铌对微合金化高碳钢奥氏体晶粒长大的影响
发布时间:2018-09-09 20:08
【摘要】:研究了铌对钒微合金化高碳钢在不同加热温度和保温时间下的奥氏体晶粒长大规律的影响。结果表明,含铌A钢在1100℃以下具有较好的抗晶粒粗化能力,组织中存在大量以Nb C为主的析出物,其奥氏体晶界迁移能仅为44.2 k J/mol;而不含铌B钢,不具有某一温度下的抗晶粒粗化能力,同时组织中仅发现较少量VC析出物,其奥氏体晶界迁移能高达197.2 k J/mol;在高碳钢中,同一奥氏体温度下,V降低Nb C完全溶解温度。
[Abstract]:The effect of niobium on austenite grain growth of vanadium microalloyed high carbon steel at different heating temperature and holding time was studied. The results show that NB A steel has good grain coarsening resistance below 1100 鈩,
本文编号:2233440
[Abstract]:The effect of niobium on austenite grain growth of vanadium microalloyed high carbon steel at different heating temperature and holding time was studied. The results show that NB A steel has good grain coarsening resistance below 1100 鈩,
本文编号:2233440
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