TY - JOUR
T1 - Machinability improvement and its mechanism in SUS304 austenitic stainless steel by precipitated hexagonal boron nitride
AU - Emura, Satoshi
AU - Kawajiri, Masahiro
AU - Min, Xiaohua
AU - Yamamoto, Shigeo
AU - Sakuraya, Kazuyuki
AU - Tsuzaki, Kaneaki
PY - 2013
Y1 - 2013
N2 - To improve the machinability of SUS304 (Type 304) austenitic stainless steels, specimens were prepared containing 0.016 mass% boron and 0.2 mass% nitrogen, and hexagonal boron nitride (h-BN) particles with a diameter of 1 to 5 ì m were precipitated. Precipitation of h-BN reduced the cutting force and tool wear during lathe turning with a cemented carbide tool insert, especially at cutting speeds of 40 m/min and higher. The reduction in cutting force appeared attributable to internal lubrication by h-BN in the chip shear region and the deformation flow layer, as well as to lubrication between the chip and carbide tool. Improved chip disposability and tool wear suppression were also achieved by h-BN precipitation. SUS304 steel with precipitated h-BN was found to exhibit good machinability in drilling and sawing operations with high-speed steel tools.
AB - To improve the machinability of SUS304 (Type 304) austenitic stainless steels, specimens were prepared containing 0.016 mass% boron and 0.2 mass% nitrogen, and hexagonal boron nitride (h-BN) particles with a diameter of 1 to 5 ì m were precipitated. Precipitation of h-BN reduced the cutting force and tool wear during lathe turning with a cemented carbide tool insert, especially at cutting speeds of 40 m/min and higher. The reduction in cutting force appeared attributable to internal lubrication by h-BN in the chip shear region and the deformation flow layer, as well as to lubrication between the chip and carbide tool. Improved chip disposability and tool wear suppression were also achieved by h-BN precipitation. SUS304 steel with precipitated h-BN was found to exhibit good machinability in drilling and sawing operations with high-speed steel tools.
UR - http://www.scopus.com/inward/record.url?scp=84887433419&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84887433419&partnerID=8YFLogxK
U2 - 10.2355/isijinternational.53.1841
DO - 10.2355/isijinternational.53.1841
M3 - Article
AN - SCOPUS:84887433419
VL - 53
SP - 1841
EP - 1849
JO - Transactions of the Iron and Steel Institute of Japan
JF - Transactions of the Iron and Steel Institute of Japan
SN - 0915-1559
IS - 10
ER -