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Indexed by:期刊论文

Date of Publication:2009-02-01

Journal:JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

Included Journals:SCIE、EI

Volume:209

Issue:3

Page Number:1362-1367

ISSN No.:0924-0136

Key Words:High-speed cutting; Adiabatic shear; Linear perturbation analysis; Critical condition

Abstract:An adiabatic shear critical condition in the high-speed cutting was built by linear perturbation analysis. The effects of material properties and deformation conditions on the onset of adiabatic shear were quantitatively investigated. The results show that the adiabatic shear is likely to form under the conditions of smaller strain hardening index, smaller strain rate hardening index, larger thermal softening index, larger viscosity, larger strain, larger strain rate, larger compression stress, lower initialization temperature, smaller density and smaller thermal capacity. The effect of thermal conductivity on the onset of adiabatic shear can be neglected. (C) 2008 Elsevier B.V. All rights reserved.