铸造技术2017，Vol.38Issue(10)：2365-2368,4.DOI:10.16410/j.issn1000-8365.2017.10.011
Nb含量对Si-Mn系热轧双相钢组织与力学性能的影响
Effect of Nb Content on the Microstructures and Mechanical Properties of Si-Mn Hot-Rolled Dual-Phase Steel
应传涛 1李秋鹤 2张红梅3
作者信息
- 1. 鞍钢股份鲅鱼圈分公司,辽宁营口115010
- 2. 营口理工学院机械与动力工程系,辽宁营口115014
- 3. 辽宁科技大学材料成型与组织性能控制省重点实验室,辽宁鞍山114051
- 折叠
摘要
Abstract
The effect of niobium content on the microstructures and mechanical properties of Si-Mn hot-rolled dual-phase steel was investigated.The results show that the martensite in the dual-phase steel presents different microstructures under different niobium contents,leading to different mechanical properties.When the content of niobium in the dual-phase steel is around 0.073％,microstructure of the steel is composed of irregular polygonal ferrite,a little retained austenite,island-like and lath-like martensite.In which,the volume fraction of martensite is 18.3％.The grade of strength in the dual-phase steel reaches 780～800 MPa due to the inner high dislocation density.关键词
热轧双相钢/组织形貌/力学性能/马氏体Key words
hot-rolled dual-phase steel/microstructure/mechanical properties/martensite分类
金属材料引用本文复制引用
应传涛,李秋鹤,张红梅..Nb含量对Si-Mn系热轧双相钢组织与力学性能的影响[J].铸造技术,2017,38(10):2365-2368,4.
