Paper Title:
Direct Observation of the Change in Microstructure with Deformation in Ferrous Lath Martensite by Using Micro-Sized Specimen
  Abstract

In the present study, the micro-sized cantilever-beam type specimens containing only one block of lath martensite were fabricated, and change in deformation microstructure inside a block with strain was observed directly by scanning electron microscopy and transmission electron microscopy. A number of slip bands appeared in the fixed end of the specimen by deformation. The propagations of slip bands, however, terminate due to the gradient of strain inside the specimen. The direction of slip bands changed during the propagation by the low angle boundaries inside the block. The shear localized region becomes narrow with an increase in strain. Furthermore, the width of laths increases greatly at the large strain region. The increase in width of laths is attributed to the disappearance of some initial lath boundaries by deformation.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
3514-3519
DOI
10.4028/www.scientific.net/MSF.638-642.3514
Citation
A. Shibata, Y. Ogawa, M. Sone, Y. Higo, "Direct Observation of the Change in Microstructure with Deformation in Ferrous Lath Martensite by Using Micro-Sized Specimen", Materials Science Forum, Vols. 638-642, pp. 3514-3519, 2010
Online since
January 2010
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$32.00
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