冷軋鋼板變形織構的理論模擬

Theoretical Simulation of Rolling Texture Development in Steel Sheets

摘要: 采用取向分布函數法研究了鋼板中的軋制織構。其中以110<111>滑移系滑移為基本變形機制,利用Sachs、Taylor、RC和PC等模型對軋制織構進行了理論模擬。這些理論模型可以再現體心立方金屬冷軋過程中晶粒取向在112<110>,111<110>,111<112>及001<110>附近的聚集過程。分析表明110<111>滑移系的滑移是體心立方金屬十分重要的變形機制,適當參考各種變形模型可以更為準確地描述冷軋織構的形成過程。還根據冷軋織構的變化過程分析討論了鋼板應力和應變張量連續性等問題。

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.