Effect of Tungsten and Molybdenum on the Crystallization, Microstructure and Properties of Silumin 226

Szymczak, Tomasz; Gumienny, G.; Pacyniak, T.; Walas, Krzysztof

doi:10.1515/afe-2015-0061

Cited by 13 publications

(16 citation statements)

References 7 publications

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“…The preliminary tests carried out confirmed the possibility of obtaining higher-strength properties of Al-Si alloys predestined to pressure die casting as a result of the discussed high-melting element additives (Ref [18][19][20][21]. The second part of this paper describes the experimental procedure of material studies.…”

Section: Introductionmentioning

confidence: 80%

Data Mining Methods for Prediction of Multi-Component Al-Si Alloy Properties Based on Cooling Curves

Regulski

Wilk-Kołodziejczyk

Szymczak

et al. 2019

J. of Materi Eng and Perform

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The paper concerns the mechanical properties of hypoeutectic Al-Si alloy (silumin) with the addition of Cr, Mo, V and W. Changes in microstructure under the impact of these elements result in a change in the mechanical properties. Crystallization of Al-Si alloys determines grain size reduction, which causes a significant increase in their strength properties. Crystallization subjected to modifications through the influence of alloying additives can be described by the cooling curve run. Statistical relationships between the characteristic values of cooling curves and mechanical properties are investigated with data mining techniques of regression, especially regression trees. Such knowledge could provide an ability of a property prediction on the basis of cooling curves in terms of the benefits of a short time of the curve registration. Keywords Al-Si alloy, cooling curves, data mining, decision trees, mechanical properties, regression This article is an invited submission to JMEP selected from presentations at the 73rd World Foundry Congress and has been expanded from the original presentation. 73WFC was held in Krakow, Poland, September 23-27, 2018, and was organized by the World Foundry Organization and Polish FoundrymenÕs Association.

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Section: Introductionmentioning

confidence: 80%

Data Mining Methods for Prediction of Multi-Component Al-Si Alloy Properties Based on Cooling Curves

Regulski

Wilk-Kołodziejczyk

Szymczak

et al. 2019

J. of Materi Eng and Perform

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“…In [4], the authors describe the effect of the addition of W and Mo on the properties of silumin 226 (Table 1). (Fig.…”

Section: Studies Of the Effect Of W And Mo Content On The Properties mentioning

confidence: 99%

The Use of Modern Statistical Methods to Optimize Production Systems in Foundries

Szymszal

Gajdzik

Kaczmarczyk

2016

Archives of Foundry Engineering

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Conducting reliable and credible evaluation and statistical interpretation of empirical results related to the operation of production systems in foundries is for most managers complicated and labour-intensive. Additionally, in many cases, statistical evaluation is either ignored and considered a necessary evil, or is completely useless because of improper selection of methods and subsequent misinterpretation of the results. In this article, after discussing the key elements necessary for the proper selection of statistical methods, a wide spectrum of these methods has been presented, including regression analysis, uni-and multivariate correlation, one-way analysis of variance for factorial designs, and selected forecasting methods. Each statistical method has been illustrated with numerous examples related to the foundry practice.

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“…Al-Mo phase diagram is presented in papers [11,12]. From the data presented in it results the lack of solubility of Mo in Al as was in the case of vanadium.…”

Section: Introductionmentioning

confidence: 98%

“…The phases occurring in the this diagram crystallize mainly due to peritectic transformations. These include phases: Al 12…”

Section: Introductionmentioning

confidence: 99%

Effect of Vanadium and Molybdenum on the Crystallization, Microstructure and Properties of Hypoeutectic Silumin

Szymczak¹,

Gumienny²,

Pacyniak³

2015

Archives of Foundry Engineering

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The paper presents the results of hypoeutectic silumin 226 grade and silumin produced on its basis through the addition of V and Mo. Vanadium and molybdenum were added as the preliminary alloy AlV10 and AlMo8 in an amount providing the concentration of 0.1; 0.2; 0.3 and 0.4% V and Mo. TDA curves of tested silumins were presented; regardless of the chemical composition there were similar thermal effects. Pressure castings microstructure research revealed the presence in silumins with the addition of V and Mo phases do not occur in silumin without these additives. These phases have a morphology similar to the walled, and their size increases with increasing concentration of V and Mo. The size of the precipitates of these phases silumin containing 0.1% V and Mo does not exceed 10 microns, while 0.4% of the content of these elements increases to about 80 microns. Tests of basic mechanical properties of silumins were carried out. It has been shown that the highest values of tensile strength Rm = 295 MPa and elongation A = 4.2% have silumin containing approximately 0.1% V and Mo. Increasing concentrations of these elements causes a gradual lowering of the Rm and A values.

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Effect of Tungsten and Molybdenum on the Crystallization, Microstructure and Properties of Silumin 226

Cited by 13 publications

References 7 publications

Data Mining Methods for Prediction of Multi-Component Al-Si Alloy Properties Based on Cooling Curves

Data Mining Methods for Prediction of Multi-Component Al-Si Alloy Properties Based on Cooling Curves

The Use of Modern Statistical Methods to Optimize Production Systems in Foundries

Effect of Vanadium and Molybdenum on the Crystallization, Microstructure and Properties of Hypoeutectic Silumin

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