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Effect of Mo and Bi Additions on the Microstructure of Zr–Cr–Fe Alloy After β-Quenching

  • Jianmin Wang
  • Baifeng LuanEmail author
  • Korukonda L. Murty
  • Qing LiuEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

This work investigated the solid-states phase transformation behavior of Zr–Cr–Fe alloys during rapid cooling from β-phase region. Scanning electron microscopy (SEM) was used to characterize the microstructure evolution of Zr–Cr–Fe alloys containing different Mo and Bi contents. The results show that two different phase transformation modes were involved during β to α transformation for different domains within prior β grains: (i) Martensitic transformation resulting in lath-shaped grains occured within prior β grain interiors. (ii) Massive transformation generating massive-shaped grains initiated along two adjacent prior β parent grain boundaries. Alpha (α) lath width reduced with increasing Mo concentration while Mo strongly retarded massive phase transformation. Interestingly microstructures exhibited no significant variation in the case of specimens containing different Bi contents irrespective of the phase transformation modes.

Keywords

Martensitic transformation Massive transformation Zr–Cr–Fe alloy Mo and bi 

Notes

Acknowledgements

This study is financially supported by the programs of National Natural Science Foundation of China (51531005, 51421001, 51371202 and 51501021).

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Copyright information

© The Minerals, Metals & Materials Society 2017

Authors and Affiliations

  1. 1.College of Materials Science and EngineeringChongqing UniversityChongqingChina
  2. 2.Department of Nuclear EngineeringNorth Carolina State UniversityRaleighUSA

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