Influence of yttrium on purification and carbide precipitation of superalloy K4169

S Cao, Y Yang, B Chen, K Liu, Y Ma, L Ding… - Journal of Materials …, 2021 - Elsevier
The effect of reactive element yttrium on purification and carbide precipitation of superalloy
K4169 has been studied through vacuum induction melting. The results show that yttrium …

[HTML][HTML] Ultra-high temperature creep of Ni-based SX superalloys at 1250 C

S Utada, L Despres, J Cormier - Metals, 2021 - mdpi.com
Very high temperature creep properties of twelve different Ni-based single crystal
superalloys have been investigated at 1250° C and under different initial applied stresses …

Revealing sulfur- and phosphorus-induced embrittlement and local structural phase transformation of superlattice intrinsic stacking faults in L12-Ni3Al

T Zhao, WY Wang, Y Zhao, P Li, Y Zhang… - Journal of Materials …, 2022 - Springer
In the present work, the effects of S and P atoms on the local phase transformation and
embrittlement mechanism of superlattice intrinsic stacking faults (SISF) in L12-Ni3Al are …

Temperature dependence of CaO desulfurization mechanism in molten Ni-base superalloy

Y Kishimoto, T Kono, T Horie, T Yokokawa… - … Materials Transactions B, 2021 - Springer
Desulfurization phenomenon of Ni-base superalloy using a solid CaO was identified by
adjusting the temperature of melt. Ni-base superalloy and NiS powder were heated together …

Desulfurization model using solid CaO in molten Ni-base superalloys containing Al

Y Kishimoto, S Utada, T Iguchi, Y Mori… - … Materials Transactions B, 2020 - Springer
Details of the desulfurization for molten Ni-base superalloys containing Al using solid CaO
have been investigated, and the formula that explains the reaction rate has been developed …

Study on the interface reaction mechanism between CaO-Y2O3 compound system and superalloy melt

S Fan, N Sheng, X Zhu, C Lin, S Sun, Z Chu… - Journal of Alloys and …, 2025 - Elsevier
The interfacial reaction between CaO-Y 2 O 3 system and superalloy melt was
systematically studied, and the relationship between reaction temperature and interfacial …

In-Situ Monitoring of Phase Transition and Microstructure Evolution in Ni-Based Superalloys by Electrical Resistivity: Direct Comparison With Differential Scanning …

S Utada, R Sasaki, RC Reed, YT Tang - Metallurgical and Materials …, 2023 - Springer
In this study, resistivity measurements are made during continuous heating and cooling on
four different Ni-based superalloys of different grain structures and with different phases (ie …

Unveiling the Mechanism of Improved Oxidation Resistance for CaO Crucible Melting Using Ni-Al Alloy

C Tabata, K Kawagishi, J Uzuhashi, T Ohkubo… - … Materials Transactions A, 2022 - Springer
Melting the ingot or alloy using a CaO crucible is a method known to substantially improve
the oxidation resistance of superalloys. But the mechanism is unclear due to the lack of …

Oxidation resistance improvement of Ni-base single-crystal superalloy melted in a CaO crucible

T Sugiyama, S Utada, T Yokokawa, M Osawa… - … Materials Transactions A, 2019 - Springer
An advanced Ni-base single-crystal superalloy, TMS-238, has the highest temperature
capability, but there is still potential to improve its high-temperature properties. In the present …

Effect of Revert Addition on the Nitrogen Removal From Liquid Superalloy During Vacuum Induction Melting Process: Experimental and Simulation Studies

P Zhao, J Gao, S Yang, W Liu, J Li, M Zhao - Metallurgical and Materials …, 2024 - Springer
Impurity and non-metallic inclusions control are imperative for the metallurgical quality of
superalloys. In this paper, the effect of revert addition on the nitrogen removal and inclusion …