scholarly journals Phase Formation during Solidification of Mg-Nd-Zn Alloys: An In Situ Synchrotron Radiation Diffraction Study

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1637 ◽  
Author(s):  
Domonkos Tolnai ◽  
Tungky Subroto ◽  
Serge Gavras ◽  
Ricardo Buzolin ◽  
Andreas Stark ◽  
...  
Keyword(s):  
Rare Earth ◽  
Synchrotron Radiation ◽  
Diffraction Study ◽  
Phase Formation ◽  
Theoretical Calculations ◽  
Alloy System ◽  
Zn Addition ◽  
Synchrotron Radiation Diffraction ◽  
Zn Alloys

Mg-4Nd base alloys with Zn additions of 3, 5 and 8 wt % were investigated with in situ synchrotron radiation diffraction during solidification. This method enabled the investigation of phase formation and transformation in the alloys. The diffraction results were supported with TEM observations on the as-solidified samples. The results show the effect of increased Zn addition on stabilizing the Mg3RE phase (RE—rare earth). The experimental results agree only partially with the theoretical calculations indicating the need to improve the existing thermodynamic database on the alloy system.

scholarly journals In Situ Synchrotron Diffraction Analysis of Zn Additions on the Compression Properties of NK30

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3935
Author(s):  
Domonkos Tolnai ◽  
Marie-Anne Dupont ◽  
Serge Gavras ◽  
Klaudia Fekete-Horváth ◽  
Andreas Stark ◽  
...  
Keyword(s):  
Room Temperature ◽  
Deformation Twin ◽  
Deformation Mechanisms ◽  
Synchrotron Diffraction ◽  
Compression Properties ◽  
Zn Addition ◽  
Synchrotron Radiation Diffraction ◽  
Twin Growth ◽  
Zn Alloys

In situ synchrotron radiation diffraction was performed during the compression of as-cast Mg–3Nd–Zn alloys with different amounts (0, 0.5, 1, and 2 wt %) of Zn addition at room temperature. During the tests, the acoustic emission signals of the samples were recorded. The results show that the addition of Zn decreased the strength of the alloys but, at the same time, increased their ductility. In the earlier stages of deformation, twin formation and basal slip were the dominant deformation mechanisms. The twins tended to grow during the entire compression stage; however, the formation of new twins dominated only at the beginning of the plastic deformation. In order to accommodate the strain levels, the alloys containing Zn underwent nonbasal slip in the later stages of deformation. This can be attributed to the presence of precipitates containing Zn in the microstructure, inhibiting twin growth.

scholarly journals The Role of Zn on the Elevated Temperature Compression Behavior of Mg5Nd: An In Situ Synchrotron Radiation Diffraction Study

JOM ◽  
2016 ◽  
Vol 68 (12) ◽  
pp. 3051-3056 ◽  
Author(s):  
D. Tolnai ◽  
R. H. Buzolin ◽  
F. D‘Elia ◽  
T. Subroto ◽  
S. Gavras ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Synchrotron Radiation ◽  
Diffraction Study ◽  
Compression Behavior ◽  
Synchrotron Radiation Diffraction ◽  
Role Of Zn

scholarly journals Structural elucidation of the degradation mechanism of nickel-rich layered cathodes during high-voltage cycling

2020 ◽  
Vol 56 (36) ◽  
pp. 4886-4889 ◽  
Author(s):  
Jing Lai ◽  
Jun Zhang ◽  
Zuowei Li ◽  
Yao Xiao ◽  
Weibo Hua ◽  
...  
Keyword(s):  
High Resolution ◽  
Synchrotron Radiation ◽  
High Voltage ◽  
Degradation Mechanism ◽  
Structural Elucidation ◽  
Synchrotron Radiation Diffraction ◽  
Voltage Region ◽  
High Voltage Region ◽  
Layered Cathodes

A splitting of two O3 phases, rather than the often observed O1 phases in the conventional LiCoO2 electrode, was discovered in the LiNi0.85Co0.10Mn0.05O2 at high-voltage region (>4.6 V) by in situ high-resolution synchrotron radiation diffraction.

scholarly journals Fast-current-heating devices to study in situ phase formation in metallic glasses by using high-energy synchrotron radiation

2020 ◽  
Vol 91 (7) ◽  
pp. 073901
Author(s):  
Jiri Orava ◽  
Konrad Kosiba ◽  
Xiaoliang Han ◽  
Ivan Soldatov ◽  
Olof Gutowski ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Formation ◽  
Metallic Glasses ◽  
High Energy

Orthorhombic phase formation in a Nb-rich γ-TiAl based alloy – An in situ synchrotron radiation investigation

2016 ◽  
Vol 121 ◽  
pp. 343-351 ◽  
Author(s):  
Marcus Willi Rackel ◽  
Andreas Stark ◽  
Heike Gabrisch ◽  
Norbert Schell ◽  
Andreas Schreyer ◽  
...  
Keyword(s):  
Synchrotron Radiation ◽  
Phase Formation ◽  
Orthorhombic Phase
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