The relationship between the wear behavior and microstructure features in end-chill cast Zn–27%Al alloy

Mojaver, Reza; Shahverdi, Hamid Reza

doi:10.1016/j.wear.2009.10.007

Cited by 7 publications

(8 citation statements)

References 21 publications

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“…The alloys were melted in a resistance furnace and degassed with zinc chloride and poured into the end-chill sand mold in the form of cylindrical castings (size: 40 mm in diameter, 160 mm height). The details of the end-chill apparatus, used to promote downward heat extraction, have been described in our previous works [11,17]. The chemical compositions of the produced alloys which determined by atomic absorption spectroscopy are listed in Table 1.…”

Section: Experimental Procedures 21 Alloy Preparationmentioning

confidence: 99%

“…They found that the highest wear resistance obtained with the monotectoidbased alloy containing 2 wt% copper and the wear resistance deteriorated at higher copper contents. Mojaver and Shahverdi [11] observed that decrease in cooling rate of Zn-27Al during end-chill casting resulted in increase in dendrite arm spacing, percentage porosity and the interdendritic region.…”

Section: Introductionmentioning

confidence: 99%

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Influence of heat treatment on the microstructure and wear behavior of end-chill cast Zn–27Al alloys with different copper content

et al. 2016

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The aim of this paper was to study the effect of heat treatment on the microstructure and wear behavior of Zn-27Al alloys with different copper content. In order to study the relationship between microstructure features and wear behavior, the alloys prepared by an end-chill cast apparatus and then heat treated. Heat treatment procedure involved solutionizing at temperature of 350°C for 72 h followed by cooling within the furnace to room temperature. Microstructural characteristics of as-cast and heattreated alloys at different distances from the chill were investigated by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffraction. Wear tests were performed using a pin-on-disk test machine. To determine the wear mechanisms, the worn surfaces of the samples were also examined by SEM and EDS. Results showed that heat treatment led to the complete dissolution of as-cast dendritic microstructure and formation of a fine lamellar structure with well-distributed microconstituents. Moreover, addition of copper up to 1 wt% had no significant change in the microstructure, while addition of 2 and 4 wt% copper resulted in formation of e (CuZn 4 ) particle in the interdendritic regions. The influence of copper content on the wear behavior of the alloys was explained in terms of microstructural characteristics. Delamination was proposed as the dominant wear mechanism.

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Section: Experimental Procedures 21 Alloy Preparationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of heat treatment on the microstructure and wear behavior of end-chill cast Zn–27Al alloys with different copper content

et al. 2016

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“…The Brinell hardness tests were conducted for a f 5 ball with the load of 250 kG. Criteria of the selection of wear test conditions (loading, sliding speed, sliding distance) were selected based on the analysis of researches, in which topic of research were a wear resistance of similar ZnAl-Cu alloys [1,2,5]. The tribological tests of Zn-Al-Cu alloys were conducted with the following parameters: rotational speed of 900 rpm, testing time: 30 min (which corresponds to the sliding distance of 1700m), load: 10N, contact temperature: 21°C.…”

Section: The Scope and Methodology Of The Researchmentioning

confidence: 99%

“…Zn-Al-Cu type alloys are characterized by a number of advantageous properties that can include good castability, high strength and hardness, good fatigue strength, low density, low friction factor, low wear rate speed and low production cost. Monotectoid zinc alloys (high aluminium zinc alloys) are characterized by the highest hardness, tensile strength and wear resistance [1,2]. In the majority of cases, lower value of the friction coefficient is observed in Zn-Al-Cu alloys than in bronze.…”

Section: Introductionmentioning

confidence: 99%

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Influence of heat treatment on the wear resistance of the ZnAl40Cu1.5Ti1.5 alloy

Michalik

Iwaniak

Wieczorek

2017

Archives of Metallurgy and Materials

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INFLUENCE OF HEAT TREATMENT ON THE WEAR RESISTANCE OF THE ZnAl40Cu1.5Ti1.5 ALLOYZn-Al-Cu alloys are predominantly used due to their tribological properties. One of the crucial issues related to the use of Zn-Al alloys is their dimensional instability. Partial replacement of copper with titanium greatly contributes to the reduction of the dimensional instability issue. The study involved the ZnAl40Cu1.5Ti1.5 alloy. In this work, microstructure and wear properties of ZnAl40Cu1.5Ti1.5 alloy were studied in both as-cast and heat treated conditions. The heat treatment was performed by solution treatment at a temperature of 385°C for 24 hours, quenching in cold water and artificial aging at 125°C for 3 hours. The hardness tests enabled to specify the optimum ageing time span, which amounts to 3 hours. Wear tests indicated that the ZnAl40Cu1.5Ti1.5 alloy is characterized with high wear resistance. It was also observed that the applied heat treatment increases the wear resistance of the experimental alloy.

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Thermal Analysis and Microstructure of ZA8 Alloy Solidifying Against Chills

Ramesh

Prabhu

2012

Trans Indian Inst Met

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The relationship between the wear behavior and microstructure features in end-chill cast Zn–27%Al alloy

Cited by 7 publications

References 21 publications

Influence of heat treatment on the microstructure and wear behavior of end-chill cast Zn–27Al alloys with different copper content

Influence of heat treatment on the microstructure and wear behavior of end-chill cast Zn–27Al alloys with different copper content

Influence of heat treatment on the wear resistance of the ZnAl40Cu1.5Ti1.5 alloy

Thermal Analysis and Microstructure of ZA8 Alloy Solidifying Against Chills

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