过时效温度对冷轧双相钢组织性能的影响
Effect of Over-aging Temperature on Microstructure and Properties of Cold-rolling Dual Phase Steel
孙婷婷, 唐 荻, 江海涛, 田志强
点击：3127次 下载：0次
作者单位：(北京科技大学 高效轧制国家研究工程中心, 北京 100083)
中文关键字：冷轧双相钢； 马氏体； 抗拉强度； 屈服强度； 过时效
英文关键字：cold-rolling dual phase steel; martensite; tensile strength; yield strength; over-aging
中文摘要：研究了过时效温度(室温～500 ℃)对超高强低碳冷轧双相钢力学性能的影响。研究表明，随着过时效温度升高，马氏体发生分解，抗拉强度呈现下降的趋势；且在回火过程中，晶粒呈现出明显的长大趋势；过时效温度高于300 ℃时，实验钢出现屈服延伸。该钢种最佳过时效温度以200～300 ℃为宜。
英文摘要：The research focused on analyzing the effect of over-aging temperature on the mechanical properties and microstructure of super high strength mild cold-rolled dual phase steel. The selected over-aging temperature is from room temperature to 500 ℃. The results show that, as the over-aging temperature increases, the tensile strength reduces because of the decomposition of martensite, and the growth of grains. When the over-aging temperature is higher than 300 ℃, yield extension breaks out. The best over-aging temperature for this kind of steel is between 200 ℃ and 300 ℃.