Splitting Property Analysis of Automotive Con-Rod Steel C70S6

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.

• Periodical: Materials Science Forum (Volume 817)
• Pages: 498-503
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.817.498
• Online since: April 2015
• Authors: Xin Li Wen, Bo Jiang, Le Yu Zhou, Lie Chen, Hai Long Wang, Ya Zheng Liu*
• Keywords: Automotive Con-Rod Steel, C70S6, Cracks, EBSD, Step-Like Fracture

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