38MnVS5钢连铸坯中硫化物形貌及形成机制的研究

特殊钢 ›› 2008, Vol. 29 ›› Issue (1): 54-56.

38MnVS5钢连铸坯中硫化物形貌及形成机制的研究

邓锋云¹, 李国忠², 涂益友¹, 惠荣² , 王新社² , 蒋建清¹

1东南大学材料科学与工程学院，南京211189;
2江阴兴澄特种钢铁有限公司，江阴214429

收稿日期:2007-08-14 出版日期:2008-02-01 发布日期:2022-12-15
作者简介:邓锋云(1983-),男，硕士研究生，2005年东南大学毕业，非调质易切削钢中硫化物形貌控制研究。
基金资助:
江苏省科技成果转化专项资金项目(编号BA2004019)

A Study on Formation Mechanism and Morphology of Sulfide in Billet of Steel 38MnVS5

Deng Fengyun¹, Li Gouzhong², Tu Yiyou¹, Hui Rong², Wang Xinshe², Jiang Jianqing1

1 School of Material Science and Engineering,Southeast University,Nanjing 211189;
2 Jiangyin Xingcheng Iron and Steel Co Ltd,Jiangyin 214429

Received:2007-08-14 Published:2008-02-01 Online:2022-12-15

摘要/Abstract

摘要： 用扫描电镜观察分析了38MnVS5钢320 mm×300 mm连铸坯中硫化物的三维形貌,结果显示,从铸坯表面到心部硫化物类型由球状变成杆状,并且在偏析严重区域呈片状或片状-杆状共存。球状硫化物是由包晶反应生成的,杆状硫化物为稳态共晶反应的产物。当合金元素含量较高时,由于过冷导致硫化物生长速度较快,杆状硫化物向片状硫化物转变。

关键词: 38MnVS5钢, 硫化物, 三维形貌, 形成机制

Abstract: The three-dimension morphology of sulfide in 320 mm×300 mm concasting billet of steel 38MnVS5 has been observed and analyzed by using scan electric microscope. The results indicated that the morphology of sulide changed from spheroidic in billet surface to elongated in centre of billet,and the morphology of sulfide in serious segregation zone was laminar or laminar + elongated. The spheroidic sulfide formed by peritectic reaction,and the elongated sulfide was e- quilibrium eutectic reaction products. With higher alloy elements content the sulfde grew quick due to supercooling, led to elongated sulfide transforming to laminar sulfide.

Key words: Steel 38MnVS5,Sulfide,Three-Dimension Morphology,Formation Mechanism

邓锋云′, 李国忠, 涂益友, 惠荣, 王新社, 蒋建清. 38MnVS5钢连铸坯中硫化物形貌及形成机制的研究[J]. 特殊钢, 2008, 29(1): 54-56.

Deng Fengyun, Li Gouzhong, Tu Yiyou, Hui Rong, Wang Xinshe, Jiang Jianqing. A Study on Formation Mechanism and Morphology of Sulfide in Billet of Steel 38MnVS5[J]. Special Steel, 2008, 29(1): 54-56.