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In recent years, the vigorous rise of the wind power industry has put forward more stringent challenges to the performance of wheel hub casting materials, especially the use of low temperature ductile iron tensile strength, elongation, and low temperature impact toughness of which ability to puts forward higher requirements. In this paper, the influence of different Mn contents on the microstructure and properties of low-temperature ductile iron was studied to determine the best Mn addition amount. It can be determined by experiments that when the amount of Mn is 0.3%, the tensile strength of the material can reach 401MPa, the elongation is 29%, and the low temperature impact toughness of -30℃ and -40℃ is 11.5J and 10.13J, respectively.

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Effect of Different Mn Content on Ductile Iron QT400-18AL

  • 会议论文

  • 发表日期：

    2026年

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  • Hanxue Cao,
  • Yifan Gao,
  • Shen Cui,
  • Shuxiong Wan,
  • Weilong Zhao,
  • Jianliang Yu,
  • Guanguo Li

摘要

In recent years, the vigorous rise of the wind power industry has put forward more stringent challenges to the performance of wheel hub casting materials, especially the use of low temperature ductile iron tensile strength, elongation, and low temperature impact toughness of which ability to puts forward higher requirements. In this paper, the influence of different Mn contents on the microstructure and properties of low-temperature ductile iron was studied to determine the best Mn addition amount. It can be determined by experiments that when the amount of Mn is 0.3%, the tensile strength of the material can reach 401MPa, the elongation is 29%, and the low temperature impact toughness of -30℃ and -40℃ is 11.5J and 10.13J, respectively.