The effect of laser transformation notching on the controlled fracture of a high carbon (C70S6) steel

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• 作者：Deen Zhang ; S.J. Harris ; D.G. McCartney ; I.R. Pashby ; J. Powell ; P.H. Shipway ; K.T. Voisey
• 关键词：Fracture splitting ; Laser processing ; Laser induced phase transformation ; Instrumented Charpy impact testing
• 刊名：Materials Science and Engineering: A
• 出版年：2008
• 出版时间：20 August 2008
• 年：2008
• 卷：489
• 期：1-2
• 页码：273-284
• 全文大小：2702 K

文摘

A high carbon (C70S6) steel has been laser surface treated using CO₂ and diode lasers in order to produce an embrittled region which can act as a fracture notch. Such a process has been investigated as a precursor to the fracture splitting of automotive engine connecting rods. Microstructures of the treated regions have been examined and the fracture behaviour of notched samples has been quantified.