Paper Title:
Ductility of Bulk Nanocrystalline and Ultrafine Grain Iron and Steel
  Abstract

This paper reviews the ductility of nanostructured and ultrafine iron obtained using a variety of methods. Mechanical milling of powder and subsequent hot consolidation, one of the most popular methods offer high mechanical strength but poor ductility. Improvements made in the consolidation processes and the introduction of final heat treatments, in addition to new approaches such as spark plasma sintering and high pressure torsion, have increased the total plastic strain of nanostructured iron. The development of bimodal structures enables the existence of strain hardening and more uniform deformation. The paper also includes a steel study, which finds that the hardness of milled powder and the role of carbon atoms inside ferrite grains make it more difficult to improve the ductility of nanostructured samples.

  Info
Periodical
Materials Science Forum (Volumes 633-634)
Edited by
Yonghao Zhao and Xiaozhou Liao
Pages
197-203
DOI
10.4028/www.scientific.net/MSF.633-634.197
Citation
J. A. Benito, R. Tejedor, R. Rodríguez-Baracaldo, J. M. Cabrera, J. M. Prado, "Ductility of Bulk Nanocrystalline and Ultrafine Grain Iron and Steel", Materials Science Forum, Vols. 633-634, pp. 197-203, 2010
Online since
November 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: Yan Beygelzimer, Dmitry Orlov, Alexander Korshunov, Sergey Synkov, Viktor Varyukhin, Irina Vedernikova, Alexey Reshetov, Alexandr Synkov, Lev Polyakov, Irina Korotchenkova
Abstract:During the last decade it has been shown that severe plastic deformation (SPD) is a very effective for obtaining ultra-fine grained (UFG)...
69
Authors: Young Seok Song, M.R. Lee, Jeong Tae Kim
Abstract:Alloy 718 ingot with a diameter of 400mm was made by the vacuum melting process ; VIM followed by VAR. Compression tests were conducted on...
3124
Authors: Trevor Sawatzky, Dong Yi Seo, H. Saari, D. Laurin, Dae Jin Kim, Young Won Kim
Abstract:The microstructure and creep properties of two powder metallurgy (PM) ‘beta gamma’ titanium aluminide alloys are presented. Alloy powders...
500
Authors: Sourav Das, Saurabh Kundu, Arunansu Haldar
Chapter 6: Materials
Abstract:Bainitic steels, which are transformed at very low temperatures, offer an excellent combination of strength and ductility where the strength...
939