Microcasting of Al bronze:: influence of casting parameters on the microstructure and the mechanical properties

被引：16
|
作者：
Baumeister, Gundi [1 ]
Okolo, Brando [2 ]
Roegner, Joachim [2 ]
机构：
[1] Forschungszentrum Karlsruhe, Inst Mat Res IMF III, D-76021 Karlsruhe, Germany
[2] Univ Karlsruhe TH, Inst Werkstoffkunde 1, D-76131 Karlsruhe, Germany
来源：
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS | 2008年 / 14卷 / 9-11期
关键词：
D O I：
10.1007/s00542-008-0605-4
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this work the influence of the casting parameters on the microstructure and the mechanical properties of extremely small parts produced by microcasting was investigated. Different specimens were cast using an aluminum bronze with a composition defined by DIN EN 17 665. It was found that the yield stress and the ultimate tensile strength of micro-tensile test specimens increase when decreasing the mold temperature from 1,000 to 700 degrees C. This correlates with the increasing fineness of the microstructure. Additionally, the investigation showed that the mechanical strength of micro-specimens is higher than the one of macro-specimens cast at the same mold temperature due to a finer microstructure which hinders dislocation movement.
引用
收藏
页码：1647 / 1655
页数：9
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