Abstract
The structure and properties of Sn-Ag3Sn directionally-frozen eutectic alloys have been examined over the growth range 2×10−4 to 2×10−1 mm sec−1. The structure is predominantly broken lamellar to 1.3×10−2 mm sec−1, but with relatively poor alignment to the growth direction at smaller growth rates. The tensile and compressive strengths were measured. These increase monotonically to the growth rate at which cellular growth ensues, after which point they fall. The hardness of the eutectic closely parallels the compressive properties as the growth rate increases. Quenching from 200° C produces a marked increase in compressive strength and hardness, attributed to the quench-hardening of the Sn-rich phase.
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Bromley, J.F., Vnuk, F. & Smith, R.W. Mechanical properties of Sn-Ag3Sn alloys. J Mater Sci 18, 3143–3153 (1983). https://doi.org/10.1007/BF00700799
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DOI: https://doi.org/10.1007/BF00700799