The dynamic and static mechanical characteristics of Sn-7Zn-based solder alloy modified with microalloying of In, Fe and Co elements

Abstract Tensile creep experiments and pulse-echo overlap (PEO) method were utilized to analyze the impact of small additions 2.5%wt In, Fe Co (0.1%wt for each) on resistance elastic properties a cast Sn-7Zn alloy. The In-modified alloy displays noticeably enhanced increased fracture time (~ 2.7 times) due precipitation strengthening formation γ-InSn 4 particles. exhibits an as-solidified grain structure, which is finer than alloy, predicted enhance deformation by lattice self-diffusion creep. Nonetheless, deteriorates after addition, highlighting excellent coarsening new γ-Zn 21 5 , γ-Co 2 Sn Zn, α-Fe 0.92 0.08 precipitates. obtained results implied that strain rate follows Garofalo hyperbolic sine equation, computed stress exponent consistent with climb-controlled dislocation Consequently, all PEO tests, values resulting Young's modulus (E) (66.7 GPa) shear (G) (20.5 superior those conventional plain modified in its condition.