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| Petrov, R. H. | Madrid |
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| Kočí, Jan | Prague |
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Lopez-Galilea, Inmaculada
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Topics
Publications (13/13 displayed)
- 2024Effect of Rejuvenation Treatment on SX Ni-Based Superalloys Subjected to Low Cycle Fatiguecitations
- 2024Effect of Rejuvenation Treatment on SX Ni-Based Superalloys Subjected to Low Cycle Fatigue
- 2023On the Impact of an Integrated HIP Treatment on the Very High Cycle Fatigue Life of Ni-Based SX Superalloyscitations
- 2023High temperature microstructure stability of Waspaloy produced by Wire Arc Additive Manufacturingcitations
- 2023Refinement and Experimental Validation of a Vacancy Model of Pore Annihilation in Single‐Crystal Nickel‐Base Superalloys during Hot Isostatic Pressing
- 2022Integration of Hot Isostatic Pressing and Heat Treatment for Advanced Modified γ-TiAl TNM Alloyscitations
- 2022Very high cycle fatigue durability of an additively manufactured single-crystal Ni-based superalloycitations
- 2019Additive manufacturing of CMSX-4 Ni-base superalloy by selective laser meltingcitations
- 2019Effect of heat treatment on the high temperature fatigue life of single crystalline nickel base superalloy additively manufactured by means of selective electron beam meltingcitations
- 2018Effect of porosity and eutectics on the high-temperature low-cycle fatigue performance of a nickel-base single-crystal superalloy
- 2016On the Effect of Hot Isostatic Pressing on the Creep Life of a Single Crystal Superalloys citations
- 2015Microsegregation and precipitates of an as-cast Co-based superalloycitations
- 2012Microsegregation and secondary phase formation during directional solidification of the single-crystal Ni-based superalloy LEK94citations
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document
Effect of porosity and eutectics on the high-temperature low-cycle fatigue performance of a nickel-base single-crystal superalloy
Abstract
This work investigates the separate influence of porosity and γ/γ′-eutectics on the low-cycle fatigue life of a single-crystal Ni-base superalloy at high temperatures. A conventional vacuum furnace heat-treatment but also integrated heat-treatments in a hot isostatic press are applied to produce different material variants of the same alloy. High-resolution electron microscopy revealed that both pores and γ/γ′-eutectics act as crack starters, thus initiating early failure. Moreover, the results indicate that remaining γ/γ′-eutectics can weaken the fatigue resistance even more than pores. Furthermore, the results confirm the beneficial effect of proper integrated hot isostatic pressing heat-treatments on the fatigue performance.