[HTML][HTML] Alloys for application at ultra-high temperatures: Nb-silicide in situ composites: Challenges, breakthroughs and opportunities

P Tsakiropoulos - Progress in Materials Science, 2022 - Elsevier
The paper reflects on the development of Nb-silicide based alloys vis-à-vis property goals
and compares them with refractory-complex-concentrated-alloys (RCCAs) for their density …

Enhanced strength and ductility in a high-entropy alloy via ordered oxygen complexes

Z Lei, X Liu, Y Wu, H Wang, S Jiang, S Wang, X Hui… - Nature, 2018 - nature.com
Oxygen, one of the most abundant elements on Earth, often forms an undesired interstitial
impurity or ceramic phase (such as an oxide particle) in metallic materials. Even when it …

Mechanical behavior of high-entropy alloys: A review

Y Shang, J Brechtl, C Pistidda, PK Liaw - High-Entropy Materials: Theory …, 2021 - Springer
High-entropy alloys (HEAs) are materials that consist of equimolar or near-equimolar
multiple principal components but tend to form single phases, which is a new research topic …

Phase-field modeling of dislocation–interstitial interactions

LTW Fey, C Reynolds, A Hunter, IJ Beyerlein - Journal of the Mechanics …, 2023 - Elsevier
The mechanical behavior of body-centered cubic (BCC) materials can be dramatically
affected by the presence of interstitial solute atoms. We present a new phase-field …

Assessing the factors underlying the high yield strength of laser powder bed fusion processed niobium

A Chesetti, S Banerjee, KVM Krishna, V Soni… - Materials Science and …, 2024 - Elsevier
The present study focuses on the factors underlying the substantially higher yield strength
(YS) and ultimate tensile strength (UTS) in laser powder bed fusion (LPBF) processed …

Isothermal oxidation mechanism of Nb–Ti–V–Al–Zr alloy at 700–1200 C: Diffusion and interface reaction

J Zheng, X Hou, X Wang, Y Meng, X Zheng, L Zheng - Corrosion Science, 2015 - Elsevier
Isothermal oxidation kinetics of Nb–Ti–V–Al–Zr alloy at 700–1200° C followed a mixed
parabolic-linear law. The oxidation region consisted of an outer oxidation layer (OOL) and …

Fabrication and characterization of high-purity niobium using electron beam melting additive manufacturing technology

CA Terrazas, J Mireles, SM Gaytan, PA Morton… - … International Journal of …, 2016 - Springer
An advantage of electron beam melting (EBM) additive manufacturing technology is the
ability to process high-melting temperature, refractory, and/or reactive materials. This …

Niobium and other high temperature refractory metals for aerospace applications

VV Satya Prasad, RG Baligidad, AA Gokhale - Aerospace Materials and …, 2017 - Springer
Refractory metal alloys based on Nb, Mo, Ta, W, and Re find applications in the aerospace
industries because of their high melting points and high temperature strengths. They are …

Isothermal oxidation mechanism of a newly developed Nb–Ti–V–Cr–Al–W–Mo–Hf alloy at 800–1200 C

J Zheng, X Hou, X Wang, Y Meng, X Zheng… - International Journal of …, 2016 - Elsevier
Oxidation performance of a newly developed Nb–Ti–V–Cr–Al–W–Mo–Hf alloy at 800–1200°
C for 5 h in flowing air was investigated via isothermal oxidation testing, X-ray diffraction …

Designing solid solution hardening to retain uniform ductility while quadrupling yield strength

PJ Yang, QJ Li, WZ Han, J Li, E Ma - Acta Materialia, 2019 - Elsevier
Single-phase metals can be strengthened via cold work, grain refinement, or solid solution
hardening. But the yield strength elevation normally comes at the expense of ductility, ie, a …