The influence of hydrogen on chip formation in cutting Ti-6Al-4V alloys

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• 作者：Xuesong Fu ; Guoqing Chen ; Qi Yang…
• 关键词：Hydrogen treatment ; Ti ; 6Al ; 4V ; Machining
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：89
• 期：1-4
• 页码：371-375
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering; Media Management; Mechanical Engineering; Computer-Aided Engineering (CAD, CAE) and Design;
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：89

文摘

The paper investigated how hydrogen, introduced via thermal diffusion, influenced the formation and morphology of chips formed by cutting Ti-6Al-4V alloys. The chips’ microstructure and characteristics were studied by using optical microscopy (OM), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Experimental results demonstrated that with an increase in plasticity, the lamellar chips transformed to saw-tooth chips. Metallurgical analysis suggested that the saw-tooth chips formed because of thermoplastic instability caused by large plastic deformation. In contrast, the lamellar chips formed because of crack initiation.