| People | Locations | Statistics |
|---|---|---|
| Naji, M. |
| |
| Motta, Antonella |
| |
| Aletan, Dirar |
| |
| Mohamed, Tarek |
| |
| Ertürk, Emre |
| |
| Taccardi, Nicola |
| |
| Kononenko, Denys |
| |
| Petrov, R. H. | Madrid |
|
| Alshaaer, Mazen | Brussels |
|
| Bih, L. |
| |
| Casati, R. |
| |
| Muller, Hermance |
| |
| Kočí, Jan | Prague |
|
| Šuljagić, Marija |
| |
| Kalteremidou, Kalliopi-Artemi | Brussels |
|
| Azam, Siraj |
| |
| Ospanova, Alyiya |
| |
| Blanpain, Bart |
| |
| Ali, M. A. |
| |
| Popa, V. |
| |
| Rančić, M. |
| |
| Ollier, Nadège |
| |
| Azevedo, Nuno Monteiro |
| |
| Landes, Michael |
| |
| Rignanese, Gian-Marco |
|
Sommadossi, Silvana
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2023Phase transformation kinetics in a coarse-grain Ti17 alloy determined by laser ultrasonics and dilatometrycitations
- 2021TEM and Synchrotron X-ray Study of the Evolution of Phases Formed During Bonding of IN718/Al/IN718 Couples by TLPBcitations
- 2021TEM and Synchrotron X-ray Study of the Evolution of Phases Formed During Bonding of IN718/Al/IN718 Couples by TLPBcitations
- 2021Microstructure Evolution and Phase Identification in Ni-Based Superalloy Bonded by Transient Liquid Phase Bondingcitations
- 2021Hot deformation behavior of a ni‐based superalloy with suppressed precipitationcitations
- 2020Analysis of Splitting and Martensitic Transformation of AlNi Intermetallic Obtained by Transient Liquid Phase Bondingcitations
Places of action
| Organizations | Location | People |
|---|
article
Hot deformation behavior of a ni‐based superalloy with suppressed precipitation
Abstract
<p>Inconel® 718 is a well‐known nickel‐based super‐alloy used for high‐temperature applications after thermomechanical processes followed by heat treatments. This work describes the evolution of the microstructure and the stresses during hot deformation of a prototype alloy named IN718WP produced by powder metallurgy with similar chemical composition to the matrix of In-conel® 718. Compression tests were performed by the thermomechanical simulator Gleeble® 3800 in a temperature range from 900 to 1025 °C, and strain rates scaled from 0.001 to 10 s<sup>−1</sup>. Flow curves of IN718WP showed similar features to those of Inconel® 718. The relative stress softening of the IN718WP was comparable to standard alloy Inconel® 718 for the highest strain rates. Large stress softening at low strain rates may be related to two phenomena: the fast recrystallization rate, and the coarsening of micropores driven by diffusion. Dynamic recrystallization grade and grain size were quantified using metallography. The recrystallization grade increased as the strain rate de-creased, although showed less dependency on the temperature. Dynamic recrystallization occurred after the formation of deformation bands at strain rates above 0.1 s<sup>−1</sup> and after the formation of subgrains when deforming at low strain rates. Recrystallized grains had a large number of sigma 3 boundaries, and their percentage increased with strain rate and temperature. The calculated appar-ent activation energy and strain rate exponent value were similar to those found for Inconel® 718 when deforming above the solvus temperature.</p>