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- Title
Microstructure and Properties of a Medium‐Carbon High‐Strength Bainitic Steel Treated by Boro‐Austempering Treatment.
- Authors
Liu, Man; Wang, Zhoutou; Pan, Chenggang; Zhang, Qi; Hu, Haijiang; Xu, Guang
- Abstract
The microstructure and properties of a medium‐carbon high‐strength bainitic steel treated by integrated technology of austempering and boriding treatments (boro‐austempering) are investigated by metallographic method, electrochemical impedance spectroscopy, and so on. The results show that the carbide‐free bainite of substrate and the borided layers on the surface are successfully obtained by integrated boro‐austempering treatment. The hardness of surface is up to 2.5–3.0 times that of substrate and the surface corrosion resistance is significantly enhanced by boro‐austempering treatment, proving that boro‐austempering treatment is an effective method for increasing corrosion resistance and hardness of high‐strength bainitic steels. The present study provides a new and effective processing technology for the production of medium‐carbon high‐strength steels with better corrosion resistance and higher hardness.
- Subjects
BAINITIC steel; MICROSTRUCTURE; CORROSION resistance; SURFACE resistance; IMPEDANCE spectroscopy
- Publication
Steel Research International, 2020, Vol 91, Issue 9, p1
- ISSN
1611-3683
- Publication type
Article
- DOI
10.1002/srin.202000128