Bibliographic Details
| Title: |
Microstructure evolution in GH4742 superalloy by combining hot deformation and heat treatment |
| Authors: |
Wenwen Zhang, Xingang Liu, Qiang Du, Ying Guo, Heyong Qin, Qiang Tian, Mengying Zhu |
| Source: |
Journal of Materials Research and Technology, Vol 23, Iss , Pp 13-35 (2023) |
| Publisher Information: |
Elsevier, 2023. |
| Publication Year: |
2023 |
| Collection: |
LCC:Mining engineering. Metallurgy |
| Subject Terms: |
GH4742 superalloy, Sub-solvus heat treatment, Super-solvus heat treatment, γ′ precipitates, Dynamic recrystallization, γ+γ′ duplex structures, Mining engineering. Metallurgy, TN1-997 |
| More Details: |
The microstructure evolution of GH4742 superalloy under the coupling action of hot deformation and heat treatment was studied by isothermal compression and then solvus heat treatment (SHT), with particular attention focused on the interaction mechanism between γ′ precipitates and dynamic recrystallization (DRX) grains. The deformation of material below the γ′ solvus temperature (1020–1050 °C) by DRX was retarded because of the strong pinning effect of γ′ precipitates. At a strain of 0.6 and all strain rates (0.01–1 s−1), a necklace-like microstructure formed with fine DRXed grains (∼2 μm) and a small DRXed fraction ( |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2238-7854 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S2238785422020841; https://doaj.org/toc/2238-7854 |
| DOI: |
10.1016/j.jmrt.2022.12.194 |
| Access URL: |
https://doaj.org/article/f30102b9d92e45589d8891fba295472b |
| Accession Number: |
edsdoj.f30102b9d92e45589d8891fba295472b |
| Database: |
Directory of Open Access Journals |
