Unidirectional solidification of Zn-rich Zn-Cu hypoperitectic alloy

被引：0

作者：

Department of Science Education, Education Faculty, Erciyes University, 38039 Kayseri, Turkey ^{[1
]}

不详 ^{[2
]}

不详 ^{[3
]}

机构：

[1] Department of Science Education, Education Faculty, Erciyes University

[2] Institute of Science and Technology, Department of Physics, Erciyes University

[3] Department of Physics, Faculty Arts and Sciences, Nǐde University

来源：

J Mater Res | 2009年 / 11卷 / 3422-3431期

关键词：

D O I：

10.1557/jmr.2009.0415

中图分类号：

学科分类号：

摘要：

Zn-0.7 wt% Cu-hypoperitectic alloy was prepared in a graphite crucible under a vacuum atmosphere. Unidirectional solidification of the Zn-0.7 wt% Cu-hypoperitectic alloy was carried out by using a Bridgman-type directional solidification apparatus under two different conditions: (i) with different temperature gradients (G = 3.85-9.95 K/mm) at a constant growth rate (41.63 um/s) and (ii) with different growth rate ranges (G = 8.33435.67 um/s) at a constant temperature gradient (3.85 K/mm). The microstructures of the directionally solidified Zn-0.7 wt% Cu-hypoperitectic samples were observed to be a cellular structure. From both transverse and longitudinal sections of the samples, cellular spacing (k) and cell-tip radius (R) were measured. The effects of solidification-processing parameters (G and VO on the microstructure parameters (k and R) were obtained by using a linear regression analysis. The present experimental results were also compared with the current theoretical and numerical models and similar previous experimental results. © 2009 Materials Research Society.

引用

页码：3422 / 3431

页数：9

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