Effect of High Temperature Aging on Wear Resistance of a High-Nitrogen Stainless Steel

Du Xiong Wang; Rui Zhou; Guo Wang Ding; Cheng Liu

doi:10.4028/www.scientific.net/KEM.775.454

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 775Effect of High Temperature Aging on Wear...

Effect of High Temperature Aging on Wear Resistance of a High-Nitrogen Stainless Steel

Abstract:

The wear resistance of a Cr₁₉Mn₁₉Mo₂N_0.7 stainless steel treated by solution treatment 1160°C for 6h then aging at 900°C for different times is investigated in this paper. Microstructures are analyzed using optical microscopy (OM) and scanning electron microscopy (SEM). A fingerprint nitride (Cr₂N) structure is formed during aging, which first nucleates within ferrite laths and along the austenite grain boundaries, and then grows into austenite with increasing aging time. It is shown from the laboratory wear test that the optimum wear resistance is obtained through a solution treatment at 1160°C for 6h and aging at 900°C for 3h, which is mainly attributed to a moderate amount of fingerprint nitrides formed within ferrite laths.

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Periodical:

Key Engineering Materials (Volume 775)

Pages:

454-458

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.775.454

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Online since:

August 2018

Authors:

Du Xiong Wang, Rui Zhou, Guo Wang Ding, Cheng Liu*

Keywords:

Cr₂N Nitride, High-Nitrogen Austenitic Steel, Microhardness, Wearing Depth

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