Original scientific paper

Research on the dynamic recrystallization law of cross wedge rolling (CWR) asymmetric hollow shaft

S. H. Zheng ; Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, China; School of Mechanical Engineering, Ningbo University of Technology, Ningbo, China
X. D. Shu ; Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, China
J. Wei ; Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, China

Abstract

To improve mechanical properties of asymmetrical hollow shafts parts, the dynamic recrystallization of asymmetrical hollow shaft can be obtained by cross wedge rolling (CWR) technology. The Finite element model (FEM) is established using the DEFORM-3D software, the distribution of the dynamic recrystallization volume fraction is illustrated, and the law of average grain size distribution is analyzed. The microscopy results indicate that the grain size at the central area of cross-section is larger than that at lateral area, and the grain of the central part can be obviously refined, the whole microstructure homogeneity is improved, which have provided theoretical foundation for further improving the quality and mechanical properties of CWR asymmetrical hollow shafts parts.

Keywords

cross wedge rolling; asymmetric rolling; dynamic recrystallization; FEM; metalography

Hrčak ID:

189371

URI

https://hrcak.srce.hr/189371

Publication date:

1.1.2018.

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