## 3 **Introduction**  
Absorbable alloys are emerging as a promising solution for use in biomedical implants due to their compatibility with the tissue healing process. These alloys are designed to degrade gradually in the body, thus eliminating the need for surgical removal that is typically required with non-absorbable materials. Significant research has been devoted to the development of various absorbable, or biodegradable, metallic alloys, which are engineered to support the healing process while eventually being absorbed by the body [1; 2; 3; 4]. When choosing alloy compositions, it is important to consider biocompatibility requirements. Only those metals whose ions are non-toxic, essential to the organism, or beneficial in the recovery of damaged tissue should be considered for bio implants. Another crucial factor to consider is the body's ability to absorb and excrete ions that result from the corrosion of the alloy's constituent elements. These considerations are vital to minimize any adverse toxicological or pathophysiological effects [1; 2; 3]. As [PERSON] [2] suggests, one of the key research objectives in the field of biomedical devices is to enhance the mechanical properties of these alloys while staying within the biocompatibility constraints. These biocompatibility constraints dictate that the alloys must be designed considering the constituent alloying elements, as well as the insertion rate of their ions into the organism due to the slow corrosion process. An element considered a nutrient, e.g., Fe, can cause harmful effects when it exists in excess in the body. For example, excess iron in the blood can lead to Hemochromatosis, which can cause damage to critical organs such as liver, heart and lungs [5]. In contrast, an element traditionally not considered a nutrient and with known toxicity can be incorporated into alloys used for bioimplants if its release rate in the body is low enough so as not to cause major damage to the patient's health. For example, Ti alloys are well known for their use in bioimplants due to their corrosion resistance; however, studies have indicated that excess levels of Ti can impact organ functionality in humans [6]. Alloys within these constrains can be developed through the adoption of novel alloy compositions as well as by the effective design of the microstructure achieved via careful control of the solidification process [1; 2; 3; 4; 7; 8; 9]. Within the body, alloys undergo corrosion. Therefore, understanding the absorption and elimination capabilities of the body for the different alloy elements is crucial. This knowledge allows us to determine a safe range for ion release from the alloys, ensuring it does not inflict harm on the body [1; 2; 3; 4; 7; 8; 9]. Magnesium (Mg) alloys are attractive in this case due to the body's higher absorption capacity, as evidenced by the relatively high recommended daily Mg dose for an adult (420 mg/day), which is significantly higher than the recommended daily doses for other alloy systems such as iron (Fe, 18 mg/day) and zinc (Zn, 15 mg/day) [7; 10; 11]. Moreover, the relatively low density of Mg alloys, combined with their suitable strength and a Young's modulus that is in the range of that of human bone (40 to 45 GPa), as well as excellent biocompatibility, has made these alloys prime candidates for biomedical applications [10; 12]. Among the elements used for alloying with magnesium (Mg), silicon (Si) is notable for its ability to enhance the mechanical properties of the alloy. [PERSON] et al. [13] found that among the Mg-1 wt.% X alloys (where X represents Si, Al, Ag, In, Sn, Y, and Zr), the addition of 1 wt.% Si was the most effective in increasing yield strength, ultimate tensile strength, and fracture strain in the as-cast condition. This enhancement in mechanical properties was attributed to the formation of fine and evenly distributed Mg\({}_{2}\)Si precipitates [3; 14; 15; 16].