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Home  >  Journal list  >  MATERIALS TRANSACTIONS  >  Vol.43  No.8 (2002)  >  pp.2044-2045

MATERIALS TRANSACTIONS
<<Previous article Vol.43  No.8 (2002)   pp.2044 - 2045 Next article>>

A Study of Local Nanocrystalline Structure of 0Cr16Ni22Mo2Ti Steel in Bond Area of Flash Welding

Zhang Fucheng1), Zhang Ming1) and Li Jianhui1)
1) College of Materials Science and Engineering, Yanshan University

A nanocrystalline layer was fabricated in bond area of 0Cr16Ni22Mo2Ti steel using flash welding. The average grain size near bond line is about 30 nm and the farther the distance from the bond line, the larger the size of the nanocrystallites. The thickness of the nanocrystalline layer is about 80 \micron. The formation mechanism of the nanocrystallites may be that the metal in liquid state in the bond area is solidified under both high undercooling and high density d.c. electric current that can refine the microstructure of metal solidification.


Keyword:
nanocrystalline, high undercooling, high-density electric current, steel

Received: March 18, 2002
Accepted: May 13, 2002 , Published online: September 06, 2005
Copyright (c) 2005 The Japan Institute of Metals

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