000201165 001__ 201165
000201165 005__ 20180913062640.0
000201165 0247_ $$2doi$$a10.1016/j.jnucmat.2014.04.004
000201165 022__ $$a0022-3115
000201165 02470 $$2ISI$$a000338618600040
000201165 037__ $$aARTICLE
000201165 245__ $$aMicrostructure examination of Fe-14Cr ODS ferritic steels produced through different processing routes
000201165 260__ $$aAmsterdam$$bElsevier Science Bv$$c2014
000201165 269__ $$a2014
000201165 300__ $$a8
000201165 336__ $$aJournal Articles
000201165 520__ $$aVarious 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. The grain size was reduced, improving mechanical properties, tensile strength and Charpy impact, however bimodal-like distribution was also observed. As a result, larger, frequently elongated grains with size above 1 mu m and refined, equiaxed grains with a diameter ranging from 250 to 500 nm. Neutron diffraction measurements revealed that for HIP followed by hydrostatic extrusion material the strongest fiber texture was observed oriented parallel to the extrusion direction. In comparison with hot rolling and hot pressing methods, this material exhibited promising mechanical properties: the ultimate tensile strength of 1350 MPa, yield strength of 1280 MPa, total elongation of 21.7% and Charpy impact energy of 5.8 J. Inferior Charpy impact energy of similar to 3.0J was measured for HIP and hot rolled material, emphasising that parameters of this manufacturing process still have to be optimised. As an alternative manufacturing route, due to the uniform microstructure and simplicity of the process, hot pressing might be a promising method for production of smaller parts of ODS ferritic steels. Besides, the ductile-to-brittle transition temperature of all thermo-mechanically treated materials, in comparison with as-HIPped ODS steel, was improved by more than 50%, the transition temperature ranging from 50 to 70 degrees C (323 and 343 K) remains still unsatisfactory. (C) 2014 Elsevier B.V. All rights reserved.
000201165 700__ $$aOksiuta, Z.$$uBialystok Tech Univ, Bialystok, Poland
000201165 700__ $$aHosemann, P.$$uUniv Calif Berkeley, Berkeley, CA 94720 USA
000201165 700__ $$aVogel, S. C.$$uLos Alamos Natl Lab, Los Alamos Neutron Sci Ctr, Los Alamos, NM 87545 USA
000201165 700__ $$aBaluc, N.
000201165 773__ $$j451$$k1-3$$q320-327$$tJournal Of Nuclear Materials
000201165 909C0 $$pCRPP
000201165 909C0 $$0252028$$pSPC
000201165 909CO $$ooai:infoscience.tind.io:201165$$pSB$$particle
000201165 917Z8 $$x112823
000201165 937__ $$aEPFL-ARTICLE-201165
000201165 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000201165 980__ $$aARTICLE