An investigation of resolved shear stress on activation of slip systems during ultraprecision rotary cutting of local anisotropic Ti-6Al-4V alloy: Models and experiments

Zejia Zhao; Suet To

doi:10.1016/j.ijmachtools.2018.07.001

An investigation of resolved shear stress on activation of slip systems during ultraprecision rotary cutting of local anisotropic Ti-6Al-4V alloy: Models and experiments

Zejia Zhao, Suet To (Corresponding Author)

Research output: Journal article publication › Journal article › Academic research › peer-review

25 Citations (Scopus)

Abstract

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 α 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 α phase sizes and the coordination or competition of diverse slipping directions.

Original language	English
Pages (from-to)	69-78
Number of pages	10
Journal	International Journal of Machine Tools and Manufacture
Volume	134
DOIs	https://doi.org/10.1016/j.ijmachtools.2018.07.001
Publication status	Published - Nov 2018

Keywords

Anisotropic behaviour
CRSS
Lamellar martensite
Ti-6Al-4V alloy
Ultraprecision rotary diamond cutting

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

More information

10.1016/j.ijmachtools.2018.07.001

http://hdl.handle.net/10397/104246

Cite this

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title = "An investigation of resolved shear stress on activation of slip systems during ultraprecision rotary cutting of local anisotropic Ti-6Al-4V alloy: Models and experiments",

abstract = "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 α 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 α phase sizes and the coordination or competition of diverse slipping directions.",

keywords = "Anisotropic behaviour, CRSS, Lamellar martensite, Ti-6Al-4V alloy, Ultraprecision rotary diamond cutting",

author = "Zejia Zhao and Suet To",

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An investigation of resolved shear stress on activation of slip systems during ultraprecision rotary cutting of local anisotropic Ti-6Al-4V alloy: Models and experiments. / Zhao, Zejia; To, Suet (Corresponding Author).
In: International Journal of Machine Tools and Manufacture, Vol. 134, 11.2018, p. 69-78.

Research output: Journal article publication › Journal article › Academic research › peer-review

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T2 - Models and experiments

AU - Zhao, Zejia

AU - To, Suet

N1 - Funding Information: The work described in this paper was jointly supported by the Research Committee of The Hong Kong Polytechnic University (Project No. PolyU 152054/15E ) and State Key Laboratory of Ultra-precision Machining Technology (RUWB) . Funding Information: The work described in this paper was jointly supported by the Research Committee of The Hong Kong Polytechnic University (Project No. PolyU 152054/15E) and State Key Laboratory of Ultra-precision Machining Technology (RUWB). Publisher Copyright: © 2018

PY - 2018/11

Y1 - 2018/11

N2 - 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 α 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 α phase sizes and the coordination or competition of diverse slipping directions.

AB - 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 α 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 α phase sizes and the coordination or competition of diverse slipping directions.

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An investigation of resolved shear stress on activation of slip systems during ultraprecision rotary cutting of local anisotropic Ti-6Al-4V alloy: Models and experiments

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Keywords

ASJC Scopus subject areas

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