu-0.88 Fe-0.24 P alloy during heating process. The measurements were performed at room temperature and also at high temperatures up to 893 K in order to determine the recovery, ageing and recrystallization process. With the increase of temperature, the angles of copper matrix peaks moved left and the FWHM (full width at half maximum) decreased slightly. Fe3P precipitates were first detected at 533 K, reached the maximum at 673 K, and re-dissolved into matrix at 853 K. A dramatic decrease in FWHM was observed accompanied by the precipitation of Fe3P phases, indicating the reduction of lattice distortion of copper matrix.

Recrystallization of metamict allanite

2011 ◽  
Vol 75 (4) ◽  
pp. 2393-2399 ◽  
Author(s):  
T. Beirau ◽  
C. Paulmann ◽  
U. Bismayer
Keyword(s):  
Crystal Structure ◽  
Igneous Rocks ◽  
Accessory Mineral ◽  
Recrystallization Process ◽  
Radioactive Elements ◽  
X Ray Diffraction ◽  
Geological Time ◽  
Α Decay ◽  
X Ray ◽  
Structural Recovery

AbstractAllanite is a common accessory mineral in igneous rocks. Allanite becomes metamict over geological time-scales as a result of the α-decay of radioactive elements in the crystal structure. This study focuses on the recrystallization of metamict allanite from Savvushka, Russia. The structural recovery produced by annealing was investigated by X-ray powder diffraction, single-crystal synchrotron X-ray diffraction and infrared spectroscopy. A kinetic analysis is presented that shows that the recrystallization process proceeds by at least two different mechanisms.

Sign in / Sign up

Export Citation Format

Share Document