Mechanical Characterisation of Cast Sn-xFeo-0.2Cu Solder Alloy
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Date
2017
Authors
Sekunowo, O.I.
Durowaye, S.I.
Runsewe, A.M.
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of Engineering Research.
Abstract
The act of soldering that is devoid of any debilitating health hazards is a global concern necessitating the
development of varied lead-free solders exhibiting desirable solderability. In this study, a lead-free solder
composed of tin-iron millscale-copper (Sn-FeO-0.2Cu) alloy was fabricated by casting and characterised
for mechanical properties critical to its functionality. The used iron millscale (IMS) was varied from 1-5
wt.%. The cast alloy samples were evaluated for microstructure and mechanical properties (elastic
modulus, yield strength, ultimate tensile strength and hardness) using optical microscope and relevant
state of the arts mechanical characterisation tools respectively. Results showed that the mechanical
properties of the fabricated solders compared favourably with standard solders. This could be attributed
to the coherency of IMS with the tin matrix on one hand and the role of dislocation motion impediment
played by the Fe-Cu intermetallic formed within the relatively soft tin matrix on the other. The solder
melted in the range of 245-255 0C suggesting its suitability for soldering electric motors, car radiators and
other high melting point (HMP) soldering.
Description
Keywords
Copper-tin, iron-millscale, lead-free, microstructure
Citation
Sekunowo, O.I.; Durowaye, S.I.; Runsewe, A.M. (2017). Mechanical Characterisation of Cast Sn-xFeo-0.2Cu Solder Alloy. Journal of Engineering Research; 22(2): 14-22