The influence of hydrogen on chip formation in cutting Ti-6Al-4V alloys. Issue 1 (March 2017)

• Record Type: Journal Article
• Authors: Fu, Xuesong; Chen, Guoqing; Yang, Qi; Sun, Zhonggang; Zhou, Wenlong
• Is Part Of: International journal of advanced manufacturing technology. Volume 89:Issue 1/4(2017)
• Page Start: 371
• Page End: 375
• Publication Date: 2017-03
• Subjects: Hydrogen treatment -- Ti-6Al-4V -- Machining; Manufacturing processes -- Periodicals; Production engineering -- Periodicals; 670.427
• DOI: 10.1007/s00170-016-9100-8
• Languages: English
• ISSNs: 0268-3768

Abstract

Abstract 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.