Paper Title:
Microstructural Observation on Materials of the Japanese Sword under Fold-Forging Process
  Abstract

The Japanese sword is produced from a special kind of steel called tamahagane, using a forge-fold operation repeated several times. The purpose of this study is to clarify the development of microstructures with successive forge-fold operations using tamahagane. Specimens under several stages of sword making have been investigated with optical microscopy, scanning electron microscopy and electron probe micro analysis methods. Microstructures have been found to be a combination of ferrite and pearlite with a lot of nonmetallic inclusions. The ferrite bands become finer and among other inclusions Fe2SiO4 takes a spherical shape with increasing recurrence of forge-fold operations.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
134-137
DOI
10.4028/www.scientific.net/MSF.654-656.134
Citation
G. Takami, T. Ohba, S. Morito, A. K. Das, "Microstructural Observation on Materials of the Japanese Sword under Fold-Forging Process ", Materials Science Forum, Vols. 654-656, pp. 134-137, 2010
Online since
June 2010
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Price
$32.00
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