Next Article in Journal
Fretting Wear Damage Mechanism of Uranium under Various Atmosphere and Vacuum Conditions
Previous Article in Journal
Pheochromocytoma (PC12) Cell Response on Mechanobactericidal Titanium Surfaces
Open AccessArticle

Mechanisms and FEM Simulation of Chip Formation in Orthogonal Cutting In-Situ TiB2/7050Al MMC

The Key Laboratory of Contemporary Design and Integrated Manufacturing Technology, Ministry of Education, Northwestern Polytechnical University, Xi’an 710072, China
*
Author to whom correspondence should be addressed.
Materials 2018, 11(4), 606; https://doi.org/10.3390/ma11040606
Received: 11 March 2018 / Revised: 10 April 2018 / Accepted: 10 April 2018 / Published: 15 April 2018
(This article belongs to the Section Manufacturing Processes and Systems)
The in-situ TiB2/7050Al composite is a new kind of Al-based metal matrix composite (MMC) with super properties, such as low density, improved strength, and wear resistance. This paper, for a deep insight into its cutting performance, involves a study of the chip formation process and finite element simulation during orthogonal cutting in-situ TiB2/7050Al MMC. With chips, material properties, cutting forces, and tool geometry parameters, the Johnson–Cook (J–C) constitutive equation of in-situ TiB2/7050Al composite was established. Then, the cutting simulation model was established by applying the Abaqus–Explicit method, and the serrated chip, shear plane, strain rate, and temperature were analyzed. The experimental and simulation results showed that the obtained material’s constitutive equation was of high reliability, and the saw-tooth chips occurred commonly under either low or high cutting speed and small or large feed rate. From result analysis, it was found that the mechanisms of chip formation included plastic deformation, adiabatic shear, shearing slip, and crack extension. In addition, it was found that the existence of small, hard particles reduced the ductility of the MMC and resulted in segmental chips. View Full-Text
Keywords: in-situ; TiB2 particle; Al metal matrix composite; chip formation; FEM simulation in-situ; TiB2 particle; Al metal matrix composite; chip formation; FEM simulation
Show Figures

Graphical abstract

MDPI and ACS Style

Xiong, Y.; Wang, W.; Jiang, R.; Lin, K.; Shao, M. Mechanisms and FEM Simulation of Chip Formation in Orthogonal Cutting In-Situ TiB2/7050Al MMC. Materials 2018, 11, 606.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop