Measurement and prediction of Young's modulus of a Pb-free solder

Nikhilesh Chawla, F. Ochoa, V. V. Ganesh, X. Deng, M. Koopman, K. K. Chawla, S. Scarritt

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Accurate and reproducible measurements of the Young's modulus of solders are complicated by the early onset of yielding, microporosity, and variations in cooling rate. In this study, we report measurements of Young's modulus of an Sn-3.5 wt % Ag solder by two techniques: (a) loading-unloading measurements in tension, and (b) non-destructive resonant ultrasound spectroscopy. Both techniques yielded similar values of Young's modulus. The modulus decreased with increasing microporosity, in accordance with predicted values. Cooling rate affected the Ag3Sn intermetallic morphology, but not Young's modulus since the distribution of the particles was relatively random. This result was confirmed by microstructure-based finite element modeling.

Original languageEnglish (US)
Pages (from-to)385-388
Number of pages4
JournalJournal of Materials Science: Materials in Electronics
Volume15
Issue number6
DOIs
StatePublished - Jun 2004

Fingerprint

Elastic Modulus
solders
modulus of elasticity
Elastic moduli
microporosity
Microporosity
predictions
Soldering alloys
Cooling
cooling
unloading
Unloading
Intermetallics
intermetallics
Spectrum Analysis
Ultrasonics
Spectroscopy
microstructure
Microstructure
Lead-free solders

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Materials Science(all)
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Measurement and prediction of Young's modulus of a Pb-free solder. / Chawla, Nikhilesh; Ochoa, F.; Ganesh, V. V.; Deng, X.; Koopman, M.; Chawla, K. K.; Scarritt, S.

In: Journal of Materials Science: Materials in Electronics, Vol. 15, No. 6, 06.2004, p. 385-388.

Research output: Contribution to journalArticle

Chawla, Nikhilesh ; Ochoa, F. ; Ganesh, V. V. ; Deng, X. ; Koopman, M. ; Chawla, K. K. ; Scarritt, S. / Measurement and prediction of Young's modulus of a Pb-free solder. In: Journal of Materials Science: Materials in Electronics. 2004 ; Vol. 15, No. 6. pp. 385-388.
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