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Processing Maps for Use in Hot Working of Ductile Iron

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Abstract

The hot deformation characteristics of ductile iron are studied in the temperature range of 973 to 1273K and strain rate range of 0. 001 to 1 s−1 by using hot compression tests. Processing maps for hot working are developed on the basis of the variations of efficiency of power dissipation with temperature and strain rate. The results reveal that the flow stress of ductile iron is sensitive to strain rate. In the processing map under strain of 0.7, a domain is centered at 1 273 K and 1 s−1, and the maximum efficiency is more than 36%. According to the maps, the zone with the temperature range of 1173 to 1 273 K and strain rate range of 0. 1 to 1 s−1 may be considered as the optimum region for hot working.

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Authors and Affiliations

  1. The Sixth Department, Zhengzhou Institute of Aeronautics, Zhengzhou, Henan, 450015, China

    Xin Zhao (Doctor, Associate Professor)

  2. Zhengzhou Zhongxing Basic Constructions Development Co Ltd., Zhengzhou, Henan, 450015, China

    Xiao-ling Yang

  3. State Key Laboratory of Metastable Materials Science and Technology, Qinhuangdao, Hebei, 066004, China

    Tian-fu Jing

Authors
  1. Xin Zhao
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  2. Xiao-ling Yang
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  3. Tian-fu Jing
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Corresponding author

Correspondence to Xin Zhao.

Additional information

Foundation Item: Item Sponsored by National Natural Science Foundation of China and Baosteel (50271061, 50371074)

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Zhao, X., Yang, Xl. & Jing, Tf. Processing Maps for Use in Hot Working of Ductile Iron. J. Iron Steel Res. Int. 18, 48–51 (2011). https://doi.org/10.1016/S1006-706X(11)60049-6

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  • DOI: https://doi.org/10.1016/S1006-706X(11)60049-6

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