THE INFLUENCE OF CONSOLIDATION PROCEDURE PARAMETERS ON COMPACTION OF Al POWDER

被引：0
|
作者：
Lowe, Terry C. [1 ]
Kuncicka, Lenka [2 ,3 ]
Kocich, Radim [2 ,3 ]
Davis, Casey F. [1 ]
Hlavac, Libor [3 ]
Dvorak, Jiri [4 ]
机构：
[1] Colorado Sch Mines, George S Ansell Dept Met & Mat Engn, Golden, CO 80401 USA
[2] VSB Tech Univ Ostrava, Fac Met & Mat Engn, Dept Mat Forming, Ostrava, Czech Republic
[3] VSB Tech Univ Ostrava, Reg Mat Sci & Technol Ctr, Ostrava, Czech Republic
[4] AS CR, Vvi, Inst Phys Mat, Brno, Czech Republic
来源：
METAL 2015: 24TH INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS | 2015年
关键词：
Aluminum powder; cold isostatic pressing; sintering; oxygen content; X-ray; HIGH-PRESSURE TORSION; MECHANICAL-PROPERTIES; COMPOSITES;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of different consolidation procedures on compaction of Al powders was evaluated. Powder preparation procedures consisted of selection of particle size distribution, cold isostatic pressing (CIP), and vacuum sintering. Processing parameters investigated included the number of compression steps, compression pressure, and sintering temperature and time. Densities of the samples after compression and also after sintering were measured and compared. The overall oxygen content was analysed using by Energy Dispersive Spectroscopy. Phase composition was determined using X-ray. Microhardness measurements were performed to evaluate the degree of compaction. Double-step CIP at 200+ 300 MPa and subsequent sintering at 500 degrees C for 60 min produced the best combination of properties from all the consolidation technologies of Al particles. Of the particle size ranges studies, those with diameters between 20 and 45 mu m produced the best results. Aluminum oxide was present in the structure after all the processing treatments.
引用
收藏
页码：1352 / 1357
页数：6
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