Lattice distortion releasing local surface strain on high-entropy alloys

Nano Research ◽  
2021 ◽  
Author(s):  
Christian M. Clausen ◽  
Jack K. Pedersen ◽  
Thomas A. A. Batchelor ◽  
Jan Rossmeisl
Keyword(s):  
Lattice Distortion ◽  
Surface Strain ◽  
High Entropy Alloys ◽  
Local Surface ◽  
High Entropy

Local Lattice Distortion and Chemical Short Range Order in High Entropy Alloys

2020 ◽  
Author(s):  
Yuan-Yuan Tan ◽  
Ming-Yao Su ◽  
Zhou-Can Xie ◽  
Zhong-Jun Chen ◽  
Yu Gong ◽  
...  
Keyword(s):  
Short Range ◽  
Short Range Order ◽  
Lattice Distortion ◽  
Range Order ◽  
High Entropy Alloys ◽  
Local Lattice Distortion ◽  
High Entropy ◽  
Local Lattice

Lattice distortion as an estimator of solid solution strengthening in high-entropy alloys

2021 ◽  
pp. 110877
Author(s):  
Ankit Roy ◽  
Praveen Sreeramagiri ◽  
Tomas Babuska ◽  
Brandon Krick ◽  
Pratik K. Ray ◽  
...  
Keyword(s):  
Solid Solution ◽  
Lattice Distortion ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Solid Solution Strengthening ◽  
Solution Strengthening

Lattice distortion effect on elastic anisotropy of high entropy alloys

2020 ◽  
Vol 818 ◽  
pp. 152876 ◽  
Author(s):  
Chao-Chun Yen ◽  
Guan-Rong Huang ◽  
Yun-Cheng Tan ◽  
Han-Wen Yeh ◽  
Da-Ji Luo ◽  
...  
Keyword(s):  
Lattice Distortion ◽  
Elastic Anisotropy ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Distortion Effect

A Review of Ab Initio Calculation on Lattice Distortion in High-Entropy Alloys

JOM ◽  
2019 ◽  
Vol 71 (11) ◽  
pp. 4225-4237 ◽  
Author(s):  
Huijuan Ge ◽  
Fuyang Tian
Keyword(s):  
Ab Initio ◽  
Ab Initio Calculation ◽  
Lattice Distortion ◽  
High Entropy Alloys ◽  
High Entropy

Effect of lattice distortion on the diffusion behavior of high-entropy alloys

2020 ◽  
Vol 825 ◽  
pp. 154099
Author(s):  
Ruixin Wang ◽  
Yu Tang ◽  
Shun Li ◽  
Yuanlin Ai ◽  
Yongyan Li ◽  
...  
Keyword(s):  
Lattice Distortion ◽  
High Entropy Alloys ◽  
Diffusion Behavior ◽  
High Entropy

scholarly journals Evolution of local lattice distortion under irradiation in medium- and high-entropy alloys

Materialia ◽  
2018 ◽  
Vol 2 ◽  
pp. 73-81 ◽  
Author(s):  
Y. Tong ◽  
G. Velisa ◽  
S. Zhao ◽  
W. Guo ◽  
T. Yang ◽  
...  
Keyword(s):  
Lattice Distortion ◽  
High Entropy Alloys ◽  
Local Lattice Distortion ◽  
High Entropy ◽  
Local Lattice

scholarly journals Coupled Strengthening Effects by Lattice Distortion, Local Chemical Ordering, and Nanoprecipitates in Medium-Entropy Alloys

2021 ◽  
Vol 8 ◽  
Author(s):  
Wenqiang Cheng ◽  
Fuping Yuan ◽  
Xiaolei Wu
Keyword(s):  
Mechanical Properties ◽  
Large Scale ◽  
Lattice Distortion ◽  
Dislocation Line ◽  
High Entropy Alloys ◽  
Strengthening Effect ◽  
Sliding Velocity ◽  
High Entropy ◽  
Chemical Ordering ◽  
Dynamics Simulations

Extraordinary mechanical properties can be achieved in high-entropy alloys (HEAs) or medium-entropy alloys (MEAs) with nanoprecipitates. In the present study, the extra coupled strengthening effects by lattice distortion, local chemical ordering, and nanoprecipitates in the HEAs and MEAs with nanoprecipitates have been systematically investigated by large-scale molecular dynamics simulations. The moving of the dislocation can be slowed down, and the dislocation line shows a wavy configuration due to lattice distortion and local chemical ordering, resulting in strengthening. The degree of the wavy configuration increases and the sliding velocity of the dislocation decreases with increasing degrees of local chemical ordering. It is clearly indicated that the dislocation moves via nanoscale segment detrapping mechanism due to the effects of lattice distortion and local chemical ordering, resulting in roughened dislocation pathways for strengthening. The activated nanoscale segments are observed to be easier to detrap from the regions with stronger Co-Cr local chemical ordering and then propagate into the regions without such chemical ordering. These moving characteristics of the dislocation can delay the unpinning process from nanoprecipitates; thus, extra coupled strengthening effect has been revealed in the HEAs and MEAs with nanoprecipitates compared to pure Orowan’s strengthening.

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