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contributor authorZ. Mei
contributor authorM. C. Shine
contributor authorJ. W. Morris
date accessioned2017-05-08T23:35:18Z
date available2017-05-08T23:35:18Z
date copyrightJune, 1991
date issued1991
identifier issn1528-9044
identifier otherJEPAE4-26122#109_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/108393
description abstractThe creep behavior of air-cooled and liquid nitrogen-quenched soldered joints of 60/40 Sn-Pb at 65°C has been studied. The stress exponent, n, in the power law, γ̇ (steady state strain rate) ∝σn (applied stress), changes from a value of about 6 to values of 2 to 3, as γ̇ decreases below 10−4 in/in per second. This result, combined with the authors’ previous stepped load creep test results, indicates a transition of the creep deformation mechanism from conventional dislocation climb to superplastic grain boundary sliding. The superplastic creep of the soldered joints is ascribed to their non-lamellar microstructure due to their fast cooling rate. During creep deformation, recrystallization of the soldered joints occurs, causing softening.
publisherThe American Society of Mechanical Engineers (ASME)
titleSuperplastic Creep of Eutectic Tin-Lead Solder Joints
typeJournal Paper
journal volume113
journal issue2
journal titleJournal of Electronic Packaging
identifier doi10.1115/1.2905375
journal fristpage109
journal lastpage114
identifier eissn1043-7398
keywordsCreep
keywordsSuperplasticity
keywordsSolder joints
keywordsStress
keywordsDislocations
keywordsNitrogen
keywordsCooling
keywordsGrain boundaries
keywordsRecrystallization
keywordsSteady state AND Mechanisms
treeJournal of Electronic Packaging:;1991:;volume( 113 ):;issue: 002
contenttypeFulltext


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