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Effects of Changing Hot Rolling Direction on Microstructure, Texture and Mechanical Properties of Cu-2.7Be Sheets

  • Daibo Zhu
  • Chuming Liu
  • Haijun Yu
  • Tan Han
Article
  • 62 Downloads

Abstract

A hot rolling scheme (cross-rolling and unidirectional rolling) was adopted to process Cu-2.7Be sheets used as multiplier dynodes in photomultiplier. The effects of changing rolling direction on microstructure, texture and mechanical properties were studied by a combination of XRD, EBSD and TEM. It was found that higher copper-type texture and lower brass texture intensity were obtained in the ultimately cross-rolling (CR) sheet compared with the unidirectional rolling (UR) sheet.The EBSD results indicated that the grain orientation from mainly \(\left\langle {101} \right\rangle\) for UR sample turns to random for CR sample. Great enhancements in YS and UTS after unidirectional rolling were attributed to the massive and polygonal γ precipitates. The CR sample exhibited lower anisotropy, because of the increase of S and γ precipitates with spherical and tiny shape.

Keywords

copper alloys EBSD hot rolling TEM texture analysis XRD 

Notes

Acknowledgments

This work was financially supported by the International S & T Cooperation Program of China (ISTCP). We specially appreciate the help of Professor Daoyun Ding and Bei Tang.

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Copyright information

© ASM International 2018

Authors and Affiliations

  1. 1.School of Materials Science and TechnologyCentral South UniversityChangshaChina
  2. 2.School of Mechanical EngineeringXiangtan UniversityXiangtanChina

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