Maraging steel has excellent mechanical properties resulting from the formation of precipitates within the matrix through aging treatment. Maraging steel fabricated by the laser powder bed fusion (LPBF) process is suitable for applications including precise components and optimized design. The anisotropic characteristic, which depends on the stacking direction, affects the mechanical properties. This study aimed to analyze the influence of anisotropy on the wear behavior of maraging steel after aging treatment. The features of additive manufacturing tended to disappear after heat treatment. However, some residual cellular and dendrite structures were observed. In the wear tests, a high wear rate was observed on the building direction plane for all counter materials. This is believed to be because the oxides formed on the wear track positively affected the wear characteristics; meanwhile, the bead shape in the stacking direction surface was vulnerable to wear, leading to significant wear.

1. Introduction 
2. Experimental 
    2.1. 시편 준비 
    2.2. 마모 시험 
3. Results and Discussion 
    3.1. 미세조직 분석 
    3.2. Vickers 경도 분석 
    3.3. 마모 시험 결과 분석 
4. Conclusion 
Conflict of Interest Declaration  
Author Information and Contribution  
Acknowledgement
References

• 임승온(순천대학교 첨단신소재공학과) | Seung On Lim (Department of Advanced Materials Engineering, Sunchon National University, Sunchon 57922, Republic of Korea)
• 신세은(순천대학교 첨단신소재공학과) | Se-Eun Shin (Department of Advanced Materials Engineering, Sunchon National University, Sunchon 57922, Republic of Korea) Corresponding author