Sustainability through alloy design: Challenges and opportunities

JL Cann, A De Luca, DC Dunand, D Dye… - Progress in Materials …, 2021 - Elsevier
Exciting metallurgical breakthroughs of the last decades alongside the development and
wide-ranging availability of new and more capable experimental and theoretical tools for …

[HTML][HTML] Exploring the Impact of Configurational Entropy on the Design and Development of CoNi-Based Superalloys for Sustainable Applications

A Mohammadzadeh, A Heidarzadeh, H Becker… - Journal of Alloys and …, 2023 - Elsevier
A comprehensive literature review on recently rediscovered Co-and/or CoNi-based
superalloys, strengthened by the γ'phase, revealed a relationship between the …

L12-strengthened multicomponent Co-Al-Nb-based alloys with high strength and matrix-confined stacking-fault-mediated plasticity

BX Cao, WW Xu, CY Yu, SW Wu, HJ Kong, ZY Ding… - Acta Materialia, 2022 - Elsevier
This study presents the alloy development of a new class of L1 2-strengthened Co-Al-Nb-
based alloys with high γ′-solvus temperatures together with superb strengths at both …

A novel L12-strengthened multicomponent Co-rich high-entropy alloy with both high γ′-solvus temperature and superior high-temperature strength

BX Cao, HJ Kong, ZY Ding, SW Wu, JH Luan, ZB Jiao… - Scripta Materialia, 2021 - Elsevier
A L1 2-strengthened multicomponent Co-rich high-entropy alloy with superior
microstructural stability was developed in this study. High-density cuboidal γ′ particles …

On the faulting and twinning mediated strengthening and plasticity in a γʹ strengthened CoNi-based superalloy at room temperature

P Pandey, M Heczko, N Khatavkar, N Mazumder… - Acta Materialia, 2023 - Elsevier
Microscopic defects and their mutual interactions are fundamentally important in deciding
the load carrying capacity of structural materials. In this context, the present work reports an …

A new class of high strength high temperature Cobalt based γ–γ′ Co–Mo–Al alloys stabilized with Ta addition

SK Makineni, A Samanta, T Rojhirunsakool, T Alam… - Acta Materialia, 2015 - Elsevier
The present paper reports a new class of Co based superalloys that has γ–γ′
microstructure and exhibits much lower density compared to other commercially available …

On the high temperature coarsening kinetics of γ′ precipitates in a high strength Co37. 6Ni35. 4Al9. 9Mo4. 9Cr5. 9Ta2. 8Ti3. 5 fcc-based high entropy alloy

P Pandey, S Kashyap, D Palanisamy, A Sharma… - Acta Materialia, 2019 - Elsevier
The paper reports evolution of two-phase microstructure quantitatively in a high entropy
alloy of composition Co 37.6 Ni 35.4 Al 9.9 Mo 4.9 Cr 5.9 Ta 2.8 Ti 3.5. A very high-volume …

High-strength Co–Al–V-base superalloys strengthened by γ′-Co3 (Al, V) with high solvus temperature

Y Chen, C Wang, J Ruan, T Omori, R Kainuma… - Acta Materialia, 2019 - Elsevier
The γ/γ′ two-phase Co–Al–V-base superalloys are investigated in detail, including their
phase equilibria, alloying effects, and alloy design. The experimental proof of the existence …

On the diffusive phase transformation mechanism assisted by extended dislocations during creep of a single crystal CoNi-based superalloy

SK Makineni, A Kumar, M Lenz, P Kontis, T Meiners… - Acta Materialia, 2018 - Elsevier
We propose here a deformation-induced diffusive phase transformation mechanism
occurring during shearing of γ′ ordered phase in a γ/γ′ single crystalline CoNi-based …

Development of low-density γ/γ′ Co–Al–Ta-based superalloys with high solvus temperature

Y Chen, C Wang, J Ruan, S Yang, T Omori, R Kainuma… - Acta Materialia, 2020 - Elsevier
The present paper reports the development of W-, Mo-, and V-free and Ni-and Cr-containing
Co–Al–Ta-based superalloys. In particular, the presence of a metastable L1 2-γ′ phase is …