摘要
采用Gleeble2000高温力学性能模拟试验机对不同铝含量双相钢高温热塑性进行了对比研究。结果表明,Al的加入使得双相钢的高温低塑性区向高温区域偏移,温度区间由低铝时的710～920℃升高到高铝时的800～1020℃;为了避免铸坯表面产生裂纹,高铝双相钢矫直段温度应控制在1050～1150℃范围内,冷却水应采用弱冷水制度,并合理控制钢中的N、S及O的含量。同时发现,试验钢高温热塑性随着应变速率的增大而提高。
The hot ductility of two kinds cold-rolled dual-phase steel with the different aluminum amounts has been investigated. The results indicate that the high aluminum amount led the hot brittleness zone shift to the higher temperature zone, and the temperature zone shifted from 710-920 ℃ of the low-aluminum steel to 800- 1020℃ of the high-aluminum steel. In order to avoid the occurrence of the surface cracking during continuous casting, the temperature of the high-aluminum slab at the straightening stage should be maintained between 1050-1150 ℃, the secondary cooling water should be soft and the amount of N, S, O in the steel should be properly controlled. It is also indicated that the hot ductility of the steel is improved with the increase of the strain rate.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2007年第A03期363-366,共4页
Rare Metal Materials and Engineering
关键词
冷轧双相钢
高温热塑性
应变速率
脆性区
连续铸造
dual phase steel
hot ductility
strain rate
brittleness zone
continuous casting
