The phenomenon of hardness lag of the alloyed Bainite ductile cast iron has been discussed.This phenomenon showed that after the step austempering, the hardness increased with the time.

 
  • 研究了硼、铜、锰对贝氏体球墨铸铁组织和性能的影响,并讨论了球墨铸铁的性能滞后现象,即等温淬火后随时问延长硬度增加的现象。
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