Electron backscatter diffraction analysis of Nb3Al multifilamentary strands prepared by rapid heating, quenching and transformation annealing

To enhance the non-Cu critical current density Jc at 15 T and 4.2 K (1000 A mm - 2 at present) we have endeavoured to refine the grain size of rapid heating, quenching and transformation (RHQT)-processed Nb3Al. In the present study, the grain boundary structures of RHQT-processed Nb3Al were examined...

Full description

Saved in:
Bibliographic Details
Published in:Superconductor science & technology 2010-12, Vol.23 (12), p.125001-125001
Main Authors: Takeuchi, T, Tsuchiya, K, Saeda, M, Banno, N, Kikuchi, A, Iijima, Y
Format: Article
Language:English
Subjects:
Applied sciences
Electrical engineering. Electrical power engineering
Electron back scatter diffraction
Exact sciences and technology
Filaments
Grain size
Grain size distribution
Grains
Heating
Materials
Quenching
Transformations
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:To enhance the non-Cu critical current density Jc at 15 T and 4.2 K (1000 A mm - 2 at present) we have endeavoured to refine the grain size of rapid heating, quenching and transformation (RHQT)-processed Nb3Al. In the present study, the grain boundary structures of RHQT-processed Nb3Al were examined by electron backscatter diffraction (EBSD) because transgranular fracture prevents the observation of fractured cross sections of Nb3Al to statistically determine the grain size. The grain size distributions of body-centred-cubic supersaturated-solid-solution Nb(Al)ss and A15 Nb3Al filaments were measured for grains misoriented by more than 2 degree , 5 degree and 15 degree . A mixed grain structure, which consists of a few large grains (>25 mu m) and many small grains (
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/23/12/125001