摘要
通过固溶强化、细晶强化和沉淀强化的有效结合,设计了一种700 MPa级C-Si-Mn-V-Ti钢,进行了工业试制和产品的拉伸性能、冲击性能检验;利用金相显微镜和扫描电镜观察了连铸坯铸态组织、H型钢轧态组织和冲击断口。结果表明连铸坯枝晶细化,轧材组织为铁素体和珠光体,冲击断口为典型的韧性断口。
Based on the effective combination of solid solution strengthening theory,fine- grain strengthening theory and precipitation strengthening theory,a 700 MPa grade C- Si- Mn- V- Ti steel was designed,and after its trial production,the tensile and impact property testing of product was carried out,and by optical microscopy and scanning electron microscopy,the as-cast microstructure of billet,the asrolled microstructure and impact fracture of H beam were observed. The result show the dendrite of billet is fine,the microstructure of beam steel is ferrite and pearlite,and the impact fracture of impacted samples is typical ductile fracture.
出处
《莱钢科技》
2015年第1期35-37,共3页
Laigang Science & Technology
作者简介
刘成宝（1981-）,男,2010年1月毕业于中国科学院金属研究所材料学专业，博士。高级工程师，从事新产品开发工作。
