The constitution of alloys in the Al-rich corner of the Al-Si-Sm ternary system

被引：0

作者：

Markoli, B. ^{[1
]}

Spaić, S. ^{[1
]}

Zupanič, F. ^{[1
]}

机构：

[1] Faculty of Natural Science and Eng., University of Ljubljana, Aškerceva 12, 1000 Ljubljana, Slovenia

来源：

| 2001年 / Carl Hanser Verlag卷 / 92期

关键词：

Aluminum alloys - Composition - Crystallization - Differential thermal analysis - Energy dispersive spectroscopy - Mass spectrometers - Optical microscopy - Scanning electron microscopy - Temperature measurement - X ray diffraction analysis;

D O I：

暂无

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学科分类号：

摘要：

The constitution of alloys and the liquidus surface in the Al-rich corner of the Al-Si-Sm ternary system were determined by the examination of controlled heated and cooled specimens, as well as heat-treated specimens by means of optical and scanning electron microscopy, energy-dispersive X-ray spectroscopy, differential thermal analysis and X-ray diffraction. The Al-rich corner of the Al-Si-Sm ternary system comprises five regions of primary crystallisation (αAl, βSi, Al3Sm, Al2Si2Sm and AlSiSm) with following characteristic invariant reaction sequences: ternary eutectic reaction L &rarr αAl + βSi + Al2Si2Sm, and two liquidus transition reactions, i.e., L + Al3Sm &rarr αAlSm &rarr αAl + AlSiSm, and L + AlSiSm &rarr αAl + Al2Si2Sm. Along with the position of ternary eutectic and both interstitial points in the Al-rich corner of the Al-Si-Sm ternary system, the temperatures for each reaction were determined.

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