Design and characterization of an oxides hybrid dispersion strengthened iron based composite with a graded and architectural microstructure

JOURNAL OF ALLOYS AND COMPOUNDS

卷:802

Article

Naji, K.^1,2  Marinova, M.^3,4  Touzin, M.¹  Pouligny, Ph²  Avettand-Fenoel, M. N.^3,4 

[1] Univ Lille, CNRS, INRA, ENSCL,UMET Unite Mat & Transformat,UMR 8207, F-59000 Lille, France

[2] SNCF Reseau, Direct Ingn & Projets, F-93574 La Plaine Saint Denis, France

[3] Univ Lille, Inst Chevreul, F-59655 Villeneuve Dascq, France

[4] CNRS, F-59655 Villeneuve Dascq, France

关键词: Metal matrix composite;    Mechanical alloying;    Sintering;    Microstructure;    Mechanical properties;    Electrical conductivity;   

DOI  :  10.1016/j.jallcom.2019.06.158

来源: Elsevier

【 摘 要 】

A graded Fe based composite reinforced with tetragonal yttria stabilized zirconia, monoclinic zirconia, wustite and at a less extent, Zr0.978Fe0.022O1.978 (tetragonal) and Zr0.85Y0.15O1.93 (cubic) was developed by high energy ball milling, compaction and sintering. Solid state sintering entailed (i) the growth of Fe grains which remained submicrometric and (ii) the coarsening of oxides reinforcements forming an interconnected network in the bulk graded composite. The increase of oxide reinforcements volume fraction enabled to obtain a material with a graded electrical resistivity and a slightly graded hardness; the bending resistance of the as-developed material was however decreased because of the weakness of the reinforcements - matrix bonds. (C) 2019 Elsevier B.V. All rights reserved.

【 授权许可】

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