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Journal of Materials Engineering and Performance

, Volume 24, Issue 10, pp 4022–4031 | Cite as

Analysis of In Situ Mechanical Properties of Phases in High-Alloyed White Iron Measured by Grid Nanoindentation

  • Ling ChenEmail author
  • Jan Eric Ståhl
  • Jinming Zhou
Article

Abstract

The paper presents an analysis of the in situ mechanical properties (e.g., hardness, elastic modulus, and volume fraction) of phases in high-alloy white iron measured by grid nanoindentation statistically, to reveal the contributions of individual phase properties to the global properties of the material. The in situ mechanical properties of phases measured by grid indentation were validated through targeted indentation. Gaussian and Weibull mixture models were used in analyzing the grid nanoindentation measurements to assess the goodness-of-fit of the indentation data. The nanohardness and indentation modulus measured by grid nanoindentation were directly correlated to the microstructural characteristics of the sample materials. The statistical analysis results were also compared with the mechanical properties and volume fractions obtained using targeted indentation and quantitative metallography based on microstructure analysis to validate the statistical results. The influences of heat treatment on the microstructure, hardness, and elastic modulus of individual phases in the material are also discussed.

Keywords

high-alloy white iron mechanical properties nanoindentation statistics 

Notes

Acknowledgments

This research is part of the strategic research program, the Sustainable Production Initiative—SPI, a cooperative effort of Lund University and Chalmers University of Technology. The authors would like to thank Xylem Water Solution AB for providing the experimental materials and support.

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Copyright information

© ASM International 2015

Authors and Affiliations

  1. 1.Division of Production and Materials EngineeringLund UniversityLundSweden

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