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Article
Influence of Dynamic Precipitation of γ′ Phase on Dynamic Strain Aging in a Fe-Ni-Based Superalloy
Discontinuous plastic flow due to dynamic strain aging (DSA) in a Fe-Ni-based superalloy was investigated by tensile tests in the temperature range from 500 ºC to 800 ºC with different γ′ fraction. Type A serr...
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Article
Tensile Properties and Deformation Mechanisms of Ni–Co–W Based Superalloy with High γ′ Content
The tensile properties and deformation mechanism of a new Ni–Co–W based wrought superalloy at 400–1000 °C were investigated. The results showed that the yield strength below 800 °C is essentially unchanged but...
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Article
Thermal Stability of GH4065A Superalloy Based on Microstructural and Performance Evolution Following Long-Term Aging
This study investigates the thermal stability of a GH4065A superalloy at intermediate temperatures by conducting long-term aging treatments for 100–6000 h at 700–800 °C. Secondary γ′-phase coarsening and inter...
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Article
On Synergistic Effects of Hierarchical γ′ Precipitates and Discontinuous Plastic Flow in a Ni-based Single Crystal Superalloy with an [001] Orientation
A discontinuous plastic flow is detected in a single-crystal superalloy with an [001] orientation during tensile tests over a wide temperature range. Results reveals that the synergistic impact of normal γ′ pr...
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Article
Fatigue crack growth characteristics of a new Ni–Co-base superalloy TMW-4M3: effects of temperature and load ratio
The fatigue crack growth (FCG) behavior of a newly developed Ni–Co-base superalloy TMW-4M3 has been investigated in this study. Experiment was carried out in laboratory air with compact-tension specimen. The e...