Research on the Forging Penetration Efficiency of 40Cr Axial Forging by the Simulation of Dynamic Recrystallization

Abstract:

The property of Heavy axial forgings can be modified by the reasonable drawing process with the advantage of dynamic recrystallization. In view of formation, heat transfer, heating generation, dynamic recrystallization a macro-micro coupled process was modeled, and the drawing process of φ300 mm×4000 mm axial forging is simulated .It is found that when the cumulative reduction ratio reaches 9% in the second round, the dynamic recrystallization occurred in the material as it reached a critical strain condition .With the reduction ratio increases, the volume fraction of dynamic recrystallization increases. When the cumulative reduction ratio reaches 60%, about 67% of the inner region of the axial forging is modified fully. After the drawing process, the dynamic recrystallization grain size in 60% of the cross-section area is less than 100 μm , and the grains get refined.

• Periodical: Advanced Materials Research (Volumes 230-232)
• Pages: 315-319
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.230-232.315
• Online since: May 2011
• Authors: Ying Tong
• Keywords: Dynamic Recrystallization (DRX), Heavy Axial Forging, Reduction

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