Dislocation Configurations in Nanocrystalline FeMo Sintered Components

被引：7

作者：

Scardi, Paolo ^{[1
]}

D'Incau, Mirco ^{[1
]}

Leoni, Matteo ^{[1
]}

Fais, Alessandro ^{[2
]}

机构：

[1] Univ Trent, Dept Mat Engn & Ind Technol, I-38100 Trento, Italy

[2] Politecn Torino, Dept Mat Sci & Chem Engn, I-10129 Turin, Italy

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2010年 / 41A卷 / 05期

关键词：

HIGH-ENERGY; POWDER; CONSOLIDATION; COMPACTION;

D O I：

10.1007/s11661-009-9987-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Net-shape compaction of a nanocrystalline ball-milled commercial Fe-1.5 wt pct Mo powder was done via spark plasma sintering (SPS) and capacitor discharge sintering (CDS). A detailed microstructure analysis, performed by X-ray diffraction-whole powder pattern modeling (XRD-WPPM), shows that CDS, owing to the faster sintering conditions, retains a much finer and more uniform microstructure with dislocations uniformly distributed inside the nanocrystalline grains. Conversely, SPS causes dislocations to pile up and extensive grain growth to occur, especially when high sintering temperatures are employed.

引用

页码：1196 / 1201

页数：6

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