Journal
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
Volume 134, Issue -, Pages 69-78Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijmachtools.2018.07.001
Keywords
Ti-6Al-4V alloy; Lamellar martensite; Anisotropic behaviour; CRSS; Ultraprecision rotary diamond cutting
Funding
- Research Committee of The Hong Kong Polytechnic University [PolyU 152054/15E]
- State Key Laboratory of Ultra-precision Machining Technology (RUWB)
Ask authors/readers for more resources
Ti-6Al-4V alloy with local anisotropic characteristics is produced by electropulsing treatment (EPT) and used in ultraprecision rotary diamond cutting to explore the deformation mechanism of the alloy. Two different orientations of lamellar martensite alpha give rise to the local anisotropic behaviour. Critical resolved shear stress (CRSS) is introduced in this paper to investigate the slip modes of the hexagonal closest packing martensite. A geometrical and physical model is also proposed for calculation of resolved shear stresses on various slipping systems. The results show that glide occurs in some certain directions on the condition that resolved shear stress equals or exceeds the CRSS. The cutting force varies with martensitic orientations, which is supposedly due to the combined effects of lamellar alpha phase sizes and the coordination or competition of diverse slipping directions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available