Influence of hydrogen-charging on microstructure and microhardness of high-nitrogen austenitic steel processed by high-pressure torsion

2018 ◽  
Author(s):  
Galina Maier ◽  
Elena Astafurova ◽  
Valentina Moskvina ◽  
Eugene Melnikov ◽  
Sergey Astafurov ◽  
...  
Keyword(s):  
High Pressure ◽  
Austenitic Steel ◽  
High Pressure Torsion ◽  
High Nitrogen ◽  
Hydrogen Charging

scholarly journals The effect of high-pressure torsion on microstructure and strength properties of high-nitrogen austenitic steel

2014 ◽  
Vol 4 (4) ◽  
pp. 269-272 ◽  
Author(s):  
E. G. Astafurova ◽  
M. S. Tukeeva ◽  
V. A. Moskvina ◽  
N. K. Galchenko ◽  
I. A. Bataev ◽  
...  
Keyword(s):  
High Pressure ◽  
Austenitic Steel ◽  
High Pressure Torsion ◽  
Strength Properties ◽  
High Nitrogen

Microhardness homogeneity and microstructure of high-nitrogen austenitic steel processed by high-pressure torsion

2017 ◽  
Author(s):  
Galina Maier ◽  
Elena Astafurova ◽  
Eugene Melnikov ◽  
Valentina Moskvina ◽  
Nina Galchenko ◽  
...  
Keyword(s):  
High Pressure ◽  
Austenitic Steel ◽  
High Pressure Torsion ◽  
High Nitrogen

Reversible Martensitic Transformation Produced by Severe Plastic Deformation of Metastable Austenitic Steel

2013 ◽  
Vol 738-739 ◽  
pp. 491-495 ◽  
Author(s):  
Igor Litovchenko ◽  
Alexander Tyumentsev ◽  
Alexander V. Korznikov
Keyword(s):  
Plastic Deformation ◽  
High Pressure ◽  
Martensitic Transformation ◽  
Severe Plastic Deformation ◽  
Dynamic Recrystallization ◽  
Austenitic Steel ◽  
High Pressure Torsion ◽  
Martensitic Transformations ◽  
Metastable Austenitic Steel ◽  
Nanostructured States

The peculiarities of martensitic transformations and formation of nanostructured states in metastable austenitic steel (Fe-18Cr-8Ni-Ti) after severe plastic deformation by high pressure torsion are investigated. It is shown that during severe plastic deformation with increased strain rate not only direct (γ→α΄) but also reverse (α΄→γ) martensitic transformations occur, which is revealed by the changes in the volume content of α΄ - martensite during deformation. The fragments thought to be formed by direct and reverse martensitic transformations and those of dynamic recrystallization of austenite are observed.

scholarly journals Microstructural evolution during gaseous hydrogen charging of Zircaloy-4 processed by high-pressure torsion: A comparative study

2012 ◽  
Vol 68 ◽  
pp. 310-313 ◽  
Author(s):  
Zhiyang Wang ◽  
Huijun Li ◽  
Ulf Garbe ◽  
Mark D. Callaghan ◽  
Yanbo Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Comparative Study ◽  
Microstructural Evolution ◽  
High Pressure Torsion ◽  
Gaseous Hydrogen ◽  
Hydrogen Charging
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