Effects of heat treatment on microstructure and mechanical properties of ZA27 alloy

Liu, Yang; Li, Hongying; Jiang, Hao-Fan; Lu, Xiaochao

doi:10.1016/s1003-6326(13)62511-x

Cited by 50 publications

(30 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9b, c, it is possible to observe an increase in the relative quantity of the e phase in the alloy with higher copper content. Liu et al [23] also reported that the addition of copper more than 1 wt% resulted in formation of the e phase as well as with increasing the copper content the size, density and distribution of this phase increased. Figure 10 shows SEM micrographs of heat-treated Zn27Al-4Cu alloy at three different positions from the chill.…”

Section: Microstructures Of Heat-treated Alloysmentioning

confidence: 92%

See 1 more Smart Citation

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

et al. 2016

View full text Add to dashboard Cite

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.

show abstract

Section: Microstructures Of Heat-treated Alloysmentioning

confidence: 92%

“…This phase is unstable below the eutectoid temperature. Thus, during furnace cooling decomposes into the equilibrium a and g phases through a eutectoid reaction and forms a lamellar structure [12,23].…”

Section: Wear Testingmentioning

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

View full text Add to dashboard Cite

show abstract

“…Commercial ZA27 alloy, the nominal composition of which is listed in Table 1, was selected as the candidate for grain refinement tests. On the one hand, it is one of the most widely used commercial casting zinc alloy [14,15] to give better image contrast for the large differences in their X-ray attenuation lengths [16]. Furthermore, ZA27 alloy is well known for good fluidity and low melting temperature which will lead to a simplified experiment device.…”

Section: Introductionmentioning

confidence: 99%

Real time investigation of the grain refinement dynamics in zinc alloy by synchrotron microradiography

Chen

Mao

Xuan

et al. 2015

Journal of Alloys and Compounds

View full text Add to dashboard Cite

“…When the heating temperature is above liquidus temperature (500 °C) and the cooling rate is 10 °C/min and again the development of the dendritic structure arises ( Figure 6b). It is very important to mention that, contrary to some scientific literature [25][26][27], the monophasic structure developed only from the β-phase and shows higher stability at room temperature, a stability which continues for some years (about four years).…”

Section: Resultsmentioning

confidence: 74%

“…Since the eutectic and eutectoid transformations play an important role in the development of the final structure, DSC and DIL analyses have been carried out to obtain some information concerning the transformation. This was done using small samples extracted from the castings It is very important to mention that, contrary to some scientific literature [25][26][27], the monophasic structure developed only from the β-phase and shows higher stability at room temperature, a stability which continues for some years (about four years).…”

Section: Resultsmentioning

confidence: 99%

Dendritic Segregation of Zn-Al Eutectoid Alloys

Peter

Agapie

Varga

2018

Metals

View full text Add to dashboard Cite

The structural investigations performed and described in this paper are focused on both the segregation phenomenon at the dendrite level, and on the external structure in the equilibrium state. Qualitative and quantitative investigations of the Zn-Al eutectoid alloy (22% Al) structures in equilibrium and non-equilibrium states were considered and studied, revealing that, in this composition, dendritic segregation determines the eutectic transformation. Solidification in non-equilibrium conditions controls both the eutectic transformation and the significant variation of the chemical composition within the dendritic unit, as well as in other constituents. The most important effect of dendritic segregation is on the ratio of the different phases and on their geometry and distribution within the metallic matrix, which determines the material topology. The phenomena involved in such conditions are governed by the structural transformations, which take place during solidification and cooling in a solid state.

show abstract

Effects of heat treatment on microstructure and mechanical properties of ZA27 alloy

Cited by 50 publications

References 22 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

Real time investigation of the grain refinement dynamics in zinc alloy by synchrotron microradiography

Dendritic Segregation of Zn-Al Eutectoid Alloys

Contact Info

Product

Resources

About