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Improvement of strength-ductility trade-off in a Sn–0.7 Cu–0.2 Ni lead-free solder alloys through Al-microalloying
Faculty
Science
Year:
2020
Type of Publication:
ZU Hosted
Pages:
2633–2641
Authors:
Mahmoud Suleiman Mohammed Dawood
Staff Zu Site
Abstract In Staff Site
Journal:
Journal of Electronic Materials Springer
Volume:
31
Keywords :
Improvement , strength-ductility trade-off , , Sn–0.7 Cu–0.2 , lead-free
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
Mahmoud Suleiman Mohammed Dawood, "Effect of ambient gas pressure and nature on the temporal evolution of aluminum laser-induced plasmas", American institute of physics, 2014
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Mahmoud Suleiman Mohammed Dawood, "Influence of surrounding gas, composition and pressure on plasma plume dynamics of nanosecond pulsed laser-induced aluminum plasmas", American institute of physics, 2015
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Mahmoud Suleiman Mohammed Dawood, "Generation of Nanosized Particles during Mechanical Alloying and Their Evolution through the Hot Extrusion Process in Bismuth-Telluride-Based Alloys", Springer US, 2010
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Mahmoud Suleiman Mohammed Dawood, "Axial-and radial-resolved electron density and excitation temperature of aluminum plasma induced by nanosecond laser: Effect of the ambient gas composition and pressure", AIP Publishing, 2015
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Mahmoud Suleiman Mohammed Dawood, "Structural and opto-electrical characterization of sodium-2, 3-dicyano-5, 6-dichloro-1, 4-benzo-quinone (Na-DDQ) as complex thin films", Elsevier, 2019
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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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Ahmed Elfalaky Elsaid Abdelrehim, "Spectroscopic and physical measurements on charge-transfer complexes: Interactions between norfloxacin and ciprofloxacin drugs with picric acid and 3,5-dinitrobenzoic acid acceptors", Englabd, 2011
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Ahmed Elfalaky Elsaid Abdelrehim, "Bone-like Material, Synthesis, Optimization and Characterization", America, 2014
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Ahmed Elfalaky Elsaid Abdelrehim, "Structural and electrical properties of HgTe thin films", england, 2000
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