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首页> 外文期刊>ISIJ international >Effects of Ti Addition on Austenite Grain Growth during Reheating of As-Cast 0.2 mass% Carbon Steel
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Effects of Ti Addition on Austenite Grain Growth during Reheating of As-Cast 0.2 mass% Carbon Steel

机译：钛添加对铸态0.2质量％碳钢再加热时奥氏体晶粒长大的影响

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摘要

Effects of Ti addition on grain growth in reversely-transformed austenite structure during reheating of the as-cast 0.2 mass% C steel have been investigated for a Ti concentration range between 0 and 0.2 mass% and heating rates from 0.014 to 2.5°C/s. The austenite grain growth during reheating is retarded by the Ti addition and such an effect becomes stronger with the addition of higher amount of Ti. This retarding effect is ascribable to the pinning effect of fine Ti(C,N) particles which should precipitate from the as-cast structure during the reheating process. The experimental results on the grain growth behavior are well explained by the grain growth model including the Zener force and counting reduction of the pinning effect due to the existence of the coarse Ti(C,N) particles crystallized during the solidification.
机译：研究了添加的钛对浓度为0到0.2质量％，加热速率为0.014到2.5°C / s的铸态0.2质量％C钢在再加热过程中反相转变奥氏体组织中晶粒长大的影响。 。通过添加Ti来抑制再加热时的奥氏体晶粒的生长，并且通过添加更多量的Ti，该效果变得更强。这种阻滞作用归因于细小的Ti（C，N）颗粒的钉扎作用，该颗粒应在再加热过程中从铸态结构中析出。晶粒生长行为的实验结果可以通过晶粒生长模型很好地解释，该模型包括齐纳力和由于凝固过程中存在的粗大Ti（C，N）颗粒的存在而导致钉扎效应减少的计数。

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