摘要
从22MnB5硼镁合金板材成形温度、降温速率和材料的相变形出发,研究了热成形过程中冷却速度、温度变化对回弹的影响,同时探讨了板材厚度等因素对高强度板材成形性能的影响。结果表明,板材的初始条件、板材热成形时的温度场变化和相变行为是影响回弹的主要因素;当冷却速度超过临界冷却速度时,回弹急剧增大;板材厚度对回弹控制和热成形工艺参数的制定有重大影响。
From the aspects of forming temperature,cooling rate and phase transformation,the effects of cooling rate and temperature on the rebound during hot-stamping and the effect of sheet material thickness on the forming performance of high strength sheet material were studied.The results show that the initial conditions,temperature field change during thermal forming and phase deformation are the main factors affecting the rebound.When the cooling rate is above the critical cooling rate,the rebound dramatically increases.The sheet material thickness has important impacts on the rebound control and formulating parameters of thermal forming process.
出处
《热加工工艺》
CSCD
北大核心
2011年第15期8-11,共4页
Hot Working Technology
基金
福建省自然基金项目(2009J01259)
厦门市自然基金项目(3502Z20083022)
关键词
高强度板
热成形
回弹
变形
22MnB5
high strength steel
hot forming
springback
transmutation
22MnB5
作者简介
郭幼丹（1960-），男，福建厦门人，副教授，硕士研究生，主要研究方向：材料成形与表面工程技术；电话：13606001156；E—mail：chjmu@163．com
