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Causes of surface stripe cracks of Ti–4Al–2V alloy cold-rolled sheet

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Abstract

The stripe cracks which formed along rolling direction on the surface of Ti–4Al–2V alloy cold-rolled sheet were observed by stereoscope, scanning electron microscope (SEM), and energy-dispersive spectrometer (EDS). Morphology analysis indicates that cracks are dominantly in zigzag shape, with 10–30 mm in length and less than 10 μm in depth, and there is no evidence of crack tips. Chemical composition analysis shows that crack regions feather high oxygen concentration while smooth surface is at normal oxygen level. It is obvious that the occurrence of strip cracks is mainly related to residual oxide on the surface of Ti–4Al–2V alloy cold-rolled sheet.

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Acknowledgments

This study was financially supported by the Sichuan Provincial Key Technology R&D Program (No. 2013GZX0136).

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Authors and Affiliations

  1. Pangang Group Research Institute Co., Ltd., State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua, 617000, China

    De-Ming Huang, Xiong-Fei Yang, Qing-Feng Wei, Yong Chen, Hua Guo, Sheng-Long Liang & Ying Wang

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  1. De-Ming Huang
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Correspondence to De-Ming Huang.

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Huang, DM., Yang, XF., Wei, QF. et al. Causes of surface stripe cracks of Ti–4Al–2V alloy cold-rolled sheet. Rare Met. 33, 522–526 (2014). https://doi.org/10.1007/s12598-013-0132-z

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  • DOI: https://doi.org/10.1007/s12598-013-0132-z

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