Results 51 to 60 of about 16,800 (255)

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Challenges and underlying causes associated with the hot deformation of as-cast GH4975 superalloy

Journal of Materials Research and Technology
In this study, the challenges and underlying causes associated with the hot deformation of the as-cast GH4975 superalloy are analyzed in detail.
Yushuo Li, Yanwu Dong, Zhouhua Jiang, Hongxu Kuang, Fengxiang Zhang, Liang Li, He Xu   +6 more
doaj   +1 more source

Combined Process‐ and Phase‐Field‐Simulation to Predict the Microstructure of Single‐Crystal Ni‐Based Superalloys

Advanced Engineering Materials, EarlyView.
A combined finite element and phase‐field approach predicts the evolution of microstructure during the directional solidification of Ni‐based superalloys. The model reveals how withdrawal rate, temperature gradient, and wall thickness control the dendrite spacing, highlighting the strong effect of surface regions in thin sections where dendrite growth ...
Sean Böhm, André B. Baldissera, Rainer Völkl, Uwe Glatzel   +3 more
wiley   +1 more source

Microstructure Dependence of Dynamic Impact Behaviour of ATI 718plus® Superalloy

, 2018
ATI 718Plus® is a γ′-strengthened nickel-based superalloy developed to substitute the widely used Alloy 718 in aero-engine applications. This newer superalloy is a candidate material for aero-engine turbine structures, with the requirement to withstand ...
J. Andersson, Asala, G.,, Andersson, Joel,, Ojo, Olanrewaju,, O. A. Ojo, G. Asala   +5 more
core   +1 more source

Influences of Post-Heat Treatment on the Microstructure Evolution and Creep Properties of Ni-Based Superalloy IN718 Fabricated by Electron Beam Melting

Metals, 2022
In this study, the Ni-based superalloy IN718, fabricated using an electron beam melting process, was investigated in as-built and various heat-treated conditions.
Thaviti Naidu Palleda, Santhosh Banoth, Yen-Ling Kuo, Koji Kakehi   +3 more
doaj   +1 more source

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

Advanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa, Aparna Saksena, Alesander Kostka, Pascal Thome, Felicitas Scholz, Alexandre Mussi, Christoph Somsen, Baptiste Gault, Jan Frenzel, Gunther Eggeler   +9 more
wiley   +1 more source

Microstructural Analysis of Nickel Superalloy MAR-M247

, 2012
This paper presents the results of a microstructural phase analysis of the nickel superalloy MAR M247 after casting and different modes of dissolving annealing in the range of 900°C - 1240°C with cooling in water.
Karel Hrbacek, Petr Jonsta, Miriam Gabcova, Zdenek Jonsta, Katerina Konecna   +4 more
core   +1 more source

Research on high temperature erosion wear behavior of surface strengthened superalloy for underground coal gasification

Journal of Materials Science: Materials in Engineering
Superalloy is the only utilizable material for underground coal gasification channel joint. In this research, the high temperature gas flow erosion wear behavior of superalloy with strengthened layer by boronizing is systematically investigated ...
Xiangyi Ren, Gang Zhao, Jiakun Yang, Zhiyuan Li, Jianjun Wang, Lihong Han   +5 more
doaj   +1 more source

Hot Ductility Loss in a Fe-Ni-Based Superalloy

Metals, 2015
High temperature tensile tests have been conducted on samples of a Fe-Ni based superalloy, Incoloy A-286, and significant ductility loss has been observed at 1220 °C.
Chen-Wei Li, An-Chou Yeh, Chi-San Chen, Woei-Ren Wang   +3 more
doaj   +1 more source

Temperature evolution and grain defect formation during single crystal solidification of a blade cluster [PDF]

China Foundry, 2017
In order to investigate the asymmetry of thermal conditions during directional solidification, the temperature evolution and correspondingly developed undercooling in a simplified single crystal blade cluster were numerically simulated.
De-xin Ma, Fu Wang, Qiang Wu
doaj   +1 more source