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 …

L12-Strengthened Cobalt-Base Superalloys

A Suzuki, H Inui, TM Pollock - Annual Review of Materials …, 2015 - annualreviews.org
The discovery of the γ′-Co3 (Al, W) phase with an L12 structure provided Co-base alloys
with a new strengthening mechanism, enabling a new class of high-temperature material …

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 …

Design and tailoring of alloys for additive manufacturing

TM Pollock, AJ Clarke, SS Babu - Metallurgical and Materials Transactions …, 2020 - Springer
Additive manufacturing (AM) promises a major transformation for manufacturing of metallic
components for aerospace, medical, nuclear, and energy applications. This perspective …

Machine learning assisted design of γ′-strengthened Co-base superalloys with multi-performance optimization

P Liu, H Huang, S Antonov, C Wen, D Xue… - npj Computational …, 2020 - nature.com
Designing a material with multiple desired properties is a great challenge, especially in a
complex material system. Here, we propose a material design strategy to simultaneously …

Precipitate shearing, fault energies, and solute segregation to planar faults in Ni-, CoNi-, and Co-base superalloys

YM Eggeler, KV Vamsi… - Annual Review of Materials …, 2021 - annualreviews.org
The mechanical properties of superalloys are strongly governed by the resistance to
shearing of ordered precipitates by dislocations. In the operating environments of …

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 …

Novel wrought γ/γ′ cobalt base superalloys with high strength and improved oxidation resistance

S Neumeier, LP Freund, M Göken - Scripta Materialia, 2015 - Elsevier
New polycrystalline Co-base superalloys with γ/γ′ microstructure have been developed,
which show excellent mechanical properties and enhanced oxidation behavior. The γ …

High resolution energy dispersive spectroscopy mapping of planar defects in L12-containing Co-base superalloys

MS Titus, A Mottura, GB Viswanathan, A Suzuki… - Acta Materialia, 2015 - Elsevier
Local chemical fluctuations in the vicinity of superlattice intrinsic stacking faults (SISFs) have
been observed via high resolution energy dispersive X-ray spectroscopy (EDS) mapping in …