45号钢热轧钢板延伸率的影响因素研究  

Research on Influence Factors for the Elongation of the Hot-Rolled Steel Plate of No.45 Steel

作　　者：李小同 马立[1] 马晓晓 LI Xiaotong;MA Li;MA Xiaoxiao(Beijing Aerospace Propulsion Institute,Beijing,100076 China)

机构地区：[1]北京航天动力研究所,北京100076

出　　处：《科技资讯》2024年第6期99-103,共5页Science & Technology Information

摘　　要：针对45号钢热轧中厚板生产过程中出现的力学性能不合格,尤其是延伸率不合格的情况,进行了关于45号钢热轧钢板延伸率影响因素的研究。通过对45号钢热轧钢板试样进行宏观性能拉伸试验和微观金相组织观察,将伸长率合格试样与不合格试样在非金属夹杂物、带状组织、珠光体百分含量、晶粒大小等方面进行了对比,得出了影响45号钢热轧钢板延伸率不合格的因素。In view of unqualified mechanical properties in the production process of the hot-rolled medium-thick plate of No.45 steel,in particular unqualificated elongation,this paper studies the influence factors of the elongation of the hot-rolled steel plate of No.45 steel.Through the macro-property tensile test and micro-metallographic structure observation of the samples of the hot-rolled steel plate of No.45 steel,this paper compares the samples with qualified elongation and ones with unqualified elongation in terms of non-metallic inclusions,banded structure,the percentage content of pearlite,grain sizes,etc.,and obtains the influence factors of the unqualified elongation of the hot-rolled steel plate of No.45 steel.

关 键 词：45号钢 延伸率 力学性能 微观金相 

分 类 号：TG142.1[一般工业技术—材料科学与工程]