Influence of heat treatment parameters on the lubricated sliding wear behaviour of a zinc-based alloy

Prasad, B. K.

doi:10.1016/j.wear.2004.07.006

Cited by 25 publications

(26 citation statements)

References 14 publications

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“…A reduction of hardness and strength, and increased elongation after heat treatment of the alloy also occurs. Reduction in the strength and hardness of the alloy by heat treatment is also suggested in other studies [13][14]. The main reason is the decomposition of the metastable T' phase.…”

Section: Introductionsupporting

confidence: 59%

Influence of Solution Heat Treatment on Structure and Mechanical Properties of ZnAl22Cu3 Alloy

Michalik

Chmiela

2016

Archives of Metallurgy and Materials

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The influence of solution heat treatment at 385°C over 10 h with cooling in water on the structure, hardness and strength of the ZnAl22Cu3 eutectoid alloy is presented in the paper. The eutectoid ZnAl22Cu3 alloy is characterized by a dendritic structure. Dendrites are composed of a supersaturated solid solution of Al in Zn. In the interdendritic spaces a eutectoid mixture is present, with an absence of the ε (CuZn4) phase. Solution heat treatment of the ZnAl22Cu3 alloy causes the occurrence of precipitates rich in Zn and Cu, possibly ε phase. Solution heat treatment at 385°C initially causes a significant decrease of the alloy hardness, although longer solution heat treatment causes a significant increase of the hardness as compared to the as-cast alloy.

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Section: Introductionsupporting

confidence: 59%

Influence of Solution Heat Treatment on Structure and Mechanical Properties of ZnAl22Cu3 Alloy

Michalik

Chmiela

2016

Archives of Metallurgy and Materials

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“…Therefore, decrease in wear resistance of the alloy with 2 wt% copper can be related to the above-mentioned reasons. Moreover, the lower wear resistance of the alloy with 4 wt% copper may be attributed to the formation of the T 0 phase, which reduces hardness [13].…”

Section: Wear Test Resultsmentioning

confidence: 99%

“…Furthermore, Prasad [13] reported that the presence of various phases with different thermal characteristics and mechanical properties in the structure of non-homogeneous as-cast alloys results in creation of residual stresses on a microscale. Based on this fact, Miroslav et al [2] concluded that obtained uniformity after heat treatment relieves the residual stresses and enhances the wear characteristics.…”

Section: Wear Test Resultsmentioning

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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“…The results from the [9] study indicate, that the solutionizing and aging the ZnAl40Cu2Si2 alloy improve the tensile strength. Different results were obtained in the study [13]. The study showed that the solutionizing and the aging of the ZnAl28Cu2 alloy cause a decrease in tensile strength.…”

Section: Introductionmentioning

confidence: 83%

An Influence of Ageing on the Structure, Corrosion Resistance and Hardness of High Aluminum ZnAl40Cu3 Alloy

Michalik¹,

Tomaszewska²

2016

Archives of Metallurgy and Materials

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Zn-Al-Cu alloys are used primarily because of their tribological properties as an alternative material for bronze, cast iron and aluminum alloy bearings and as a construction material. Particularly interesting are high aluminum zinc alloys. Monoeutectic zinc and aluminum alloys are characterized by the highest hardness, tensile strength and wear resistance of all of the zinc alloys. A significant problem with the use of the Zn-Al-Cu alloys is their insufficient resistance to electrochemical corrosion. Properties of Zn-Al-Cu alloys can be improved by heat treatment. The purpose of examination was to determine the effect of heat treatment (aging at various temperatures) on the microstructure and corrosion resistance of the ZnAl40Cu3 alloy. The scope of the examination included: structural examinations, determination of hardness using Brinell’s method and corrosion resistance examinations. Ageing at higher temperatures causes a creation of areas where is an eutectoid mixture. The study showed that ageing causes a decrease in hardness of ZnAl40Cu3 alloy. This decrease is even greater, when the temperature of ageing is lower. The studies have shown a significant influence of ageing on the corrosion resistance of the alloy ZnAl40Cu3. Maximum corrosion resistance were characterized by the sample after ageing at higher temperatures.

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Influence of heat treatment parameters on the lubricated sliding wear behaviour of a zinc-based alloy

Cited by 25 publications

References 14 publications

Influence of Solution Heat Treatment on Structure and Mechanical Properties of ZnAl22Cu3 Alloy

Influence of Solution Heat Treatment on Structure and Mechanical Properties of ZnAl22Cu3 Alloy

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

An Influence of Ageing on the Structure, Corrosion Resistance and Hardness of High Aluminum ZnAl40Cu3 Alloy

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