## 1 Introduction
[13] investigated the manufacturing and finishing of aerospace-grade superalloys, focusing on the fabrication of MA956 (an oxide dispersion strengthened--ODS--alloy) via SLM and its surface finishing using MAF. Optimal SLM processing parameters, such as laser power and scan speed, were developed to ensure high relative density (\(\sim\)99.9%) and moderate surface roughness. However, due to the initially high roughness (\(\sim\)23 \(\upmu\)m), the effective application of MAF required prior grinding of the samples, as excessive surface irregularities impeded the tool's ability to polish efficiently. The study examined the influence of initial roughness, iron particle size, and abrasive characteristics on the efficiency of MAF. It was shown that the effectiveness of the process heavily depends on the quality of the initial surface--MAF performs best when the abrasive particle size is comparable to the average peak height (Rp) and the total profile height (Rc). Under optimal conditions, a surface roughness of Ra = 0.36 \(\upmu\)m was achieved (a reduction of 76.4%), confirming the efficacy of MAF for finishing additively manufactured metals, provided adequate pre-processing is performed. These findings align with observations for 316L stainless steel produced via PBF-LB, where MAF not only effectively reduced surface roughness--from values exceeding 100 \(\upmu\)m down to as low as 0.1 \(\upmu\)m--but also induced beneficial compressive residual stresses. As shown in the experimental study by [PERSON] et al. [14], when magnetic field-assisted polishing (MAP) was applied using a mixture of magnetic and abrasive particles, the surface, which initially exhibited tensile residual stresses, developed mild compressive stresses after prolonged processing. However, when magnetic field-assisted burnishing (MAB) was employed, substituting conventional abrasives with hard steel balls (SUJ2, 850 HV), the resulting compressive residual stress was significantly higher--exceeding 200 MPa in the part-build direction and 100 MPa in the laser scanning direction after 3 h of treatment. These changes occurred without measurable material removal, indicating that surface plastic deformation--not abrasion--was responsible for the stress transformation. According to a broader synthesis by [PERSON] et al. [15], such stress conversion from tensile to compressive is highly desirable for improving the fatigue life and structural reliability of AM parts. The extent of transformation depends on factors like particle type, processing time, clearance, and the dynamic characteristics of the magnetic tool. Hence, MAF serves as a flexible tool that, depending on implementation, can both finish the surface and tailor its mechanical state via stress redistribution. MAF is an advanced surface finishing process that, as noted in the literature [16], offers a range of advantages and limitations:  
Advantages of MAF:  
* High precision and the ability to achieve nano-level surface finishes;
* Applicability to a wide variety of shapes and materials;
* Low risk of surface damage (e.g., microcracks or thermal degradation);
* Environmentally benign options (especially in chemical-free variants);
* Potential for process automation. Limitations of MAF:  
* Low processing efficiency (typically time-consuming);
* Lack of standardized processing parameters;
* High costs associated with abrasives and working fluids;
* Challenges in uniformly finishing complex geometries (particularly in maintaining a constant working gap). MAF remains a promising technique, particularly in the context of precise, sustainable, and automated surface finishing [17]. However, its broader industrial implementation is still constrained by the limited availability of comprehensive studies addressing the specific challenges posed by additive manufacturing (AM) components.