Relationship of Mechanical and Micromechanical Properties with Microstructural Evolution of Sn-3.0Ag-0.5Cu (SAC305) Solder Wire Under Varied Tensile Strain Rates and Temperatures

Izhan Abdullah, Muhammad Nubli Zulkifli, Azman Jalar @ Jalil, Roslina Ismail, Mohd Arrifin Ambak

Research output: Contribution to journalArticle

Abstract

A characterization of mechanical and micromechanical properties of SAC305 solder wire under varied strain rates and temperatures was performed using tensile and nanoindentation tests. The evolution of SAC305 lead-free solder wire grains was compared in samples that were subjected to various strain rates and temperatures using tensile tests based on ASTM E12 standards. Different behaviours of mechanical properties, micromechanical properties, and microstructure evolution of SAC305 solder wire were observed when either temperature or strain rate was held constant and the other varied. Both tensile and nanoindentation tests produced qualitative results, such as dynamic recovery and occurrence of pop-in events, that reflected changes of microstructure. It was observed that some of the mechanical properties of SAC305 solder wire, namely yield strength (YS), ultimate tensile strength (UTS) and Young’s modulus, showed the same trends, but with lower values, compared to micromechanical properties obtained from nanoindentation tests based upon hardness and reduced modulus. Microstructure examination further confirms that the YS, UTS and hardness values increase with more solder wire grain refinement. SAC305 solder wire also maintained an equiaxed structure under various strain rates and temperatures.

Original languageEnglish
JournalJournal of Electronic Materials
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Tensile strain
Microstructural evolution
solders
Soldering alloys
strain rate
Strain rate
wire
Wire
mechanical properties
Nanoindentation
tensile tests
nanoindentation
yield strength
Temperature
tensile strength
microstructure
Microstructure
temperature
Yield stress
Tensile strength

Keywords

  • Lead-free solder SAC305
  • mechanical properties
  • micromechanical properties
  • microstructure
  • nanoindentation
  • tensile test

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

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title = "Relationship of Mechanical and Micromechanical Properties with Microstructural Evolution of Sn-3.0Ag-0.5Cu (SAC305) Solder Wire Under Varied Tensile Strain Rates and Temperatures",
abstract = "A characterization of mechanical and micromechanical properties of SAC305 solder wire under varied strain rates and temperatures was performed using tensile and nanoindentation tests. The evolution of SAC305 lead-free solder wire grains was compared in samples that were subjected to various strain rates and temperatures using tensile tests based on ASTM E12 standards. Different behaviours of mechanical properties, micromechanical properties, and microstructure evolution of SAC305 solder wire were observed when either temperature or strain rate was held constant and the other varied. Both tensile and nanoindentation tests produced qualitative results, such as dynamic recovery and occurrence of pop-in events, that reflected changes of microstructure. It was observed that some of the mechanical properties of SAC305 solder wire, namely yield strength (YS), ultimate tensile strength (UTS) and Young’s modulus, showed the same trends, but with lower values, compared to micromechanical properties obtained from nanoindentation tests based upon hardness and reduced modulus. Microstructure examination further confirms that the YS, UTS and hardness values increase with more solder wire grain refinement. SAC305 solder wire also maintained an equiaxed structure under various strain rates and temperatures.",
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author = "Izhan Abdullah and Zulkifli, {Muhammad Nubli} and {Jalar @ Jalil}, Azman and Roslina Ismail and Ambak, {Mohd Arrifin}",
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AU - Ismail, Roslina

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N2 - A characterization of mechanical and micromechanical properties of SAC305 solder wire under varied strain rates and temperatures was performed using tensile and nanoindentation tests. The evolution of SAC305 lead-free solder wire grains was compared in samples that were subjected to various strain rates and temperatures using tensile tests based on ASTM E12 standards. Different behaviours of mechanical properties, micromechanical properties, and microstructure evolution of SAC305 solder wire were observed when either temperature or strain rate was held constant and the other varied. Both tensile and nanoindentation tests produced qualitative results, such as dynamic recovery and occurrence of pop-in events, that reflected changes of microstructure. It was observed that some of the mechanical properties of SAC305 solder wire, namely yield strength (YS), ultimate tensile strength (UTS) and Young’s modulus, showed the same trends, but with lower values, compared to micromechanical properties obtained from nanoindentation tests based upon hardness and reduced modulus. Microstructure examination further confirms that the YS, UTS and hardness values increase with more solder wire grain refinement. SAC305 solder wire also maintained an equiaxed structure under various strain rates and temperatures.

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