Microstructure and mechanical properties of ultrafine-grained Fe-14Cr and ODS Fe-14Cr model alloys.
TL;DR: In this article, the reduced activation ferritic Fe-14-wt%Cr and Fe- 14-t%Cr-0.3%Y 2 O 3 alloys were produced by mechanical alloying and hot isostatic pressing followed by forging and heat treating.
About: This article is published in Journal of Nuclear Materials.The article was published on 2011-10-01 and is currently open access. It has received 36 citations till now. The article focuses on the topics: Hot isostatic pressing & Heat treating.
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08 Sep 2014-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the influence of 1-4-at-hf additions on the thermal stability of mechanically alloyed nanocrystalline Fe-14Cr alloys was studied.
Abstract: The influence of 1–4 at% Hf additions on the thermal stability of mechanically alloyed nanocrystalline Fe–14Cr alloys was studied in this work. XRD-calculated grain size and microhardness results were reported versus isochronal annealing treatments up to 1100 °C. Microstructural evolution was investigated using channeling contrast FIB imaging and TEM. Grain size of samples with 4 at% Hf was found to be maintained in the nanoscale range at temperatures up to 1000 °C. Zener pinning was considered as a major source of high temperature grain size stabilization. By comparing the Orowan strengthening contribution to the total hardness, the deviation of grain size predictions from the actual grain size in Fe–14Cr–4Hf suggests the presence of thermodynamic stabilization by the solute segregation to grain boundaries (GBs). A predictive thermodynamic model indicates that the thermodynamic stabilization can be expected.
35 citations
TL;DR: In this paper, an oxide dispersion strengthened ferritic steel with a nominal composition of Fe 14Cr 2W 0.3Ti 3 O 3 (in wt%) was consolidated by hot isostatic pressing at 1150°C under various pressures in the range of 185-300 MPa for 3 hours.
34 citations
TL;DR: In this paper, various thermo-mechanical treatments were applied to refine and homogenise grain size and improve mechanical properties of hot-isostatically pressed (HIP) 14%Cr ODS ferritic steel.
33 citations
TL;DR: In this article, the oxide dispersion strengthened (ODS) steel with the nominal composition of Fe-14Cr-2W -0.3Ti-0.2V -0,07Ta-0,0,3Y2O3 was fabricated by mechanical alloying and hot isostatic pressing (HIP) in order to optimize the relative volume fraction of secondary phases.
32 citations
TL;DR: In this article, the use of high-energy milling is considered to be one of the most efficient techniques for producing materials that have a well-controlled chemical composition and microstructural features that are difficult to obtain using other synthesis routes.
31 citations
References
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TL;DR: WinPLOTR is a graphic program for the analysis of powder diffraction patterns that has been developed for a Windows 9x/2k/NT environment and can be used as a Graphic User Interface for programs defined by the user.
Abstract: WinPLOTR is a graphic program for the analysis of powder diffraction patterns. It has been developed for a Windows 9x/2k/NT environment. It takes advantage of this graphical environment to offer a powerful and user-friendly powder diffraction tool. The program is able to display and analyse many different kinds of diffraction patterns as well as calculated and observed profiles coming from the Windows/DOS version of the program FullProf. It can also be used as a Graphic User Interface (GUI) for programs defined by the user.
1,638 citations
TL;DR: The use of the Voigt function for the analysis of the integral breadths of broadened X-ray diffraction line profiles forms the basis of a rapid and powerful single-line method of crystallite size and strain determination which is easy to apply.
Abstract: The use of the Voigt function for the analysis of the integral breadths of broadened X-ray diffraction line profiles forms the basis of a rapid and powerful single-line method of crystallite-size and strain determination which is easy to apply. To avoid graphical methods or interpolation from tables, empirical formulae of high accuracy are used and an estimation of errors is presented, including the influence of line-profile asymmetry. The method is applied to four practical cases of size-strain broadening: (i) cold-worked nickel, (ii) a nitrided steel, (iii) an electrodeposited nickel layer and (iv) a liquid-quenched AlSi alloy.
1,085 citations
TL;DR: In this article, the authors reviewed the JNC activities on ODS steel development as "nano-composite materials" and concluded that the ODS-technology development achieved in the field of fast reactors should be effectively spun off to the fusion reactor first wall and blanket structural materials to allow for safe and economical reactor design.
673 citations
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01 Jul 2001
523 citations
"Microstructure and mechanical prope..." refers background in this paper
...Fe–Cr binary alloys are nowadays the most promising base to fabricate reduced-activation ferritic/martensitic (RAFM) and ferritic (RAF) steels for structural applications in future fusion reactors as well as in generation IV fission reactors [1–3]....
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TL;DR: In this article, the differences and similarities of different ODS steels are explained in terms of the microstructures of the steels, and observations are explained using the properties of the ODS micro-structures.
478 citations