ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The present study is concerned with the improvement of hardness and wear resistance in(Cr3C2,CrB)/carbon steel surface composites fabricated by high-energy electron beam irradiation.Two kinds of powder mixtures, 50Cr3C2-50STS304 and 50CrB-50STS304 (wt.%), were placed on aplain carbon steel substrate, which was then irradiated with electron beam. The surface compositelayer of 1.0~1.3 mm in thickness was successfully formed without defects, and contained a largeamount (up to 58 vol.%) of Cr7C3 or Cr1.65Fe0.35B0.9 particles in the austenite or martensite matrix.The hardness and wear resistance of the surface composites were 2~3 times higher than those of thesteel substrate according to hard particles. Particularly, the surface composite fabricated with CrBpowders showed excellent wear resistance because selective wear of the matrix was considerablyreduced
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.345-346.637.pdf
