Al-Fe-Ce alloys based on water-atomized powders for high-temperature applications

被引：4
|
作者：
Neikov, O. D. [1 ]
Mil'man, Yu. V. [1 ]
Sirko, A. I. [1 ]
Samelyuk, A. V. [1 ]
Krainikov, A. V. [1 ]
Efimov, N. A. [1 ]
机构：
[1] Natl Acad Sci Ukraine, Inst Problems Mat Sci, Kiev, Ukraine
来源：
POWDER METALLURGY AND METAL CERAMICS | 2007年 / 46卷 / 9-10期
关键词：
aluminum alloys; water-atomized powders; rapid crystallization; mechanical properties;
D O I：
10.1007/s11106-007-0067-8
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microstructure and mechanical properties of Al-Fe-Ce alloys based on water-atomized powders between 20 and 300 degrees C are examined in comparison with the properties of similar alloys produced 41, other rapid crystallization techniques. Changes in atomization parameters vary both the cooling rate (from 10(4) to 10(6) K/sec) and powder size distribution (front 5 to 100 mu m). The excellent compactability Of water-atomized powders facilitates powder consolidation, which is based on hot extrusion and cold pressing of degassed powders. The mechanical properties are examined by tensile tests. The ultimate tensile strength is 500 to 550 MPa at 20 degrees C and 270 to 300 MPa at 300 degrees C at adequate plasticity. The properties achieved are comparable with those of similar alloys known from the literature.
引用
收藏
页码：429 / 435
页数：7
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