期刊论文

Fu, Xuesong

Sun, ZG (reprint author), Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116085, Peoples R China.; Sun, ZG (reprint author), Shanghai Aircraft Mfg Co Ltd, Shanghai 200436, Peoples R China.

Chen, Guoqing,Yang, Qi,Sun, Zhonggang,Zhou, Wenlong

2017-03-01

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY

SCIE、EI、Scopus

J

89

1-4

371-375

0268-3768

Hydrogen treatment; Ti-6Al-4V; Machining

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.