Improvement in the mechanical properties of eutectic Sn58Bi alloy by 0.5 and 1 wt% Zn addition before and after thermal aging

Shiqi Zhou, Omid Mokhtari, Muhammad Ghufran Rafique, Vasanth C. Shunmugasamy, Bilal Mansoor, Hiroshi Nishikawa

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

A comparative analysis of the microstructure and the mechanical properties of the eutectic Sn58Bi, 0.5 wt% and 1 wt% zinc (Zn)-functionalized Sn58Bi alloys was conducted before and after solid-state thermal aging. Cross-sectional microstructure observation and tensile tests were performed on bulk solder alloys. The fracture surfaces were observed after the tensile tests. In addition, the mechanical properties of individual Sn and Bi phases were obtained using nanoindentation tests. The results indicated that finer microstructures were obtained in the Zn-added samples compared to the eutectic Sn58Bi before and after aging since the Sn–Bi phase boundary segregation of Zn occurred during aging, and the movement of the diffusion entities (Sn and Bi atoms) through the boundaries was obstructed. The fine microstructure was responsible for the ultimate tensile strength improvement obtained in the Zn-added samples. Meanwhile, a significant hardness decrease of the Sn phase in the Sn58Bi1Zn alloy was believed to be a possible reason for the superior elongation of the Zn-added samples.

Original languageEnglish
Pages (from-to)1243-1252
Number of pages10
JournalJournal of Alloys and Compounds
Volume765
DOIs
Publication statusPublished - 15 Oct 2018

Fingerprint

Thermal aging
Eutectics
Zinc
Mechanical properties
Microstructure
Aging of materials
Phase boundaries
Nanoindentation
Soldering alloys
Elongation
Tensile strength
Hardness
Atoms

Keywords

  • Nanoindentation
  • Phase boundary
  • Sn58Bi
  • Solid solute softening
  • Tensile test
  • Zinc

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Improvement in the mechanical properties of eutectic Sn58Bi alloy by 0.5 and 1 wt% Zn addition before and after thermal aging. / Zhou, Shiqi; Mokhtari, Omid; Rafique, Muhammad Ghufran; Shunmugasamy, Vasanth C.; Mansoor, Bilal; Nishikawa, Hiroshi.

In: Journal of Alloys and Compounds, Vol. 765, 15.10.2018, p. 1243-1252.

Research output: Contribution to journalArticle

Zhou, Shiqi ; Mokhtari, Omid ; Rafique, Muhammad Ghufran ; Shunmugasamy, Vasanth C. ; Mansoor, Bilal ; Nishikawa, Hiroshi. / Improvement in the mechanical properties of eutectic Sn58Bi alloy by 0.5 and 1 wt% Zn addition before and after thermal aging. In: Journal of Alloys and Compounds. 2018 ; Vol. 765. pp. 1243-1252.
@article{18bd9962d38a47f4badfac86cf5c5d3a,
title = "Improvement in the mechanical properties of eutectic Sn58Bi alloy by 0.5 and 1 wt{\%} Zn addition before and after thermal aging",
abstract = "A comparative analysis of the microstructure and the mechanical properties of the eutectic Sn58Bi, 0.5 wt{\%} and 1 wt{\%} zinc (Zn)-functionalized Sn58Bi alloys was conducted before and after solid-state thermal aging. Cross-sectional microstructure observation and tensile tests were performed on bulk solder alloys. The fracture surfaces were observed after the tensile tests. In addition, the mechanical properties of individual Sn and Bi phases were obtained using nanoindentation tests. The results indicated that finer microstructures were obtained in the Zn-added samples compared to the eutectic Sn58Bi before and after aging since the Sn–Bi phase boundary segregation of Zn occurred during aging, and the movement of the diffusion entities (Sn and Bi atoms) through the boundaries was obstructed. The fine microstructure was responsible for the ultimate tensile strength improvement obtained in the Zn-added samples. Meanwhile, a significant hardness decrease of the Sn phase in the Sn58Bi1Zn alloy was believed to be a possible reason for the superior elongation of the Zn-added samples.",
keywords = "Nanoindentation, Phase boundary, Sn58Bi, Solid solute softening, Tensile test, Zinc",
author = "Shiqi Zhou and Omid Mokhtari and Rafique, {Muhammad Ghufran} and Shunmugasamy, {Vasanth C.} and Bilal Mansoor and Hiroshi Nishikawa",
year = "2018",
month = "10",
day = "15",
doi = "10.1016/j.jallcom.2018.06.121",
language = "English",
volume = "765",
pages = "1243--1252",
journal = "Journal of Alloys and Compounds",
issn = "0925-8388",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Improvement in the mechanical properties of eutectic Sn58Bi alloy by 0.5 and 1 wt% Zn addition before and after thermal aging

AU - Zhou, Shiqi

AU - Mokhtari, Omid

AU - Rafique, Muhammad Ghufran

AU - Shunmugasamy, Vasanth C.

AU - Mansoor, Bilal

AU - Nishikawa, Hiroshi

PY - 2018/10/15

Y1 - 2018/10/15

N2 - A comparative analysis of the microstructure and the mechanical properties of the eutectic Sn58Bi, 0.5 wt% and 1 wt% zinc (Zn)-functionalized Sn58Bi alloys was conducted before and after solid-state thermal aging. Cross-sectional microstructure observation and tensile tests were performed on bulk solder alloys. The fracture surfaces were observed after the tensile tests. In addition, the mechanical properties of individual Sn and Bi phases were obtained using nanoindentation tests. The results indicated that finer microstructures were obtained in the Zn-added samples compared to the eutectic Sn58Bi before and after aging since the Sn–Bi phase boundary segregation of Zn occurred during aging, and the movement of the diffusion entities (Sn and Bi atoms) through the boundaries was obstructed. The fine microstructure was responsible for the ultimate tensile strength improvement obtained in the Zn-added samples. Meanwhile, a significant hardness decrease of the Sn phase in the Sn58Bi1Zn alloy was believed to be a possible reason for the superior elongation of the Zn-added samples.

AB - A comparative analysis of the microstructure and the mechanical properties of the eutectic Sn58Bi, 0.5 wt% and 1 wt% zinc (Zn)-functionalized Sn58Bi alloys was conducted before and after solid-state thermal aging. Cross-sectional microstructure observation and tensile tests were performed on bulk solder alloys. The fracture surfaces were observed after the tensile tests. In addition, the mechanical properties of individual Sn and Bi phases were obtained using nanoindentation tests. The results indicated that finer microstructures were obtained in the Zn-added samples compared to the eutectic Sn58Bi before and after aging since the Sn–Bi phase boundary segregation of Zn occurred during aging, and the movement of the diffusion entities (Sn and Bi atoms) through the boundaries was obstructed. The fine microstructure was responsible for the ultimate tensile strength improvement obtained in the Zn-added samples. Meanwhile, a significant hardness decrease of the Sn phase in the Sn58Bi1Zn alloy was believed to be a possible reason for the superior elongation of the Zn-added samples.

KW - Nanoindentation

KW - Phase boundary

KW - Sn58Bi

KW - Solid solute softening

KW - Tensile test

KW - Zinc

UR - http://www.scopus.com/inward/record.url?scp=85049618604&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049618604&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2018.06.121

DO - 10.1016/j.jallcom.2018.06.121

M3 - Article

VL - 765

SP - 1243

EP - 1252

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

SN - 0925-8388

ER -