TY - JOUR
T1 - A study on cutting force of machining in situ TiB2 particle-reinforced 7050Al alloy matrix composites
AU - Xiong, Yifeng
AU - Wang, Wenhu
AU - Jiang, Ruisong
AU - Lin, Kunyang
N1 - Publisher Copyright:
© 2017, MDPI AG. All rights reserved.
PY - 2017/6
Y1 - 2017/6
N2 - In situ TiB2 particle-reinforced 7050Al alloy matrix composites are a new category of particulate metal matrix composites with improved mechanical and physical properties. At present, the study of machining in situ TiB2/Al composite is limited and no specific study has been presented on cutting force. Based on previous work, experimental investigation of cutting in situ TiB2/Al composite was carried out in this study to investigate the cutting force, shear angle, mean friction angle, and shear stress. The results indicated that the feed rate, instead of cutting speed, has a significant influence on the shear angle, mean friction angle, shear stress, and forces, which is different from cutting ex situ SiC/Al composites. Meanwhile, based on Merchant’s theory, a force model, which consists of chip formation and ploughing force, was established to have a better understanding of force generation. A comparison of the results show an acceptable agreement between the force model and experiments. Additionally, at varying feed rates, the linear relationship between the shear angle and mean friction angle is still suitable for cutting in situ TiB2/7050Al alloy composites.
AB - In situ TiB2 particle-reinforced 7050Al alloy matrix composites are a new category of particulate metal matrix composites with improved mechanical and physical properties. At present, the study of machining in situ TiB2/Al composite is limited and no specific study has been presented on cutting force. Based on previous work, experimental investigation of cutting in situ TiB2/Al composite was carried out in this study to investigate the cutting force, shear angle, mean friction angle, and shear stress. The results indicated that the feed rate, instead of cutting speed, has a significant influence on the shear angle, mean friction angle, shear stress, and forces, which is different from cutting ex situ SiC/Al composites. Meanwhile, based on Merchant’s theory, a force model, which consists of chip formation and ploughing force, was established to have a better understanding of force generation. A comparison of the results show an acceptable agreement between the force model and experiments. Additionally, at varying feed rates, the linear relationship between the shear angle and mean friction angle is still suitable for cutting in situ TiB2/7050Al alloy composites.
KW - Al
KW - Cutting force
KW - In situ
KW - Metal-matrix composites (MMCs)
KW - Modeling
KW - TiB particles
UR - http://www.scopus.com/inward/record.url?scp=85020049133&partnerID=8YFLogxK
U2 - 10.3390/met7060197
DO - 10.3390/met7060197
M3 - 文章
AN - SCOPUS:85020049133
SN - 2075-4701
VL - 7
JO - Metals
JF - Metals
IS - 6
M1 - 197
ER -