10.1007%2Fs11661-017-4398-x.pdf (2.54 MB)
Development of novel melt spinning based processing route for oxide dispersion strengthened steels
journal contribution
posted on 2017-11-24, 15:49 authored by Zuliang Hong, Alasdair P. Morrison, Hongtao ZhangHongtao Zhang, Steve G. Roberts, Patrick S. GrantMelt 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 AVolume
49Citation
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
2017-11-03Publication date
2017-12-04Notes
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
1073-5623Publisher version
Language
- en