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Strength Variability in Silicon-Disilicide Eutectic Alloys

  • Srikant GollapudiEmail author
Technical Paper
  • 13 Downloads

Abstract

Silicon-disilicide eutectic alloys have recently been evaluated as potential structural materials with improved combinations of hardness, toughness and wear resistance as compared to either of their constituent phases. Here, compression tests were carried out on Si, Si–7V, Si–20Cr and Si–13.9Cr–3.4V (in wt%) alloys, wherein Si–7V, Si–20Cr and Si–13.9Cr–3.4V exhibited silicon-disilicide eutectic structures. Strength variability was ascertained via a Weibull analysis, with the ternary alloy Si–13.9Cr–3.4V yielding a Weibull modulus value of 15.2 as compared to 4.6 for Si. Scanning electron microscopy studies provided some insight on the fracture strength and Weibull modulus of these materials.

Keywords

Silicon Eutectics Weibull modulus 

Notes

Acknowledgements

The author is grateful to Prof. Christopher Schuh at MIT for his encouragement and guidance during the course of this work.

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Copyright information

© The Indian Institute of Metals - IIM 2019

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringMassachusetts Institute of TechnologyCambridgeUSA
  2. 2.School of Minerals, Metallurgical and Materials EngineeringIndian Institute of Technology BhubaneswarBhubaneswarIndia

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