INFLUENCE OF EXTERNAL FACTORS ON THE DEFORMATION OF AL-AL4C3 SYSTEM

被引：0
|
作者：
BESTERCI, M [1 ]
GARAFA, M [1 ]
SLESAR, M [1 ]
JANGG, G [1 ]
机构：
[1] TECH UNIV RAKUSKO, RAKUSKO, CZECHOSLOVAKIA
来源：
KOVOVE MATERIALY-METALLIC MATERIALS | 1993年 / 31卷 / 06期
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D O I：
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the paper there are discussed the results of the analysis of temperature and deformation rate influences on static mechanical properties for Al-8Al4C3 system. The pronounced change of plastic properties was shown in the temperature range of 350-450-degrees-C at the deformation rate 10(-1) s-1 as a consequence of dynamic polygonizaton together with the grain boundary sliding. The parameters of state equation and apparent activation energy of the deformation process (325 kJ m-1) were evaluated. From the analysis of fracture micromechanisms follows that low-temperature fractures have transcrystalline character, at the temperatures above 400-degrees-C the intercrystalline character of the failure is dominant.
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页码：522 / 528
页数：7
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