Microstructural Investigation and Wear Characteristics of Al-Si-Ti Cast Alloys

Q2 Engineering

Engineering Transactions Pub Date : 2020-10-29 DOI:10.24423/ENGTRANS.1156.20201029

A. Subhi, A. A. Khleif, Qasim Saad Abdulwahid

引用次数: 1

Abstract

Hypoeutectic Al-7Si alloys containing various titanium proportions (0.8–1.6%) were produced and analyzed in this work. The wear characteristics of Al-Si alloys were studied under the conditions of dry sliding at various applied loads. Optical microscope (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to depict the microstructure, worn surface and phases, respectively. Phases of α-Al, eutectic and Ti9Al23 were recognized in the Al-Si-Ti alloys matrix. Considerable coarsening took place in α-Al and eutectic silicon in a fully eutectic through solidification. The hardness was increased as the titanium proportion increased. Furthermore, significant changes were found in the wear rate depending on the titanium proportion added and load applied.

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Al-Si-Ti铸造合金的显微组织研究及磨损特性

本工作生产并分析了含有不同钛比例（0.8–1.6%）的亚共晶Al-7Si合金。研究了铝硅合金在不同载荷作用下的干滑动磨损特性。利用光学显微镜（OM）、扫描电子显微镜（SEM）和X射线衍射仪（XRD）分别对其微观结构、磨损表面和相进行了表征。在Al-Si-Ti合金基体中识别出α-Al相、共晶相和Ti9Al23相。通过凝固，α-Al和低共晶硅在完全共晶状态下发生了相当大的粗化。硬度随着钛比例的增加而增加。此外，根据添加的钛比例和施加的载荷，发现磨损率发生了显著变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Transactions Engineering-Engineering (all)

CiteScore

1.40

自引率

0.00%

发文量

期刊介绍： Engineering Transactions (formerly Rozprawy Inżynierskie) is a refereed international journal founded in 1952. The journal promotes research and practice in engineering science and provides a forum for interdisciplinary publications combining mechanics with: Material science, Mechatronics, Biomechanics and Biotechnologies, Environmental science, Photonics, Information technologies, Other engineering applications. The journal publishes original papers covering a broad area of research activities including: experimental and hybrid techniques, analytical and numerical approaches. Review articles and special issues are also welcome. Following long tradition, all articles are peer reviewed and our expert referees ensure that the papers accepted for publication comply with high scientific standards. Engineering Transactions is a quarterly journal intended to be interesting and useful for the researchers and practitioners in academic and industrial communities.