Formation mechanism of abnormally large grains in the Ni-based GH4141 superalloy during heat treatment

Key Points

• Abnormally large grains were formed during the heat treatment process, impacting the material's performance.
• Grain growth measurements indicated that larger grain sizes lead to altered mechanical properties and behavior.
• Analysis conducted through various heat treatment cycles assessed the microstructure of the Ni-based superalloy GH4141.
• Understanding these mechanisms highlights the potential for optimizing superalloy processing conditions.