Investigation on Al2O3-Reinforced Zinc-Aluminum Matrix Composites

Procedia Materials Science Pub Date : 2015-01-01 DOI:10.1016/j.mspro.2015.04.093

Marco Zurko , Carlos Enrique Schvezov , Alicia Esther Ares

{"title":"Investigation on Al2O3-Reinforced Zinc-Aluminum Matrix Composites","authors":"Marco Zurko , Carlos Enrique Schvezov , Alicia Esther Ares","doi":"10.1016/j.mspro.2015.04.093","DOIUrl":null,"url":null,"abstract":"<div><p>Composite materials obtained by adding particles to the metallic matrix (MMCs) have made remarkable progress in its development and applications in automotive and aerospace industries in recent decades. Among them the most current application is MMCs with zinc and aluminum matrix. The present work is focused on the study of the effect of the directional heat extraction on the alumina distribution inside the zinc-aluminum matrix and on the columnar – to – equiaxed (CET) phenomenon in samples directionally solidified. The ZA-27 alloy was reinforced with ceramic-particulates of alumina (Al<sub>2</sub>O<sub>3</sub>) and then vertically directionally solidified. The following parameters were measured: cooling rates, temperature gradients, interphase velocities. And the influence of heat transfer on the solidification microstructure of the MMCs was analyzed. Experimental results include transient metal/mould heat transfer coefficients, secondary dendrite arm spacings and particle distribution as a function of solidification conditions imposed by the metal/mould system. The results about the conditions for the CET in MMCs are compared with those obtained in directional solidification of Zn-Al alloys.</p></div>","PeriodicalId":101041,"journal":{"name":"Procedia Materials Science","volume":"8 ","pages":"Pages 424-433"},"PeriodicalIF":0.0000,"publicationDate":"2015-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.mspro.2015.04.093","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Procedia Materials Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2211812815000942","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 2

Abstract

Composite materials obtained by adding particles to the metallic matrix (MMCs) have made remarkable progress in its development and applications in automotive and aerospace industries in recent decades. Among them the most current application is MMCs with zinc and aluminum matrix. The present work is focused on the study of the effect of the directional heat extraction on the alumina distribution inside the zinc-aluminum matrix and on the columnar – to – equiaxed (CET) phenomenon in samples directionally solidified. The ZA-27 alloy was reinforced with ceramic-particulates of alumina (Al₂O₃) and then vertically directionally solidified. The following parameters were measured: cooling rates, temperature gradients, interphase velocities. And the influence of heat transfer on the solidification microstructure of the MMCs was analyzed. Experimental results include transient metal/mould heat transfer coefficients, secondary dendrite arm spacings and particle distribution as a function of solidification conditions imposed by the metal/mould system. The results about the conditions for the CET in MMCs are compared with those obtained in directional solidification of Zn-Al alloys.

查看原文本刊更多论文

al2o3增强锌铝基复合材料的研究。

近几十年来，在金属基体中添加颗粒制备的复合材料在汽车和航空航天领域的发展和应用取得了显著进展。其中，目前应用最多的是锌铝基复合材料。本文主要研究了定向抽热对锌铝基体内部氧化铝分布的影响以及对定向凝固样品中柱状到等轴(CET)现象的影响。采用氧化铝(Al2O3)陶瓷颗粒对ZA-27合金进行增强，然后进行纵向固化。测量了以下参数:冷却速率、温度梯度、相间速度。分析了传热对复合材料凝固组织的影响。实验结果包括瞬态金属/模具传热系数、二次枝晶臂间距和颗粒分布作为金属/模具系统施加的凝固条件的函数。并与锌铝合金定向凝固的凝固条件进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Procedia Materials Science

自引率

0.00%

发文量