The results show that the range of austenitizing temperature required for bainite hardening and the hardness of bainite ductile cast iron is increased as vanadium is added.
研究结果表明，钒使贝氏体转变所要求的奥氏体化温度范围增大，并使贝氏体球铁的硬度提高。
Holding in the lower pearlite range accelerates subsequent transformation to bainite.
下珠光体区停留促进贝茵体的形核过程。
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