Study on the eutectic and post-eutectic reactions in LM13 aluminum alloy using cooling curve thermal analysis technique

Hosseini, Vahid A.; Shabestari, S.G.

doi:10.1007/s10973-015-5163-2

J Therm Anal Calorim

2015

DOI: 10.1007/s10973-015-5163-2

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Study on the eutectic and post-eutectic reactions in LM13 aluminum alloy using cooling curve thermal analysis technique

Vahid A. Hosseini

S.G. Shabestari

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Cited by 3 publications

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“…The solid fraction at the DCP can be determined by using different experimental and/or arithmetic methods [8]. Among them, the Newtonian and Fourier [20][21][22] methods are mostly applied in the case when the cooling curve data are known.…”

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confidence: 99%

The Determination of Dendrite Coherency Point Characteristics Using Three New Methods for Aluminum Alloys

Vicario

Viteri

Montero³

et al. 2018

Applied Sciences

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The aim of this work is to give an overview of existing methods and to introduce three new methods for the determination of the Dendrite Coherency Point (DCP) for AlSi10Mg alloys, as well as to compare the acquired values of DCP based on a thermal analysis and on the analysis of cooling curves working with only one thermocouple. Additionally, the impact of alloying and contaminant elements on the DCP will be also studied. The first two proposed methods employ the higher order derivatives of the cooling curves. The DCP was determined as the crossing point of the second and third derivative curves plotted versus time (method 1) or that of the temperature (method 2) with the zero line just after the maximum liquidus temperature. The third proposed method is based on the determination of the crossing point of the third solid fraction derivative curve with the zero line, corresponding to a minimum of the second derivative. A Taguchi design for the experiments was developed to study the DCP values in the AlSi10Mg alloy. The DCP temperature values of the test alloys were compared with the DCP temperatures predicted by the previous methods and the influence of the major and minor alloying elements and contaminants over the DCP. The new processes obtained a correlation factor r2 from 0.954 and 0.979 and a standard deviation from 1.84 to 2.6 °C. The obtained correlation values are higher or similar than those obtained using previous methods with an easier way to define the DCP, allowing for a better automation of the accuracy of DCP determination. The use of derivative curves plotted versus temperature employed in the last two proposed methods, where the test samples did not have an influence over the registration curves, is proposed to have a better accuracy than those of the previously described methods.

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mentioning

confidence: 99%

The Determination of Dendrite Coherency Point Characteristics Using Three New Methods for Aluminum Alloys

Vicario

Viteri

Montero³

et al. 2018

Applied Sciences

View full text Add to dashboard Cite

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Computer-aided cooling curve thermal analysis and microstructural evolution of Mg–5Zn–xY cast alloys

Jafari

Khalilnezhad

Farahany

2017

J Therm Anal Calorim

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Effect of cooling rate and Al content on solidification characteristics of AZ magnesium alloys using cooling curve thermal analysis

Yavari

Shabestari

2017

J Therm Anal Calorim

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Study on the eutectic and post-eutectic reactions in LM13 aluminum alloy using cooling curve thermal analysis technique

Cited by 3 publications

References 15 publications

The Determination of Dendrite Coherency Point Characteristics Using Three New Methods for Aluminum Alloys

The Determination of Dendrite Coherency Point Characteristics Using Three New Methods for Aluminum Alloys

Computer-aided cooling curve thermal analysis and microstructural evolution of Mg–5Zn–xY cast alloys

Effect of cooling rate and Al content on solidification characteristics of AZ magnesium alloys using cooling curve thermal analysis

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