Heat Treatment of Metals ›› 2021, Vol. 46 ›› Issue (6): 236-239.DOI: 10.13251/j.issn.0254-6051.2021.06.046

• FAILURE ANALYSIS • Previous Articles     Next Articles

Cracking analysis of 8418 steel barrel used for aluminum-melting

Zhao Xin'e   

  1. Shanghai Railway Certification(Group) Co., Ltd., Shanghai 200434, China
  • Received:2021-01-18 Online:2021-06-25 Published:2021-07-21

Abstract: Cracking occurred in the cooling hole of 8418 hot die steel used in an aluminum-melting barrel. The causes of cracking were analyzed by scanning electron microscope, energy dispersive spectrometer, optical microscope, Rockwell hardness tester and direct reading spectrometer. The results show that there are media containing Ca, S and Cl in the cooling hole of the barrel, which leads to stress corrosion cracking.

Key words: hot die steel 8418, stress corrosion cracking, failure analysis

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