20MnSi螺纹钢钢筋脆断原因分析  

Analysis on Brittle Fracture Cause of Ribbed Rebar of 20MnSi Steel

作　　者：曾德应 

机构地区：[1]攀钢集团西昌新钢业有限公司炼钢厂,西昌615012

出　　处：《重庆科技学院学报（自然科学版）》2010年第1期91-93,共3页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：采用化学成分分析及金相检验跟踪试验方法对20MnSi螺纹钢钢筋脆断的成因进行研究。结果表明,20MnSi螺纹钢钢筋脆断的主要原因是钢材成分严重不均匀和金相组织不均匀甚至异常,以及局部增碳严重和冷却不当。提出了减少螺纹钢钢筋脆断的主要措施,为螺纹钢生产工艺优化提供了依据。By means of chemical composition analysis and metallographic examination, studying on brittle fracture causes of ribbed rebar of 20MnSi steel,the results show that the main causes of brittle fracture are serious non-uniform components and abnormal microstructure which caused by local carbon pick-up and improper cooling in ribbed rebars of 20MnSi steel.And the paper discussed the main measures to avoid brittle fracture and provided conference for the optimization of ribbed rebar steelmaking.

关 键 词：20MNSI钢 螺纹钢筋 脆断 金相检验 

分 类 号：TG115[金属学及工艺—物理冶金]