Explore the strengthening mechanisms of the ultra-low carbon and low alloy Steel

摘要：

Room temperature tensile tests were carried on the hot-rolled state ultra-low carbon and low alloy cabainite and martensite steels which were get by different finishing temperatures and different cooling methods.We used the Scanning Electron Microscopy(SEM), Electron Backscattered Diffraction (EBSD) and X-Ray Diffractometer (XRD) to identify the metallographic structure and analyse the precipitated phase. The inherent mechanism of high strength of ultra-low carbon and low alloy bainite and martensite steels was discussed, and the analysis indicated that the reinforcement of ultra-low carbon and low alloy bainite and martensite steels was mainly produced by the superposition of the dislocation strengthening, solution strengthening and grain refinement strengthening.

关键词： ultra-low carbon and low alloy bainite and martensite steel dislocation strengthening solution strengthening fine-grain strengthening precipitation strengthening

作者: Liu Pan Li Hongmei Liu Rongpei Bao Yaozong

作者单位: Kunming University of Science and Technology Kunming,Yunnan 650093, China;Central Iron & Steel Resea Kunming University of Science and Technology Kunming,Yunnan 650093, China Central Iron & Steel Research Institute,Beijing 100081, China

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 899-902

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）