Volume 36 Issue 1
Jul.  2021
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TAO Su-fen, WANG Fu-ming, LI Meng-long, JIN Gui-xiang, CAO Min, CHAI Guo-qiang. Surface transverse crack formation study of A105 continuous casting billets[J]. Chinese Journal of Engineering, 2014, 36(1): 29-36. DOI: 10.13374/j.issn1001-053x.2014.01.005
Citation: TAO Su-fen, WANG Fu-ming, LI Meng-long, JIN Gui-xiang, CAO Min, CHAI Guo-qiang. Surface transverse crack formation study of A105 continuous casting billets[J]. Chinese Journal of Engineering, 2014, 36(1): 29-36. DOI: 10.13374/j.issn1001-053x.2014.01.005

Surface transverse crack formation study of A105 continuous casting billets

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  • Received Date: January 01, 2013
  • Available Online: July 09, 2021
  • The contents of tramp elements Cu, As and Sn as well as P in A105 continuous casting billets were analyzed by field emission scanning electron microscopy (FESEM) equipped with energy dispersive spectrometry (EDS). Main precipitates in the steel and the variation of P content in molten steel with solid fraction were calculated by Thermo-Calc thermodynamic software. The hot ductility of the steel was measured by using a Gleeble 1500 thermal simulator. It is found that P segregation is the main reason for transverse cracking of the steel. The segregation of tramp elements Cu, As and Sn at grain boundaries promotes the formation of cracks. Straightening in a lower temperature zone accelerates crack propagation. AlN precipitation may have nothing to do with the formation of cracks due to little AlN.

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