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Effect of In addition on microstructure and mechanical properties of Sn–40Bi alloys

  • Xulei Wu
  • Jiawei Wu
  • Xiaojing WangEmail author
  • Jie Yang
  • Ming Xia
  • Bin LiuEmail author
Metals & corrosion
  • 12 Downloads

Abstract

The effect of In on melting property, microstructure and mechanical properties of Sn–40Bi–xIn (x = 0, 1, 2, 4, 6, 8 wt%, respectively) alloys was investigated by means of differential scanning calorimetry, scanning electron microscope, X-ray diffraction and tensile test. The results show that the solidus temperature and the liquidus temperature decrease with the increase in In content. The 1In, 2In and 4In alloys are composed of Sn–Bi eutectic and β–Sn dendrites with In atoms dissolved, whereas 6In and 8In alloys composed of Sn–Bi eutectics, BiIn–Sn metastable phases, Bi particles and primary β–Sn phases. At room temperature, 6In exhibits the maximum ultimate tensile strength of 77 MPa, while 4In displays a more outstanding elongation rate of 42%. Moreover, 2In alloy exhibits an even outstanding elongation behavior (above 300%) at temperatures of 100 and 120 °C.

Notes

Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51541104, 51402132) and Jiangsu Planning Project of Science and Technology (Grant No. BK20150466).

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Material and Science EngineeringJiangsu University of Science and TechnologyZhenjiangChina
  2. 2.School of Materials Science and EngineeringHarbin Institute of Technology at WeihaiWeihaiChina

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