Results 1 to 10 of about 3,348 (148)

Effect of Mo on microstructural stability of a 4th generation Ni-based single crystal superalloy

open access: yesJournal of Materials Research and Technology, 2022
The microstructural stability during thermal exposure at 900 °C of Ni-based single crystal superalloys with various Mo content was investigated. The coarsening of γ′ precipitates and formation of TCP (topologically close-packed) phases were discussed in ...
Yuan Cheng   +8 more
doaj   +1 more source

Influence of Strain Amplitude on Low-Cycle Fatigue Behaviors of a Fourth-Generation Ni-Based Single-Crystal Superalloy at 980 °C

open access: yesCrystals, 2023
Total strain-control, low-cycle fatigue experiments of a fourth-generation Ni-based single-crystal superalloy were performed at 980 °C. Scanning electron microscopy and transmission electron microscopy are employed to determine fracture morphologies and ...
Pengfei Wang   +8 more
doaj   +1 more source

On Grain Boundary Engineering for a 316L Austenitic Stainless Steel

open access: yesMetals, 2022
The change in the grain boundary network during recrystallization and grain growth was studied in a 316L austenitic stainless steel subjected to 5% cold rolling reduction. The primary recrystallization rapidly developed upon heating to 1000 °C, resulting
Pavel Dolzhenko   +4 more
doaj   +1 more source

Effects of Cobalt on solidification characteristics and as-cast microstructure of an advanced nickel-based single crystal superalloys

open access: yesJournal of Materials Research and Technology, 2022
Containing Re and Ru, an advanced Ni-based single crystal superalloys with different cobalt (Co) content (5.9 wt.%, 9.0 wt.% and 12.0 wt.%, respectively) were investigated to study the effects of Co on solidification characteristics and as-cast ...
Qinghai Pan   +6 more
doaj   +1 more source

Crack Initiation in Ni-Based Single Crystal Superalloy under Low-Cycle Fatigue-Oxidation Conditions

open access: yesMetals, 2023
The mechanism of oxidation-assisted initiation of surface cracks of a fourth-generation Ni-based single crystal superalloy was systematically investigated during low cycle fatigue at 900 °C and 980 °C.
Pengfei Wang   +7 more
doaj   +1 more source

On the Strength of a 316L-Type Austenitic Stainless Steel Produced by Selective Laser Melting

open access: yesMetals, 2023
The developed microstructure and the tensile behavior of a 316L-type steel produced by selective laser melting were studied. This paper particularly aims to clarify the dislocation substructures in the developed steel, focusing on the density of ...
Marina Odnobokova   +5 more
doaj   +1 more source

Microstructural Evolution and Stability of Coarse-Grained S31254 Super Austenitic Stainless Steel during Hot Deformation

open access: yesMetals, 2022
The ingot of S31254 super austenitic stainless steel (SASS) was annealed at 1220 °C for 70 h to eliminate the segregation of Mo element, and the grain size grows to the level of millimeter.
Jia Xing   +5 more
doaj   +1 more source

The effect of deformation temperature on recrystallization in a Ni-based single crystal superalloys

open access: yesMaterials & Design, 2022
A series of experiments have been carried out to investigate the effect of deformation temperature on the recrystallization of nickel-based single crystal superalloys using isothermal (compression) and non-isothermal (directional solidification ...
Wei Xiong   +8 more
doaj   +1 more source

Dynamically Recrystallized Microstructures, Textures, and Tensile Properties of a Hot Worked High-Mn Steel

open access: yesMetals, 2019
The deformation microstructures and mechanical properties were studied in a high-Mn steel subjected to hot compression. The deformation microstructures resulted from the development of dynamic recrystallization (DRX).
Pavel Dolzhenko   +3 more
doaj   +1 more source

The nucleation of δ phases triggered by the stacking faults in a single crystal superalloy

open access: yesMaterials Research Letters, 2023
Here we investigated the nucleation of the Re, Ru-rich δ phase affected by stacking faults in the γ phase in a 4th generation Ni-based single crystal superalloy during the service at 800°C.
Yuan Cheng   +7 more
doaj   +1 more source

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