Abstract
This paper presented a double-open multidirectional forging with relatively few deformation passes and a uniform deformation. The constitutive equation and dynamic recrystallization model of the GH4169 superalloy were identified based on a thermal compression test and imported into Deform simulation software. The microstructure evolution law of GH4169 superalloy undergoing double-open multidirectional forging was simulated. The evolution of the recrystallization volume fraction and recrystallized grain size of the GH4169 superalloy during double-open multidirectional forging was obtained. Both higher temperatures and more passes were found to produce more complete recrystallization and smaller recrystallization grain size. At the maximum temperature studied, 1000 °C, with nine passes, the recrystallization volume fraction exceeded 95%, and the recrystallized grain size reached 3–5.5 µm.
Highlights
GH4169 alloy is a nickel-based superalloy that is extensively used in a steam turbine, aerospace, chemical, and nuclear industries [1,2,3]
The multi-directional forging process can improve the microstructure of the material and obtain fine-grained microstructure materials with excellent mechanical properties and uniform properties. This process is suitable for the regulation of the structure and properties of GH4169 alloy materials
Systematically studied the microstructure evolution and mechanical properties of 6000 series aluminum alloys subjected to multi-directional forging and artificial aging treatment
Summary
GH4169 alloy is a nickel-based superalloy that is extensively used in a steam turbine, aerospace, chemical, and nuclear industries [1,2,3]. Systematically studied the microstructure evolution and mechanical properties of 6000 series aluminum alloys subjected to multi-directional forging and artificial aging treatment. Aoba et al [10]few systematically studied microstructure and mechanical properties of 6000 and seriesdynamic aluminumrecrystallization alloys subjected model uniform the deformation wasevolution generated. A double-open multidirectional forging withthe relatively few deformation and volume uniform fractiondeformation and grainwas size as functions of temperature during the microstructure evolution generated. Materials and Methods fraction and grain size as functions of temperature during the microstructure evolution simulation of superalloy discussed. Each was test immediately water-cooled the0.1, end of the for 2(0.001, min, the0.01, sample subjected a hotsample compression at different strain rates Each sample was immediately water-cooled at the end of the experiment [12,13,14]
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