Wear properties of Fe-16Mn-10Al-5Ni-0.86C lightweight steel manufactured by laser powder bed fusion

ABSTRACT

Microstructural characteristics and wear properties of Fe-16Mn-10Al-5Ni-0.86C lightweight steel (LWS) manufactured by laser powder bed fusion (LPBF) process were investigated and compared with conventional LWS. Both LWS alloys constituted an austenite matrix and B2-IMC. The LPBF LWS sample showed polygonal-typed B2-IMC, whereas conventional LWS had rod-typed B2-IMC. The ball-on-disk method was used to perform a wear test at 25°C under three different load conditions of 20N, 3N and 40N. The wear results indicated that the LPBF LWS sample exhibited a similar amount of wear loss under the 20N and 30N load conditions, but it showed better wear resistance under the 40N compared to conventional LWS. After the wear test, the abrasive wear behaviour was confirmed as the main wear mechanism in both LWSs. The formation of oxide layers and debris was analysed through observation of the cross-sectional area of the worn surface.

KEYWORDS:

• Lightweight steel
• austenitic duplex steel
• additive manufacturing
• laser powder bed fusion
• wear

Disclosure statement

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

Additional information

Funding

This work was supported by National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST) [grant number NRF-2022R1A2C3006964].

Notes on contributors

Tae-Hoon Kang

Tae-Hoon Kang: Ph. D candidate in Prof. Kee-Ahn Lee's research group.

Amol B. Kale

Amol B. Kale: Post Doc. in Prof. Kee-Ahn Lee's research group.

Han-Soo Kim

Han-Soo Kim: Research Prof. of the Institute for High Technology Materials and Devidces, Korea University.

Kee-Ahn Lee

Kee-Ahn Lee: The Prof. of Inha University in Department of Materials Science and Engineering.