Paper Title:
Mechanical and Physical Characters of the Cast Steel for Chinese Railway Rolling Wagon Bogie Frames
  Abstract

Chemical composition, metallurgical photos, macro- and micro-hardness values, macrostructures, inclusions, denseness, mechanical properties are experimentally investigated on the grade B cast steel for the bogie frames of Chinese railway rolling wagons. Results reveal that the material consists of ferrites and pearlites. Micro-hardness values of the ferrites are significant lower those of pearlites to indicate the ferrites is the weakest phase of material. Casting flaws are mainly point-network like eutectic sulfur compounds and polygonal sphere like Al2S3 compounds. Lower Young's modulus, higher proportion of yielding to ultimate strengths, higher reduction of area, and a lower elongation than those of conventional ferrous alloys are exhibited. These characters are contributed to the non-sharp cast flaws. The flaws play roles of two effects. One is to benefit anti-vibration capacity and fracture roughness. And another is to decrease the mechanical strengths.

  Info
Periodical
Advanced Materials Research (Volumes 118-120)
Edited by
L.Y. Xie, M.N. James, Y.X. Zhao and W.X. Qian
Pages
90-94
DOI
10.4028/www.scientific.net/AMR.118-120.90
Citation
Y. X. Zhao, B. Yang, "Mechanical and Physical Characters of the Cast Steel for Chinese Railway Rolling Wagon Bogie Frames", Advanced Materials Research, Vols. 118-120, pp. 90-94, 2010
Online since
June 2010
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Price
$32.00
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