Splitting Property Analysis of Automotive Con-Rod Steel C70S6

Author:

Wen Xin Li1,Jiang Bo1,Zhou Le Yu1,Chen Lie2,Wang Hai Long2,Liu Ya Zheng1

Affiliation:

1. University of Science and Technology Beijing

2. Xining Special Steel Co., Ltd

Abstract

In order to analysis the splitting property of automotive con-rod steel C70S6, a type of con-rods using this material were manufactured on a domestic production line. Both the fracture and the cracks of the con-rods were observed by SEM, the relationship between the cracks and the grain orientation were analyzed by EBSD. The results show that the fracture of the steel is cleavage fracture and most cleavage planes are {001} , the crack initiation is mainly ferrite or inclusions, and the crack propagation race is along the {001} planes, most microcracks in the vicinity of the main crack induced by the notch can coalesce with it and change its propagation direction, this is the probable formation mechanism of the step-like fracture.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference8 articles.

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2. Q. Wang, F. He: Mater Process Technol, Vol. 151(2004), pp.192-195.

3. M.M. Wang, Y.P. Zeng, X.S. Wang, X.S. Xie, H.M. Fan: Joumal of Iron and Steel Research, Vol. 20(2008), pp.46-49.

4. H.M. Fan, Y.P. Zeng, X.S. Wang, X.S. Xie: Journal of Aeronautical Materials, Vol. 27(2007), pp.6-9.

5. D. Spriestersbach, P. Grad, E. Kerscher: International Journal of Fatigue, Vol. 64(2014), pp.114-120.

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