Direct Observation via In Situ Heated Stage EBSD Analysis of Recrystallization of Phosphorous Deoxidised Copper in Unstrained and Strained Conditions

다국어 초록 (Multilingual Abstract)

Recrystallization of phosphorous deoxidised copper used for strength critical applications at elevated temperatures wasinvestigated by means of in situ heated stage EBSD analysis using a Gatan Murano heated stage mounted within a Carl ZeissSigma FEGSEM electron microscope. The influence of applied strain as the result of deformation within a Nakajima testas an analogue for industrial forming on the recrystallization temperature was investigated, the impact of increased heatingrates on microstructural evolution was also investigated. Inverse pole figure plots combined with regions of reduction in localmisorientations and variations in geometrically necessary dislocations were used to establish the point of recrystallizationand the recrystallized fraction of the material. Recrystallization was observed to occur at temperatures as low as 130 °C inhighly strained samples compared to around 300 °C within the annealed samples dependent upon heating rate. Increasedheating rates were observed to produce a finer final grain structure but had little effect on presence of <111> 60° grain twins,which was influenced more by initial material condition.

참고문헌 (Reference)

1 R. D. Doherty, 238 : 219-, 1997

2 V. Y. Gertsman, 42 : 1785-1804, 1994

3 D. P. Field, 55 : 4233-, 2007

4 M. M. Nowell, 467 : 1401-, 2004

5 O. Engler, 205 : 187-, 1996

6 M. Kumar, 48 : 2081-, 2000

7 S.G. Chowdhury, 37A : 2349-, 2006

8 V. Y. Gertsman, 42 : 1785-, 1994

9 V. Y. Gertsman, 11 : 403-, 2003

10 O. V. Mishin, 33 : 5137-, 1998

11 S. Clark, 879 : 356-, 2016

12 S. Jakani, 456 : 261-, 2007

13 T. Baudin, 58 : 947-, 2007

14 D. P. Field, 55 : 4233-, 2007

15 F. Brisset, 19 : 969-, 2013

16 S. Taylor, 48 : 876-, 2017

17 A. Nye, 146 : 308-, 2018

18 J. Humphreys, "Recrystallization and Related Annealing Phenomena" Elsevier 2004

19 L.N. Brewer, "Electron Backscatter Diffraction in Materials Science" Springer 251-, 2009

20 F. Mandigo, "ASM Handbook, Volume 14: Forming and Forging" ASM International 1998