scholarly journals Lattice-Distortion-Enhanced Yield Strength in a Refractory High-Entropy Alloy

2020 ◽  
Author(s):  
Chanho Lee ◽  
Yi Chou ◽  
George Kim ◽  
Michael C. Gao ◽  
Ke An ◽  
...  
Keyword(s):  
Yield Strength ◽  
Lattice Distortion ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Enhanced Yield

scholarly journals Lattice‐Distortion‐Enhanced Yield Strength in a Refractory High‐Entropy Alloy

2020 ◽  
Vol 32 (49) ◽  
pp. 2004029 ◽  
Author(s):  
Chanho Lee ◽  
Yi Chou ◽  
George Kim ◽  
Michael C. Gao ◽  
Ke An ◽  
...  
Keyword(s):  
Yield Strength ◽  
Lattice Distortion ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Enhanced Yield

A novel Fe-Co-Ni-Si high entropy alloy with high yield strength, saturated magnetization and Curie temperature

2020 ◽  
Vol 281 ◽  
pp. 128653
Author(s):  
Chen Chen ◽  
Yanzhou Fan ◽  
Hang Zhang ◽  
Jialiang Hou ◽  
Weiwei Zhang ◽  
...  
Keyword(s):  
Yield Strength ◽  
Curie Temperature ◽  
High Yield ◽  
High Entropy Alloy ◽  
High Yield Strength ◽  
High Entropy

Lattice distortion and atomic ordering of the sigma precipitates in CoCrFeNiMo high-entropy alloy

2021 ◽  
Vol 851 ◽  
pp. 156909
Author(s):  
Sheng-Yun Su ◽  
Yi-Ting Fan ◽  
Yan-Jie Su ◽  
Chun-Wei Huang ◽  
Ming-Hung Tsai ◽  
...  
Keyword(s):  
Lattice Distortion ◽  
High Entropy Alloy ◽  
Atomic Ordering ◽  
High Entropy

Large relrod extension induced by lattice distortion in high entropy alloy

2019 ◽  
Vol 6 (6) ◽  
pp. 066558
Author(s):  
Weitao Cao ◽  
Mingjie Zheng ◽  
Wenyi Ding ◽  
Xiaodong Mao ◽  
Chao Wang ◽  
...  
Keyword(s):  
Lattice Distortion ◽  
High Entropy Alloy ◽  
High Entropy

Microstructure and Mechanical Properties of Equitomic CoCrFeCuNi High Entropy Alloy

2018 ◽  
Vol 765 ◽  
pp. 149-154 ◽  
Author(s):  
Seung Min Oh ◽  
Sun Ig Hong
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Cold Rolling ◽  
Cast Alloy ◽  
Cold Work ◽  
High Entropy Alloy ◽  
Second Phase ◽  
Rich Phase ◽  
High Entropy ◽  
Microstructure And Mechanical Properties

Microstructure and mechanical properties of cast and cold-rolled equitomic CoCrFeCuNi alloy in which Mn was substituted by Cu from Cantor alloy was studied. The separation into two solid solutions (Cr-Co-Fe rich and Cu-rich phases) were observed in CoCrFeCuNi. Coarsening and widening of interdendritic Cu-rich phase after homogenization was observed after homogenization, suggesting Cu-rich phase is thermodynamically stable. The compressive stress-strain curves of homogenized cast CoCrFeCuNi alloy exhibited the reasonably high strength and excellent deformability for the cast alloy. The yield strength increased up to 960MPa after cold rolling from 265MPa of the homogenized cast alloy. The significant increase of yield strength is thought to be associated with the alignment of Cu-rich second phase in addition to cold work dislocation storage after cold rolling.

scholarly journals Solid solution hardening in CrMnFeCoNi-based high entropy alloy systems studied by a combinatorial approach

2021 ◽  
Author(s):  
Tom Keil ◽  
Daniel Utt ◽  
Enrico Bruder ◽  
Alexander Stukowski ◽  
Karsten Albe ◽  
...  
Keyword(s):  
Solid Solution ◽  
Yield Strength ◽  
Strain Hardening ◽  
Solid Solution Hardening ◽  
High Entropy Alloy ◽  
Solution Hardening ◽  
Local Composition ◽  
High Entropy ◽  
Dependent Strain ◽  
Local Shear

Abstract Solid solution hardening in high entropy alloys was studied for the Cantor alloy using diffusion couples and nanoindentation. We study a continuous variation of the alloying content and directly correlate the nanoindentation hardness to the local composition up to the phase boundary. The composition dependent hardness is analysed using the Labusch model and the more recent Varvenne model. The Labusch model has been fitted to experimental data and confirms Cr as the most potent strengthening element. For comparison of the experimental hardness and the predicted yield strength of the Varvenne model, a concentration-dependent strain-hardening factor is introduced to account for strain hardening during indentation, which leads to a very good agreement between experiment and model. A study of the input parameters of the Varvenne model, performed by atomistic computer simulations, shows no significant effect of fluctuations in the atomic size misfit volumes or in the local shear modulus to the computed yield strength. Graphic Abstract

Spinodal-modulated solid solution delivers a strong and ductile refractory high-entropy alloy

2021 ◽  
Author(s):  
Zibing An ◽  
Shengcheng Mao ◽  
Tao Yang ◽  
Chain Tsuan Liu ◽  
Bin Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Yield Strength ◽  
Lattice Strain ◽  
Tensile Elongation ◽  
High Yield ◽  
High Entropy Alloy ◽  
High Yield Strength ◽  
High Entropy ◽  
Elongation To Failure

A combination of high yield strength (1.1 GPa) and large tensile elongation to failure (28%) is achieved in a HfNbTiV refractory high-entropy alloy by creating modulated nanoscale inhomogeneity in both composition and lattice strain.

scholarly journals Enhanced tensile yield strength in laser additively manufactured Al0.3CoCrFeNi high entropy alloy

Materialia ◽  
2020 ◽  
Vol 9 ◽  
pp. 100522 ◽  
Author(s):  
Mohan Sai Kiran Kumar Yadav Nartu ◽  
Talukder Alam ◽  
Sriswaroop Dasari ◽  
Srinivas Aditya Mantri ◽  
Stephane Gorsse ◽  
...  
Keyword(s):  
Yield Strength ◽  
Tensile Yield Strength ◽  
High Entropy Alloy ◽  
High Entropy
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