Fundamental core effects in transition metal high-entropy alloys:“High-entropy” and “sluggish diffusion” effects

A Mehta, YH Sohn - Diffusion Foundations, 2021 - Trans Tech Publ
High entropy alloys (HEAs) are equimolar multi-principal-element alloys (MPEAs) that are
different from traditional solvent-based multicomponent alloys based on the concept of alloy …

Investigation of sluggish diffusion in FCC Al0.25CoCrFeNi high-entropy alloy

A Mehta, Y Sohn - Materials Research Letters, 2021 - Taylor & Francis
To validate the 'sluggish diffusion'in high-entropy alloys, interdiffusion coefficients of
individual elements and tracer diffusion coefficient of Ni were experimentally determined in …

Elimination of extraordinarily high cracking susceptibility of aluminum alloy fabricated by laser powder bed fusion

H Hyer, L Zhou, S Park, T Huynh, A Mehta… - Journal of Materials …, 2022 - Elsevier
Using the calculation of phase diagrams approach and Scheil solidification modeling, the Al-
2.5 Mg-1.0 Ni-0.4 Sc-0.1 Zr alloy was designed, intentionally with an extraordinarily high …

High-throughput development and applications of the compositional mechanical property map of the β titanium alloys

J Ling, D Huang, K Bai, W Li, Z Yu, W Chen - Journal of Materials Science & …, 2021 - Elsevier
By a combination of the nanoindentation and electron probe microanalysis (EPMA)
techniques, the traditional diffusion couple technique is extended to map the mechanical …

Microstructure characteristics of wire arc additive manufactured NiAl intermetallic compounds

Y Meng, J Li, M Gao, X Zeng - Journal of Manufacturing Processes, 2021 - Elsevier
An initial attempt had been made to fabricate Nisingle bondAl intermetallic compounds
(IMCs) by wire arc additive manufacturing (WAAM) in order to overcome the disadvantages …

Diffusion assessments for the Al–Cu–Ni system by diffusion triple experiment and two-dimensional diffusion simulation

YM Lu, CH Xia, XG Lu - Calphad, 2022 - Elsevier
In the present work, one diffusion triple for the Al–Cu–Ni ternary system was assembled and
heat-treated at 1373 K. Electron probe microanalysis (EPMA) was used to measure the …

[HTML][HTML] Impact of crystallography at Ni/NiAl interfaces on the nucleation of Ni3Al

M Seyring, M Rettenmayr - Acta Materialia, 2021 - Elsevier
Early stages of phase formation at (Ni)/NiAl interfaces with different crystallographic
configurations were studied. As opposed to earlier work, macroscopic diffusion couples and …

A MGI-oriented investigation of the Young's modulus and its application to the development of a novel Ti–Nb–Zr–Cr bio-alloy

J Ling, W Chen, Y Sheng, W Li, L Zhang… - Materials Science and …, 2020 - Elsevier
Young's modulus is essential for the design and production of the alloys. Thus, we proposed
a MGI (Materials Genome Initiative)-oriented strategy for the high-throughput development of …

Reactive elements dependence of elastic properties and stacking fault energies of γ-Ni, γ′-Ni3Al and β-NiAl

C Hu, Z Zhang, H Chen, J He, H Guo - Journal of Alloys and Compounds, 2020 - Elsevier
The reactive element effects (REEs) have been proven to improve the thermal oxidation
resistance of β-NiAl. However, their effects on mechanical properties, which are significant …

Microstructural evolution and element interdiffusion of NiAlHf and NiAlHfY coatings deposited on a Ni-based superalloy

X Li, J Zou, Q Shi, M Dai, H Yang, S Lin… - Surface and Coatings …, 2022 - Elsevier
Abstract The NiAlHf and NiAlHfY coatings were deposited on a nickel-based single crystal
superalloy using arc ion plating technology. The microstructural evolution and element …