On the Interfacial Characteristics of Compound Cast Al/Brass Bimetals

Akbarifar, Mehdi; Divandari, M.

doi:10.1007/s40962-016-0101-z

Cited by 17 publications

(9 citation statements)

References 50 publications

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“…However, it seems that the thermal energy of melt was not sufficient to dissolve more than 1 mm of the solid's surface in almost all cases. Similar observations are reported for the Al/Brass couples [39].…”

Section: Resultssupporting

confidence: 89%

“…Entering the mold cavity, the molten metal has a high amount of thermal energy, which can provide the activation energy for the consequent interactions at both sides of the melt/insert interface. Accordingly, any changes in the casting temperature and the liquid/solid ratio can alter the condition at the interface [34][35][36][37][38][39]. Previous investigations on the aluminum/brass (Al/Brass) by authors, proved the effectiveness of the variation of the pouring temperature and melt-to-solid (m/s) volume ration on the characteristics of the interface between two metals [39].…”

Section: Introductionmentioning

confidence: 99%

“…Accordingly, any changes in the casting temperature and the liquid/solid ratio can alter the condition at the interface [34][35][36][37][38][39]. Previous investigations on the aluminum/brass (Al/Brass) by authors, proved the effectiveness of the variation of the pouring temperature and melt-to-solid (m/s) volume ration on the characteristics of the interface between two metals [39]. As the solidification process begins, because of the interactions between two metals in the presence of thermal energy in use, intermetallic compounds can be formed [12].…”

Section: Introductionmentioning

confidence: 99%

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Study of Al/cast iron interface and graphite behavior

Akbarifar

Divandari

2017

J min metall B Metall

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The interface characteristics of aluminum/cast iron bimetals produced by compound casting were investigated. Aluminum melt was poured into molds, at 700 ̊C and 750 ̊C, around cylindrical cast iron bars having melt-to-solid volume ratios (V m /V s) of 3, 5 and 8, respectively. Microscopic observations showed that a reaction layer may form at the interface. This layer is composed of Fe 2 Al 5 intermetallic which has been formed initially at the notches of the insert's surface after making contact with the molten metal. The thickness of the interaction layer varied from 5μm, for the sample produced at 700 C and 3 V m /V s , up to 20μm for the sample poured at 750 C and 8 V m /V s. Microstructural analysis showed that increasing of the temperature and the melt-to-solid (m/s) volume ratio leads to the formation of a thicker and more uniform intermetallic layer. Microhardness of the Fe 2 Al 5 compound was measured 824 HV. A mechanism is suggested for the nucleation and growth of this intermetallic layer and also encapsulation of the flake graphite at the interface of two metals. It seems that the thermal and chemical situation at the interface of two metals, leads to an acceptable wettability of the graphite by molten aluminum.

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Section: Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Study of Al/cast iron interface and graphite behavior

Akbarifar

Divandari

2017

J min metall B Metall

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“…Akbarifar et al [ 21 ] compounded cast molten Al melt around a brass cylinder at 700 °C and 750 °C, with 3 and 5 as the melt–solid volume ratios. Upon increasing the temperature and melt–solid volume ratios, the rate of reaction was increased and there were three intermetallic layers.…”

Section: Analysis Of Cu-sn Cast Samplesmentioning

confidence: 99%

Titanium in Cast Cu-Sn Alloys—A Review

et al. 2021

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The article reviews the progress made on bronze alloys processed through various casting techniques, and focuses on enhancements in the microstructural characteristics, hardness, tensile properties, and tribological behaviour of Cu-Sn and Cu-Sn-Ti alloys. Copper and its alloys have found several applications in the fields of automobiles, marine and machine tools specifically for propellers in submarines, bearings, and bushings. It has also been reported that bronze alloys are especially used as an anti-wear and friction-reducing material to make high performance bearings for roller cone cock bits and warships for defence purposes. In these applications, properties like tensile strength, yield strength, fatigue strength, elongation, hardness, impact strength, wear resistance, and corrosion resistance are very important; however, these bronze alloys possess only moderate hardness, which results in low wear resistance, thereby limiting the application of these alloys in the automobile industry. The major factor that influences the properties of bronze alloys is the microstructure. Morphological changes in these bronze alloys are achieved through different manufacturing techniques, such as casting, heat treatment, and alloy addition, which enhance the mechanical, tribological, and corrosion characteristics. Alloying of Ti to cast Cu-Sn is very effective in changing the microstructure of bronze alloys. Reinforcing the bronze matrix with several ceramic particles and surface modifications also improves the properties of bronze alloys. The present article reviews the techniques involved in changing the microstructure and enhancing the mechanical and tribological behaviours of cast Cu-Sn and Cu-Sn-Ti alloys. Moreover, this article also reviews the industrial applications and future scope of these cast alloys in the automobile and marine industries.

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“…For the purpose of improving its mechanical properties and plasticity Al is often alloyed with Mn and Mg and the materials thereof are used for higher levels of deep drawing. The behaviour of these alloys has been investigated by many authors [1][2][3][4][5][6][7][8][9] in order to determine the technological, mechanical, thermal, electro-chemical, etc. properties.…”

Section: Introductionmentioning

confidence: 99%

Peculiar behaviour of pure ENAW-Al99.5 sheet metal during uniaxial tensile test

Yankov

Nikolova

2017

MATEC Web Conf.

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Abstract. Due to the generalized use of aluminium (Al) and Al alloy a detailed investigation of the mechanical and technological behaviour of a wide range of sheet metals is particularly needed. Often during deformation the Al sheets fold or crack which makes their subsequent use harder. The aim of this study is to identify the causes of the changes taking place during deformation that leads to earlier breaks of the Al sheet material. Pure ENAW-Al99.5 in as-received condition is used for examination in order to determine its behaviour without interference of the alloying elements. After the uniaxial uniform tensile test significant differences in the mechanical strength of the samples cut out from the sheet material at three different directions -0°, 45° and 90° angle to the rolling direction are observed. The hardness values measured at three different directions: alongside the long side of the samples, cross-section and top view are compared. The XRD and microstructure analysis confirm the grain and lattice reorientation after the tests compared with the initial structure of the sheet material. These results could be applied as a basis of comparison when examining other Al alloys used in aviation and mechanical engineering, chemical and agro-food industry, etc.

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On the Interfacial Characteristics of Compound Cast Al/Brass Bimetals

Cited by 17 publications

References 50 publications

Study of Al/cast iron interface and graphite behavior

Study of Al/cast iron interface and graphite behavior

Titanium in Cast Cu-Sn Alloys—A Review

Peculiar behaviour of pure ENAW-Al99.5 sheet metal during uniaxial tensile test

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