摘要
对含 0 .1 9%碳的热轧双相钢分别在γ和γ +α相区进行双道次压缩试验 ,研究在不同变形温度和变形速率下钢的静态软化比随着间隙时间的变化规律。结果表明 ,在γ相区 ,随着变形温度的升高、变形速率的增加和间隙时间的延长 ,钢的静态软化比增加。在一定条件下 ,静态软化比可以达到 1 0 0 %。根据研究结果 ,对γ相区的静态再结晶动力学进行模型化。在γ +α相区 ,钢的静态软化比较低 ,它不仅受到变形温度、变形速率和间隙时间的影响 ,还受到两相组织组份的影响。
The double hit hot compression tests were proceeded of a 0.19% carbon hot rolled dual phase steel to determine the static softening ratios of steel at different deformation temperatures,strain rates and interpass time.The results show that in γ region,the softening ratio raises with increase of temperature,strain rate and interpass time,and it is possible to reach 100 percent in certain conditions.The kinetics of static recrystallization was modeled after the steel deformed in γ region.However,in γ+α region,the static softening is much lower than that in γ region.It is influenced not only by temperature,strain rate and time,but also by the proportion of ferrite in the dual phase steel.
出处
《宝钢技术》
CAS
2002年第4期41-45,共5页
Baosteel Technology
