Abstract
In the current work, applying a rotating magnetic field (RMF) is an innovative approach to improve the microstructure features and creep resistance of Sn-2.0Ag-2.0Zn (SAZ) alloy. The results revealed that RMF does not change intermetallic compounds (IMCs) constituents furthermore SAZ alloy with applying a magnetic field (SAZ-B) exhibited microstructure refinement and homogeneous distribution of IMCs. Moreover, SAZ-B displayed more creep resistance (∼366%) and greater creep rupture time (∼56.4%) than those of SAZ alloy. These results have great implications in improving the alloy’s performance for industrial applications.
Highlights
Due to the environmental and human health problems regarding the inherent toxicity of Pb-containing solders, the use of Pb has been forbidden in the microelectronics industry, water piping, cans of food and beverage, and automotive products in the last decade [1,2,3,4,5]
The concentrations of Sn, Ag and Zn are markedly different in the examined alloys. β-Sn bodycentered tetragonal phase was identified with high intensity because of the high Sn concentration
Ag3Sn, AgZn, and Ag5Zn8 intermetallic compounds (IMCs) were detected with small diffraction patterns because of their low concentrations in the selected lead-free solder (LFS) alloys
Summary
Due to the environmental and human health problems regarding the inherent toxicity of Pb-containing solders, the use of Pb has been forbidden in the microelectronics industry, water piping, cans of food and beverage, and automotive products in the last decade [1,2,3,4,5]. The complete implementation of novel LFS involves thorough knowledge and understanding of their microstructure, mechanical, and wettability From this motivation, scientists strive to produce novel LFS systems that are identical or superior to the conventional Pb-Sn solder alloy. The presence of the coarse Ag3Sn particle contributes to the nucleation of microcracks induced by the decohesion along with the matrix, which can speed up the failure process and harms the reliability [11, 12]. To solve these drawbacks and develop LFS reliability, adding minor alloying elements is one of the potential approaches [13, 14]. Adding Zn >1% worsens the mechanical properties [16]
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