Investigation on Mechanism of Microstructure Evolution during Multi-Process Hot Forming of GH4169 Superalloy Forging

• Published in: Materials Vol. 17; no. 7; p. 1697
• Main Authors: Chen, Ming-Song, Cai, Hong-Wei, Lin, Yong-Cheng, Wang, Guan-Qiang, Li, Hong-Bin, Liu, An, Li, Ze-Hao, Peng, Shan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 07.04.2024
• Subjects: Aging; Alloys; Annealing; Deformation; Dynamic recrystallization; Evolution; Forging; Forgings; Grain boundaries; Grain size; Heat treatment; High temperature; Hot forming; Hot working; Microstructure; Misalignment; Nickel alloys; Nickel base alloys; Nucleation; Predeformation; Scanning electron microscopy; Strain distribution; Superalloys; Temperature; United States > US; GH4169 superalloy; δ phase; dynamic recrystallization nucleation; multi-process hot forming

Typically, in the manufacturing of GH4169 superalloy forgings, the multi-process hot forming that consists of pre-deformation, heat treatment and final deformation is required. This study focuses on the microstructural evolution throughout hot working processes. Considering that δ phase can promote...