MECHANICAL AND ELECTRICAL PROPERTIES OF CAST Al-Er-Zr ALLOY

被引：0
作者：
Leibner, Michal [1 ]
Vlach, Martin [1 ]
Kodetova, Veronika [1 ]
Vesely, Jozef [1 ]
Kudrnova, Hana [1 ]
Cieslar, Miroslav [1 ]
Zikmund, Sebastien [1 ]
Ocenasek, Vladivoj [2 ]
Lukac, Frantisek [1 ,3 ]
Mara, Vladimir [4 ]
机构：
[1] Charles Univ Prague, Fac Math & Phys, Prague, Czech Republic
[2] SVUM AS, Celakovice, Czech Republic
[3] Acad Sci Czech Republ, Inst Plasma Phys, Prague, Czech Republic
[4] Czech Tech Univ, Fac Mech Engn, Prague, Czech Republic
来源：
30TH ANNIVERSARY INTERNATIONAL CONFERENCE ON METALLURGY AND MATERIALS, METAL 2021 | 2021年
关键词：
Precipitation hardening; Al-Er-Zr alloy; resistivity; TEM; 400; DEGREES-C; PRECIPITATION EVOLUTION; COARSENING RESISTANCE; SC; ADDITIONS; SI;
D O I：
10.37904/metal.2021.4222
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Mechanical and electrical properties of an Al-Er-Zr alloy were investigated. Microhardness and resistometry measurements were supplemented by transmission electron microscopy and scanning electron microscopy. Resistivity decreases during isochronal annealing take place within the following temperature intervals: 150-270 degrees C, 300-420 degrees C and 450-570 degrees C. The isochronal microhardness curve reflects hardening effects at corresponding temperatures. However, no thermal effect was observed in the DSC curves ranging from 25 degrees C to 600 degrees C. A transmission electron microscopy observation of the alloy studied isochronally annealed up to 390 degrees C revealed a high density of L1(2)-structured particles, some of which had nucleated on dislocations. The distinct electrical resistivity, as well as microhardness, changes are in all cases connected with the precipitation and evolution of the Al3Er, Al3Zr and/or Al-3(Er,Zr) particles.
引用
收藏
页码：1095 / 1100
页数：6
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