Processing dense hetero-nanostructured metallic materials by spark plasma sintering

被引：52
作者：
Grosdidier, Thierry
Ji, Gang
Launois, Sebastien
机构：
[1] Univ Paul Verlaine, UMR 7078, CNRS, LETAM, F-57045 Metz 01, France
[2] Brunel Univ, Brunel Ctr Adv Solidificat Technol, Uxbridge UB8 3PH, Middx, England
[3] CEA, Dept Technol Energie & Nanomat, F-38054 Grenoble, France
来源：
SCRIPTA MATERIALIA | 2007年 / 57卷 / 06期
关键词：
spark plasma sintering; mechanical milling; powder consolidation; nanostructured materials (hetero-nanostructure); metallic alloys;
D O I：
10.1016/j.scriptamat.2007.05.022
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fully dense hetero-nanostructured (i.e. containing intermixed nano and micrometric grains) metallic (FeA1) materials can be successfully produced by spark plasma sintering (SPS) when mechanically milled nanostructured powders are used. This is due to the large temperature differences generated during the SPS runs, which modify locally the recrystallization response of the heavily deformed structure during sintering. Y2O3 addition delays the onset of recrystallization and, thereby, produces microstructures containing more than 80% of sub-500 nm grains. (c) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：525 / 528
页数：4
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