Journal of Materials Science

, Volume 31, Issue 7, pp 1865–1871 | Cite as

Modification of hypoeutectic low alloy white cast irons

  • Ma Qian
  • Wang Chaochang
  • Shoji Harada


In order to modify the continuous network of eutectic cementite normally found in low alloy white cast irons into a dispersive distribution, strategies of controlling the morphology of eutectic cementite by additives are discussed. Qualitative arguments are presented and applied to the development of a complex modifier REAINTi. With the addition of this modifier to low carbon white cast irons nearly one fifth of the original eutectic cementite network can be modified into blocky particles in the plane of polish, and one third into isolated irregular ones. The experimental data shows that Ti(CN) may act as an effective nucleant or a grain refiner for eutectic cementite. The modification effects of rare earth elements are attributed to their abilities to purify the melt, promote divorced eutectic growth and refine the microstructure. Aluminium contributes to the modification by its purification effect.


Polymer Microstructure Rare Earth Cementite Cast Iron 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Chapman & Hall 1996

Authors and Affiliations

  • Ma Qian
    • 1
  • Wang Chaochang
    • 2
  • Shoji Harada
    • 3
  1. 1.Department of Mechanical EngineeringTsinghua UniversityBeijingPeople’s Republic of China
  2. 2.Department of MetallurgyUniversity of Science and Technology, BeijingBeijingPeople’s Republic of China
  3. 3.Department of Mechanical EngineeringKyushu Institute of TechnologyKitakyushuJapan

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