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Tribological Behaviour of Iron-Aluminium Alloy

机译:铁铝合金的摩擦学行为

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摘要

Iron-Aluminium based alloys have a significant prospective for operational applications at elevated temperature as they retain an outstanding elevated temperature corrosion resistance and they possess a lower density compared to other Iron- base materials such as cast iron and stainless steels. Material cost of IonAluminium based alloys is comparably low because their manufacturing and handling process are widely available. Fe-Al alloy is gaining its attractiveness in many business applications due to its wear properties and erosion properties, which is because of the presence of Al. The current study is focused on investigating the mechanical properties and tribological behaviour of Fe-Al alloy (Fe wt%94.18 and Al wt% 5.82) to various heat treatment processes. In this investigation we deal with the analysis of microstructure by means of microscope, crystalline phases and its structural properties by means of XRD analysis. Specimens are heat treated at different temperature (4000C, 6000C, 8000C and 12000C) and then quenched. The soaking time being 2 hours and quenching media is simply water. After heat treatment, we have to investigate the comparison between mechanical properties and behaviour of the material by means of metallography, XRD analysis and Vickers hardness test. After Vickers hardness test, erosion properties are measured by means of Air jet iv erosion test rig machine. It is found that water quenched from 12000C heated sample shows slightly increase in hardness, which is mainly due to new phase Al5W reveals in XRD pattern with highest intensity. XRD analysis shows that all samples of FeAl alloy are of BCC structure. Erosion wear test was executed on Fe-Al alloy by air jet erosion test rig. The volume of removed material gives the measurement of erosion wear at impact angles 300 ,600 and 900 . It is found that all heat treated samples (except quenched from 12000C sample) having maximum disinterested material volume at 600 impact angles, which shows that all samples are semi ductile. But in case of quenched from 12000C sample having maximum removed material volume is at 900 impact angle, shows brittle in nature. So it was shown that Fe-Al alloy with proper heat treatment has outstanding erosion resistance and it is estimated to find extensive applications as a wear resistant material.
机译:铁铝基合金在高温下具有广阔的应用前景,因为与其他铁基材料(例如铸铁和不锈钢)相比,它们具有出色的高温耐腐蚀性,并且密度较低。离子铝基合金的材料成本相对较低,因为它们的制造和处理过程广泛可用。 Fe-Al合金由于其耐磨性和耐蚀性而在许多商业应用中获得吸引力,这是由于Al的存在。当前的研究重点是研究Fe-Al合金(Fe重量%94.18和Al重量%5.82)在各种热处理工艺中的力学性能和摩擦学行为。在这项研究中,我们通过显微镜,晶体相和XRD分析对其微观结构进行分析。样品在不同温度(4000C,6000C,8000C和12000C)下进行热处理,然后淬火。均热时间为2小时,淬火介质为水。热处理后,我们必须通过金相,X射线衍射分析和维氏硬度试验研究材料的机械性能和性能之间的比较。在维氏硬度测试之后,通过空气喷射iv腐蚀试验台机测量腐蚀性能。发现从12000C加热的样品淬火后的水硬度略有增加,这主要是由于新相Al5W以最高强度的XRD图谱显示。 XRD分析表明,FeAl合金的所有样品均为BCC结构。用喷气腐蚀试验台对Fe-Al合金进行腐蚀磨损试验。去除的材料的体积给出了在冲击角300,600和900处的腐蚀磨损量度。发现所有热处理过的样品(从12000C样品中淬火除外)在600个冲击角处具有最大的不感兴趣的材料体积,这表明所有样品都是半韧性的。但是在从12000C淬火的样品中,最大去除的材料体积为900冲击角,本质上显示为脆性。因此表明,经过适当热处理的Fe-Al合金具有出色的耐蚀性,并且据估计可以广泛地用作耐磨材料。

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    Kumar Pankaj;

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  • 年度 2015
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