Accession Number : ADA621850


Title :   Microstructurally Adaptive Constitutive Relations and Reliability Assessment Protocols for Lead Free Solder


Descriptive Note : Final rept. 2010-2015


Corporate Author : STATE UNIV OF NEW YORK AT BINGHAMTON


Personal Author(s) : Borgesen, Peter


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a621850.pdf


Report Date : 05 May 2015


Pagination or Media Count : 169


Abstract : A systematic study of the formation and evolution of realistic lead free solder microstructure and the associated deformation properties led to a general materials science based understanding and the development of constitutive laws for selected alloys. A range of different testing of both assemblies and individual solder joints provides for correlations with the microstructure and the definition of different damage functions for isothermal and thermal cycling. Experiments were conducted to ensure the applicability of these functions under typical service conditions.


Descriptors :   *CONSTITUTIVE PROPERTIES , *MICROSTRUCTURE , *SOLDERED JOINTS , *SOLDERING ALLOYS , ADAPTIVE SYSTEMS , COOLING , COPPER , CREEP , DAMAGE , DEFORMATION , FRACTURE(MECHANICS) , MODELS , MORPHOLOGY , NUCLEATION , RELIABILITY , SILVER , SOLIDIFICATION , TEST AND EVALUATION , TIN


Subject Categories : Properties of Metals and Alloys
      Crystallography
      Solid State Physics


Distribution Statement : APPROVED FOR PUBLIC RELEASE