向嵩,谭智林,梁益龙

• 1:贵州大学材料与冶金学院
• 2:贵州省材料结构与强度重点实验室
• 3:贵州黎阳航空动力有限公司

摘要(Abstract)：

利用Gleeble-3800热/力模拟机对Nb-V-Ti低碳微合金钢进行高温单道次热压缩实验,采用基于Murty准则的加工图研究该钢种在变形温度900～1150℃,应变速率0.01～10 s-1,工程应变70%下的组织特性。研究表明:功率耗散效率大于32%的峰区对应变形温度1024～1132℃、应变速率0.18～2.00 s-1,该区域为典型的等轴动态再结晶组织,为最佳热加工区域;失稳区对应900～930℃,0.1～2 s-1以及966～1150℃、1.45～10 s-1两个区域范围。

关键词(KeyWords)： 低碳微合金钢;热加工;加工图;动态再结晶;Murty准则

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(50901022,51361004);; 贵州省科技厅重大专项(黔科合重大专项字2010[6007]);; 贵州省优秀青年科技人才培养对象专项资金(黔科合人字(2013)15)

作者(Author): 向嵩,谭智林,梁益龙

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