冷轧钢板变形织构的理论模拟

Theoretical Simulation of Rolling Texture Development in Steel Sheets

摘要: 采用取向分布函数法研究了钢板中的轧制织构。其中以110<111>滑移系滑移为基本变形机制,利用Sachs、Taylor、RC和PC等模型对轧制织构进行了理论模拟。这些理论模型可以再现体心立方金属冷轧过程中晶粒取向在112<110>,111<110>,111<112>及001<110>附近的聚集过程。分析表明110<111>滑移系的滑移是体心立方金属十分重要的变形机制,适当参考各种变形模型可以更为准确地描述冷轧织构的形成过程。还根据冷轧织构的变化过程分析讨论了钢板应力和应变张量连续性等问题。

Abstract: The ODF method was applied to investigate the rolling texture develop -ment in steel sheet. The texture was also simulated by the Sachs,Taylor, RC and PC models with 110 <111>ship systems. The theoretical models could reproduce the orientation accumulation around 112 <110>,111 <110>,<111><112>and 001 <110>.It was shown that the 110 <111>ship is very important deformation mechanism in b.c.c. metals. The rolling deformation process can be described more accurately if the assumptions of all models are considered properly. The continuities of both stress and strain during rolling deformation of steel sheet were also discussed.