scholarly journals From diluted solid solutions to high entropy alloys: Saturation grain size and mechanical properties after high pressure torsion

2021 ◽  
Vol 192 ◽  
pp. 43-48
Author(s):  
Tom Keil ◽  
Enrico Bruder ◽  
Mathilde Laurent-Brocq ◽  
Karsten Durst
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
High Pressure ◽  
Solid Solutions ◽  
High Pressure Torsion ◽  
High Entropy Alloys ◽  
High Entropy

scholarly journals Effect of carbon content and annealing on structure and hardness of CrFe2NiMnV0.25 high-entropy alloys processed by high-pressure torsion

2018 ◽  
Vol 53 (16) ◽  
pp. 11813-11822 ◽  
Author(s):  
Hamed Shahmir ◽  
Elena Tabachnikova ◽  
Aleksey Podolskiy ◽  
Mikhail Tikhonovsky ◽  
Terence G. Langdon
Keyword(s):  
High Pressure ◽  
Carbon Content ◽  
High Pressure Torsion ◽  
High Entropy Alloys ◽  
High Entropy

Microstructure and Mechanical Properties of Ultrafine-Grained Mg-Zn-Ca Alloy

2017 ◽  
Vol 381 ◽  
pp. 39-43 ◽  
Author(s):  
Olya B. Kulyasova ◽  
Rinat K. Islamgaliev ◽  
Ruslan Z. Valiev
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
High Pressure ◽  
Chemical Composition ◽  
High Pressure Torsion ◽  
Notable Effect ◽  
Ultrafine Grained ◽  
Mean Grain Size ◽  
High Microhardness ◽  
Mean Size

This paper studies the structure and mechanical properties of the Mg-1%Zn-xCa system subjected to high-pressure torsion (HPT) treatment. It was found that the chemical composition had a notable effect on the processes of grain refinement in the alloy. As is shown, HPT of Mg-1%Zn-0.005%Ca resulted in the formation of grains with a mean size of 250 nm, while HPT of the alloy with an increased content of Са up to 0.2% led to the formation of a nanostructure with a mean grain size of 90 nm. It is demonstrated that high microhardness is typical of all HPT-processed samples. The formation of fine Mg2Ca particles was established to increase the heat resistance of the alloy.

Effect of Initial Grain Size on Deformation Mechanism during High‐Pressure Torsion in V 10 Cr 15 Mn 5 Fe 35 Co 10 Ni 25 High‐Entropy Alloy

2019 ◽  
Vol 22 (1) ◽  
pp. 1900587 ◽  
Author(s):  
Peyman Asghari-Rad ◽  
Praveen Sathiyamoorthi ◽  
Jae Wung Bae ◽  
Hamed Shahmir ◽  
Alireza Zargaran ◽  
...  
Keyword(s):  
Grain Size ◽  
High Pressure ◽  
Deformation Mechanism ◽  
High Pressure Torsion ◽  
High Entropy Alloy ◽  
High Entropy

scholarly journals Effect of Initial Grain Size on Deformation Mechanism during High‐Pressure Torsion in V 10 Cr 15 Mn 5 Fe 35 Co 10 Ni 25 High‐Entropy Alloy

2020 ◽  
Vol 22 (1) ◽  
pp. 2070002
Author(s):  
Peyman Asghari-Rad ◽  
Praveen Sathiyamoorthi ◽  
Jae Wung Bae ◽  
Hamed Shahmir ◽  
Alireza Zargaran ◽  
...  
Keyword(s):  
Grain Size ◽  
High Pressure ◽  
Deformation Mechanism ◽  
High Pressure Torsion ◽  
High Entropy Alloy ◽  
High Entropy

Microstructure and Properties of Ultrafine Grained Cu-0.73%Cr Alloy after High Pressure Torsion

2011 ◽  
Vol 391-392 ◽  
pp. 385-389 ◽  
Author(s):  
Kun Xia Wei ◽  
Wei Wei ◽  
Igor V. Alexandrov ◽  
Qing Bo Du ◽  
Jing Hu
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Electrical Conductivity ◽  
Grain Size ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Aging Treatment ◽  
High Thermal Stability ◽  
Subsequent Aging ◽  
Ultrafine Grained

Microstructure, mechanical properties and electrical conductivity in Cu-0.73%Cr alloy after HPT process and the subsequent aging treatment have been investigated. Ultrafine grained structure with the grain size ~150 nm has been achieved after the HPT and the subsequent aging treatment. Ultrafine grains with some growth twins were preserved in the overaged state, showing high thermal stability. The peak microhardness and tensile strength of Cu-0.73%Cr alloy after the HPT was found at 480 °C for 2 hours. Electrical conductivity shows an increase trend in the different aging states.

Microstructure Evolution during High Pressure Torsion of AZ80 Magnesium Alloy

2008 ◽  
Vol 584-586 ◽  
pp. 300-305 ◽  
Author(s):  
Dogan Arpacay ◽  
Sang Bong Yi ◽  
Miloš Janeček ◽  
Adem Bakkaloglu ◽  
Lothar Wagner
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
High Pressure ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Microstructure Evolution ◽  
Significant Variation ◽  
High Pressure Torsion ◽  
Grain Structure ◽  
Az80 Magnesium Alloy

The microstructure evolution during high pressure torsion and its influence on the mechanical properties of AZ80 magnesium alloy is presented in this study. Significant grain refinement was observed after high pressure torsion, while the homogeneity of the grain structure increases with the number of revolutions. Grain size decreases to about 50 nm after 15 revolutions. The microhardness profiles measured at through-thickness and through-width directions show no significant variation at different positions of the sample. Moreover, the negligible effect of the revolution number on the microhardness value was observed.

scholarly journals High-Pressure Torsion for Synthesis of High-Entropy Alloys

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1263
Author(s):  
Kaveh Edalati ◽  
Hai-Wen Li ◽  
Askar Kilmametov ◽  
Ricardo Floriano ◽  
Christine Borchers
Keyword(s):  
High Pressure ◽  
High Pressure Torsion ◽  
High Light ◽  
Metallic Alloys ◽  
High Entropy Alloys ◽  
Hydrogen Storage Properties ◽  
High Entropy ◽  
Ultrafine Grained ◽  
Light Absorbance ◽  
Storage Properties

High-pressure torsion (HPT) is widely used not only as a severe plastic deformation (SPD) method to produce ultrafine-grained metals but also as a mechanical alloying technique to synthesize different alloys. In recent years, there have been several attempts to synthesize functional high-entropy alloys using the HPT method. In this paper, the application of HPT to synthesize high-entropy materials including metallic alloys, hydrides, oxides and oxynitrides for enhanced mechanical and hydrogen storage properties, photocatalytic hydrogen production and high light absorbance is reviewed.

Fine-tuning of mechanical properties in V10Cr15Mn5Fe35Co10Ni25 high-entropy alloy through high-pressure torsion and annealing

2020 ◽  
Vol 771 ◽  
pp. 138604 ◽  
Author(s):  
Peyman Asghari-Rad ◽  
Praveen Sathiyamoorthi ◽  
Nhung Thi-Cam Nguyen ◽  
Jae Wung Bae ◽  
Hamed Shahmir ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
High Pressure Torsion ◽  
Fine Tuning ◽  
High Entropy Alloy ◽  
High Entropy
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