Pulse electric current sintering of iron-base powders prepared by high energy milling

被引：2
|
作者：
Li, Y. Y. [1 ]
Li, X. Q. [1 ]
Long, Y. [1 ]
Shao, M. [1 ]
Xia, W. [1 ]
机构：
[1] S China Univ Technol, Coll Mech Engn, Guangzhou 510640, Peoples R China
来源：
ADVANCES IN MACHINING & MANUFACTURING TECHNOLOGY VIII | 2006年 / 315-316卷
关键词：
iron base powder; high energy milling; pulse electric current sintering; density; microstructure and performance;
D O I：
10.4028/www.scientific.net/KEM.315-316.445
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fe-2Cu-2Ni-1Mo-0.8C (wt. pct) alloys were successfully fabricated from elemental mixed powders by high energy milling and pulse electric current sintering, and the effects of milling time and sintering parameters on the densification degree, microstructure, mechanical properties and fracture characteristic of sintered material were investigated. Results showed that with increasing milling time, pulse electric current peak and sintering time, the density and transverse rupture strength of sintered alloy were improved. However, higher pulse electric current peak and/or longer sintering time were unfavorable to the density and strength of sintered alloy, because of generating overhigh sintering temperature. The density and transverse rupture strength of sintered alloy could reach 7.74 X 10(3) kg/m(3) and 2231 MPa, respectively, and the corresponding fracture morphology was characterized as intergranular fracture.
引用
收藏
页码：445 / 449
页数：5
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