By Topic

Structural analysis of a high-speed tool steel irradiated by an intense pulsed-ion beam

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

6 Author(s)
Akamatsu, H. ; Himeji Inst. of Technol., Hyogo, Japan ; Tanihara, Y. ; Ikeda, T. ; Iwasaki, H.
more authors

The surface of a high-speed tool steel has been modified by an intense pulsed-ion beam (IPIB) that has an ion energy of 180 keV, an ion current density of 460 A/cm2, and a pulse duration of 65 ns. Transformation of the crystalline structure in the sample surface layer by IPIB-irradiation was observed by a glancing angle X-ray diffraction and a transmission electron microscopy. The second-phase carbides, V4C3, Cr6C, and Fe6C, were dispersed from the irradiated surface layer. A martensitic matrix in the surface layer was converted into an austenitic matrix by ten-pulses-irradiation of the IPIB. After repeated IPIB-irradiation of 100 pulses, a mixed phase of the austenite containing 2.0 wt.% carbon and a cementite was formed in the surface layer. The crystalline size of the sample was reduced from 7 μm for the untreated to 41 nm after 100-pulses-irradiation. The Vickers hardness of the treated surface was Hv=1030 corresponding to 1.2 times of the untreated one. In addition, the friction coefficient of the treated surface was reduced from 1.2 to 0.9, and the wear resistance of the surface was significantly improved.

Published in:

Plasma Science, IEEE Transactions on  (Volume:30 ,  Issue: 5 )