ISSN：1003-8620

CN：42-1243/TF

Governed by: CITIC Pacific Special Steel Group Co., LTD

Sponsored by: Daye Special Steel Co., LTD.

Special Steel ›› 2008, Vol. 29 ›› Issue (1): 54-56.

Previous Articles     Next Articles

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. 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 Online:2008-02-01 Published:2022-12-15

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. 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
  • 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)

PDF

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

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

Website Copyright © Special Steel Supported by:Beijing Magtech