10.1007%2Fs11661-017-4398-x.pdf (2.54 MB)
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Development of novel melt spinning based processing route for oxide dispersion strengthened steels

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journal contribution
posted on 24.11.2017, 15:49 by Zuliang Hong, Alasdair P. Morrison, Hongtao ZhangHongtao Zhang, Steve G. Roberts, Patrick S. Grant
Melt spinning of an Fe-5Y and Fe-1Y-1Ti (wt%) alloys produced a relatively uniform spatial distribution of Y and Ti in solid solution and ribbons with consistent yield (> 60% by weight), fast processing time (< 10 s), good scalability (up to > 100 g feedstock material) and repeatability. Heat treatment in the presence of Fe2O3 as an oxygen source (Rhines pack method) at 973 K validated the potential of forming < 20 nm Yrich oxides in the 1 Fe-5Y ribbons. Pulverized Fe-1Y-1Y ribbons were consolidated to bulk using the field assisted sintering technique (FAST) incorporating nano-sized Fe3O4 powder as the oxygen source. After FAST at 1273 K, 50 MPa and 30 min a comparatively high number density of sub-micron Y and/or Ti-rich oxides were developed. Further formation of fine-scale oxides took place during post-FAST annealing, resulting in an approximate 20% increase in hardness at temperatures below 573 K, but with a reduced hardening effect above 673 K due to a small fraction of persistent porosity and mechanically weak prior ribbon boundaries that were decorated with Ti-rich oxides

Funding

UK Engineering and Physical Sciences Research Council provided financial support through grant award EP/P001645/1.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Metallurgical and Materials Transactions A

Volume

49

Citation

HONG, Z. ... et al, 2017. Development of novel melt spinning based processing route for oxide dispersion strengthened steels. Metallurgical and Materials Transactions A, 49 (2), pp. 604–612.

Publisher

Springer © The Author(s)

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by-nc/4.0/

Acceptance date

03/11/2017

Publication date

2017-12-04

Notes

This is an Open Access Article. It is published by Springer under the Creative Commons Attribution 4.0 International Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/.

ISSN

1073-5623

Language

en