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.

Effect of initial powder type on the hydrogen storage properties of high-pressure torsion consolidated Mg

2017 ◽  
Vol 42 (35) ◽  
pp. 22438-22448 ◽  
Author(s):  
Subrata Panda ◽  
Jean-Jacques Fundenberger ◽  
Yajun Zhao ◽  
Jianxin Zou ◽  
Laszlo S. Toth ◽  
...  
Keyword(s):  
High Pressure ◽  
Hydrogen Storage ◽  
High Pressure Torsion ◽  
Initial Powder ◽  
Hydrogen Storage Properties ◽  
Powder Type ◽  
Storage Properties

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

Micro-Scale Mechanical Behavior of Ultrafine-Grained Materials Processed by High-Pressure Torsion

2018 ◽  
Vol 941 ◽  
pp. 1495-1500
Author(s):  
Megumi Kawasaki ◽  
Jae Kyung Han ◽  
Dong Hyung Lee ◽  
Jae Il Jang ◽  
Terence G. Langdon
Keyword(s):  
High Pressure ◽  
Mechanical Behavior ◽  
Mechanical Response ◽  
High Pressure Torsion ◽  
Annealing Treatment ◽  
Rate Sensitivity ◽  
Small Scale ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Ultrafine Grained

Bulk ultrafine-grained (UFG) materials usually show superior mechanical and physical properties. The development of micro-mechanical behavior is observed after significant changes in microstructure through high-pressure torsion (HPT) processing. This report summarizes recent results on the evolution of small-scale mechanical response examined by the nanoindentation technique on two UFG materials including a high-entropy alloy and an Al-Mg metal matrix nanocomposite processed by HPT. Special emphasis is placed on demonstrating the interrelationship of essential microstructural changes with increasing torsional strain and applying a post-deformation annealing treatment and the evolution of the micro-mechanical behavior in these UFG materials by estimating the strain rate sensitivity.

scholarly journals Applications of High-Pressure Technology for High-Entropy Alloys: A Review

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 867 ◽  
Author(s):  
Wanqing Dong ◽  
Zheng Zhou ◽  
Mengdi Zhang ◽  
Yimo Ma ◽  
Pengfei Yu ◽  
...  
Keyword(s):  
High Pressure ◽  
High Pressures ◽  
High Pressure Torsion ◽  
Effective Means ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Depth Study ◽  
New Material ◽  
Diamond Anvil ◽  
Metal Materials

High-entropy alloys are a new type of material developed in recent years. It breaks the traditional alloy-design conventions and has many excellent properties. High-pressure treatment is an effective means to change the structures and properties of metal materials. The pressure can effectively vary the distance and interaction between molecules or atoms, so as to change the bonding mode, and form high-pressure phases. These new material states often have different structures and characteristics, compared to untreated metal materials. At present, high-pressure technology is an effective method to prepare alloys with unique properties, and there are many techniques that can achieve high pressures. The most commonly used methods include high-pressure torsion, large cavity presses and diamond-anvil-cell presses. The materials show many unique properties under high pressures which do not exist under normal conditions, providing a new approach for the in-depth study of materials. In this paper, high-pressure (HP) technologies applied to high-entropy alloys (HEAs) are reviewed, and some possible ways to develop good properties of HEAs using HP as fabrication are introduced. Moreover, the studies of HEAs under high pressures are summarized, in order to deepen the basic understanding of HEAs under high pressures, which provides the theoretical basis for the application of high-entropy alloys.

Sign in / Sign up

Export Citation Format

Share Document