姚媛蓉,刘建生,段兴旺,焦永星

• 1:太原科技大学材料科学与工程学院

摘要(Abstract)：

采用Gleeble-1500D热模拟机模拟高温压缩实验,研究奥氏体不锈钢06Cr19Ni9NbN在900~1200℃、应变速率0.005~0.5s-1变形条件下的热变形行为,通过对实验数据的分析,得到了该钢的流动应力曲线,高温塑性本构方程,热变形激活能,建立了06Cr19Ni9NbN钢动态再结晶动力学模型和动态再结晶晶粒尺寸模型,为优化高温条件下的锻造加工工艺提供理论依据。结果表明,当变形温度越高、变形速率越小时,越易发生动态再结晶,同时在能够发生动态再结晶的条件下,变形量越大,动态再结晶越充分。

关键词(KeyWords)： 06Cr19Ni9NbN钢;动态再结晶;流动应力曲线

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51275330)

作者(Author): 姚媛蓉,刘建生,段兴旺,焦永星

DOI: 10.13289/j.issn.1009-6264.2015.09.016

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