Effect of minor Ce and Zr on the wear property of a nickel-saving austenitic heat-resistant cast steel

ABSTRACT

In this work, the effect of Ce and Zr on the wear performance of a nickel-saving austenitic heat-resistant cast steel at room temperature and 900 °C are investigated. The wear mechanism and strengthening mechanism played by the addition of Ce and Zr are also discussed. The enhanced work-hardening rate after adding Ce and Zr strengthens the worn surface during wearing and improves the wear resistance of the nickel-saving austenitic steel at room temperature. The addition of Ce and Zr reduces the dynamic recovery and recrystallisation softening effect, which is the main reason for improving the high-temperature wear performance of the nickel-saving austenitic steel. Besides, the wear-protective glaze layer formed on the worn surface of Ce- and Zr-containing alloys could also reduce the high-temperature wear of the nickel-saving austenitic steel.

KEYWORDS:

• Austenitic heat-resistant steel
• high manganese
• cerium
• zirconium
• wear performance

Author’s contribution

TL is the corresponding author who is responsible for the manuscript composition. LJ is primarily responsible for the revision of the manuscript. ZC is mainly responsible for carrying out measurements and the design and preparation of the experimental apparatus. YF is responsible for the operation of SEM. SY is responsible for operating the TEM.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Open Fund of National Joint Engineering Research Center for abrasion control and molding of metal materials [HKDNM2019016], and National Natural Science Foundation of China [52001072], and Guangdong Province Key Area R&D Program [2019B010942001, 2020B010184001, 2020B0101340004], and Science and Technology Planning Projectof Guangdong Province [2018A050506055], and Guangzhou International Science and Technology Cooperation Project [201907010026], and GuangdongSpecial Support Program [2017TQ04C645], and Guangdong Introducing Innovativeand Enterpreneurial Teams [2016ZT06G025].