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Improvement of strength-ductility trade-off in a Sn–0.7Cu–0.2Ni lead-free solder alloys through Al-microalloying
Faculty
Science
Year:
2020
Type of Publication:
ZU Hosted
Pages:
Authors:
Tariq Ahmed Mahmoud Musalmi
Staff Zu Site
Abstract In Staff Site
Journal:
Journal of Materials Science: Materials in Electronics Springer
Volume:
Keywords :
Improvement , strength-ductility trade-off , , Sn–0.7Cu–0.2Ni lead-free solder
Abstract:
The enhancement in strength is generally attended by ductility loss in lead-free solder alloys, which is commonly denoted as strength-ductility trade-off (SDT). This work provides new viewpoint on the design of novel Sn–0.7Cu–0.2Ni (SCN) solders with the notably enhanced SDT, possessing yield stress (YS) of 40.8 MPa, tensile strength (UTS) of 42.9 MPa, and large uniform elongation up to 240%. Such breaking between competing properties of SDT is caused by microstructural modification that comprised with the arrangement of fine and coarse-sized phases in complex heterogeneous microstructures. Toward this end, the heterogeneous structures in SCN solder are produced by Al-microalloying, followed by cold-drawn and temperature-annealing. However, microalloying of 0.1% Al decreases the undercooling of SCN solder while 0.2% Al reduces the eutectic temperature. Our results show that the heterogeneous structure design strategy can offer a new generation of enhanced SDT alloys with boosting elastic compliance and plastic energy chock resistance for mobile products industry.
Author Related Publications
Tariq Ahmed Mahmoud Musalmi, "Optical and radiation shielding features of NiO-CdO-BaO borosilicate glasses", Springer, 2022
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Tariq Ahmed Mahmoud Musalmi, "The Co-precipitated preparation, characterization, and optical investigations of Cu-doped CdO nanomaterials", Springer, 2022
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Tariq Ahmed Mahmoud Musalmi, "Size and Temperature Effect on Electrical Conductivity, Dielectric Properties, and Electrical Switching Memory Application of Nanocrystalline Na-DDQ (Metal-Organic Frameworks) Thin Films", Springer, 2021
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Tariq Ahmed Mahmoud Musalmi, "Enhancement of elastic, optical and opto-electrical properties of Ni-Substituted CoFe2O4 nanoparticles with different concentrations", Springer, 2021
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Tariq Ahmed Mahmoud Musalmi, "Microstructural modifications and properties of low-Ag-content Sn-Ag-Cu solder joints induced by Zn alloying", Elsevier, 2015
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Department Related Publications
Abdullah Fathi Aly Saad, "Ageing effects on polymeric track detectors: studies of etched tracks at nanosize scale using atomic force microscope", RADIATION PHYSICS, 2012
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