摘要
在实验室研究了不同卷取温度对C-Si-Mn-Al热轧高强度搅拌罐用钢组织性能的影响。采用激光共聚焦显微镜(LSCM)、扫描电子显微镜(SEM)、电子背散射衍射(EBSD)等技术对试验钢在不同卷取温度下的组织、力学性能进行对比研究。研究结果表明,试验钢在580、550℃卷取得到铁素体和珠光体组织;在400℃卷取得到铁素体和贝氏体组织;在300℃低温卷取得到铁素体、贝氏体和马氏体组织;在150℃低温卷取得到铁素体和马氏体组织。随着卷取温度的降低,试验钢的抗拉强度与硬度逐渐增大,伸长率逐渐降低。试验钢在300℃模拟卷取时抗拉强度达到1 029 MPa,维氏硬度为342.6;在150℃模拟卷取时抗拉强度高达1 265 MPa,维氏硬度达到360.7,屈强比达到最低,仅为0.58。
The effects of different coiling temperatures on the microstructure and properties of C-Si-Mn-Al hot-rolled high strength steel used for mixing tank were studied in the laboratory. And the structure and mechanical properties of the tested steels at different coiling temperatures were analyzed and studied by several techniques such as laser scanning confocal microscope(LSCM), scanning electron microscope(SEM), and electron backscatter diffraction(EBSD). The experimental results showed that ferrite and pearlite were obtained by coiling at 580 and 550 ℃. Ferrite and bainite were obtained at 400 ℃. Ferrite, bainite and martensite were obtained at 300 ℃. And Ferrite and martensite were obtained at 150 ℃. As the coiling temperature decreased, the tensile strength and hardness of the tested steel gradually increased, and the elongation gradually decreased. The tensile strength of the tested steel coiled at 300 ℃ was 1 029 MPa and the Vickers hardness was 342.6. The tensile strength coiled at the 150 ℃ was as high as 1 265 MPa, the Vickers hardness reached 360.7, and the yield ratio reached the lowest, only 0.58.
作者
王玥瑶
何青
赵征志
张明博
包阔
黄耀
WANG Yue-yao;HE Qing;ZHAO Zheng-zhi;ZHANG Ming-bo;BAO Kuo;HUANG Yao(Collaborative Innovation Center of Steel Technology,University of Science and Technology Beijing,Beijing 100083,China;Beijing Laboratory of Metallic Materials and Processing for Modern Transportation,Beijing 100083,China;Chengde Branch,Hebei Iron and Steel Co.,Ltd.,Chengde 067102,Hebei,China;China Electric Power Research Institute,Beijing 100192,China)
出处
《中国冶金》
CAS
北大核心
2020年第3期40-44,55,共6页
China Metallurgy
基金
广西创新驱动发展专项资金资助项目(AA18242012)
铁素体钢中纳米粒子相间析出行为与强韧化机理项目(51601174Ti-Mo).
关键词
高强度搅拌罐
卷取温度
组织
力学性能
high strength mixing tank
coiling temperature
microstructure
mechanical properties
作者简介
王玥瑶(1996—),女,硕士生,E-mail:1196591825@qq.com;通讯作者:赵征志(1977—),男,博士,研究员,E-mail:zhaozhzhi@ustb.edu.cn
