Results
Title

Comprehensive study on the cutting specific energy and surface roughness of milled in situ TiB2/Al composites and Al alloys.

Authors

Yu, Weiwei; Chen, Jie; Li, Yugang; Zuo, Zhenyu; Chen, Dong; An, Qinglong; Chen, Ming; Wang, Haowei

Abstract

Although TiB2 particles improve the wear resistance and hardness of in situ TiB2/Al composites, TiB2 particles bring challenges for machining TiB2/Al composites. In order to study the difference between the cutting performance of aluminum alloys and TiB2/Al composites, the milling experiment of 2024 aluminum alloys, 7075 aluminum alloys, TiB2/2024 composites, and TiB2/7075 composites was conducted. The cutting specific energy, the milling force coefficient, and machined surface roughness are analyzed. The results show that the cutting specific energy and cutting force coefficient of TiB2/Al composites are higher than those of the conventional aluminum alloys. In addition, the machined surface profile and its spectrum are analyzed. The results indicate tool vibration is the main reason for the abnormal high surface roughness, especially for conventional aluminum alloys. The cutting stability of TiB2/Al composites is better than that of conventional aluminum alloys. TiB2 particles hinder the plastic deformation of the matrix alloy, reducing the tool feed marks, which makes the surface roughness of TiB2/Al composites lower.

Subjects

SURFACE roughness; ALUMINUM alloys; ALLOYS; MILLING (Metalwork); WEAR resistance; CUTTING force; HEAT resistant alloys; METALLIC composites

Publication

International Journal of Advanced Manufacturing Technology, 2021, Vol 112, Issue 9/10, p2717

ISSN

0268-3768

Publication type

Academic Journal

DOI

10.1007/s00170-020-06478-1