Paper Title:
Effect of Vanadium on Microstructure and Mechanical Properties of Air Cooled Medium Carbon High Silicon Bainite Steels
  Abstract

The effect of vanadium on the bainite transformation of medium carbon high silicon steel during air cooling was studied by using Optical Microscopy (OM) and Transmission Electron Microscopy (TEM). The mechanical properties of the test steels subjected to heat treatment were measured by tensile, hardness and impact tests. The results showed that, through the same heat treatment process, the microstructure of the V-alloyed steel was comprised of Carbide-Free Bainite (CFB, bainite + retained austenite) and martensite while the microstructure of the V-free steel was composed of ferrite/pearlite, which made the V-alloyed steels exhibit superior combination of strength, hardness and toughness to the V-free steel, but the elongation of the V-alloyed steel was worse than that of the V-free steel somewhat. Vanadium was helpful for the transformation of bainite in the tested medium carbon high silicon steel under air cooling condition. The carbon-enriched retained austenite films in the CFB enhanced the toughness of the V-alloyed steel.

  Info
Periodical
Advanced Materials Research (Volumes 311-313)
Chapter
Steel and Iron
Edited by
Zhongning Guo
Pages
931-935
DOI
10.4028/www.scientific.net/AMR.311-313.931
Citation
J. Miao, L. J. Wang, C. M. Liu, "Effect of Vanadium on Microstructure and Mechanical Properties of Air Cooled Medium Carbon High Silicon Bainite Steels", Advanced Materials Research, Vols. 311-313, pp. 931-935, 2011
Online since
August 2011
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Price
$32.00
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