铸造技术2016，Vol.37Issue(9)：1831-1834,4.DOI:10.16410/j.issn1000-8365.2016.09.009
控轧控冷工艺对建筑用钢组织与性能的影响
Effect of Controlled Rolling and Cooling Process on Microstructure and Properties of Steel Structures
耿城 1董瑞华2
作者信息
- 1. 信阳农林学院工程系,河南信阳464000
- 2. 北京科技大学材料学院,北京100083
- 折叠
摘要
Abstract
Through the method of thermal simulating on 20MnSi steel for construction to obtain CCT curve,a controlled rolling and controlled cooling process was designed according to the results of the CCT curve,and the microstructure and mechanical properties of 20MnSi steel with conventional cooling and controlled rolling&controlled cooling process were analyzed.The results show that the core microstructure of 20MnSi steel is ferrite and pearlite,and the location with 1/2 radius is ferrite,pearlite and a small amount of Troostite,the edge region is tempered Sorbite and a small amount of Troostite;the grain size of the center region is 8.5 grade,the ferrite grain size of the 1/2 radius is 10 grade;the yield strength and tensile strength of 20MnSi steel with controlled rolling are higher than that with conventional process,the elongation and the ratio of intensity and yield strength is lower than the latter,but all meet the national standard for HRB400 steel;with the increase of cooling bed temperature,yield strength and tensile strength of 20MnSi steel gradually decrease,and the elongation and hardening ratio increases with the increase of cooling bed temperature.关键词
控轧控冷/建筑用钢/组织/性能Key words
controlled rolling and controlled cooling/construction steel/microstructure/property分类
矿业与冶金引用本文复制引用
耿城,董瑞华..控轧控冷工艺对建筑用钢组织与性能的影响[J].铸造技术,2016,37(9):1831-1834,4.
