摘要
从高强度冷轧双相钢的冶金成分设计出发,设计了三种不同成分的C-Mn-Si系冷轧双相钢,通过在(α+γ)两相区不同温度的加热淬火,获得(Ferrite+Martensite)双相组织;探讨了1000MPa级冷轧双相钢的热处理工艺、性能与组织;研究了退火温度、冷却速度对双相钢性能的影响,分析了双相钢的强化机理,并且优化了退火工艺参数。结果表明,1000MPa级冷轧双相钢最优退火温度为780￣800℃,680℃开始快冷,缓冷速度为10℃/s。
Aimed at the design of the metallurgy component, three kinds of C-Mn-Si alloy system were obtained. The dual phase texture of （M＋F） can be obtained after intercritical heat treatment. The technique of （α＋γ） intercritical heat treatment, the microstructure and mechanical properties of 1 000 MPa cold rolling dual phase steel were discussed, the effects of heating-up temperature and cooling rate on mechanical properties were studied. The strengthening mechanism of dual phase steel was analyzed. The annealing parameters were investigated and optimized. The results show that the optimum heating-up temperature is from 780 ℃ to 800℃, the slow cooling rate should be approximately controlled at 10℃/s, the fast cooling starts at 680℃.
出处
《热加工工艺》
CSCD
北大核心
2008年第4期42-45,共4页
Hot Working Technology
关键词
双相钢
退火工艺
力学性能
退火温度
dual phase steel
anneal processing
mechanical properties
anealing temperature
