Title of Paper:High speed grinding of particulate reinforced titanium matrix composites using a monolayer brazed cubic boron nitride wheel

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Affiliation of Author(s):机电学院

Journal:INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY

Key Words:Particulate reinforced titanium matrix composites Monolayer brazed CBN wheel Machinability Removal mechanism Surface integrity

Abstract:This paper aims at investigating the machinability of particulate reinforced titanium matrix composites (PTMCs) during high speed grinding (80-140 m/s) using a monolayer brazed cubic boron nitride (CBN) superabrasive wheel. The removal mechanism of the hard-brittle reinforcements of PTMCs is discussed based on finite element simulation. Results obtained show that the grinding forces, temperature, specific energy, and ground surface roughness of PTMCs were usually higher than those of Ti-6Al-4V alloy under the defined experimental conditions. The undeformed chip thickness has a great effect on the removal behavior of the hard-brittle reinforcements of PTMCs, which can result in different defects in the ground surface. Finally, the microstructure alteration and hardening phenomenon in the subsurface layer were characterized quantitatively.

ISSN No.:0268-3768

Translation or Not:no

Date of Publication:2017-05-01

Co-author:Xi, Xinxin,Zhengminqing Li,xjh

Correspondence Author:dwf