Modeling the effects of temperature and time of homogenization annealing on the hardness of PdNi5 alloy

Ivanović, Ana; Trumić, Biserka; Ivanov, Svetlana Lj.; Marjanović, S.

doi:10.2298/hemind130620085i

Cited by 4 publications

(5 citation statements)

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“…Adekvatnost matematičkog modela, statistički je proverena analizom varijanse (Analysis of variance -ANOVA) [22]. Ovakav pristup analizi uticajnih parametara, uz primenu odgovarajućeg plana eksperimenta, uspešno je primenjen u modelovanju mnogih metalurških procesa [32][33][34][35][36][37].…”

Section: Uvodunclassified

Correlation of hardness of aluminum composites obtained by stir casting technology and the size and weight fraction of reinforcing Al2O3 particles

Petrović

Mladenović

Ivanović

et al. 2021

Hem Ind

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In this work, the stir casting method was applied to obtain composites based on the alloy AN EW 6061 used as a metal base, and Al2O3 particles as a reinforcement. Composites play a significant role as engineering materials. Therefore, it is necessary to study, in detail, the production methods and the factors that affect their mechanical properties. For this purpose, we have carried out a planned experiment wi ASM International th the aim to use regression analysis to predict the influence of particle size and mass fraction on hardness of the obtained composites. The full factorial experimental design with two factors was used, which was analyzed at three levels. Hardness was observed as a system response, while particle size and mass fraction were set as influencing factors. Influencing factors were observed at three levels: 50, 80 and 110 ?m for the particle size and 2, 5 and 8 mass%. Measured hardness values of the composites ranged from 72 HV10 to 80 HV10. Based on the probability values (p<0.05), it was determined which factors are important for the system response. Statistical analysis has shown that linear terms of the influence factors (size and mass fraction of reinforcement particles) and the square term of the mass fraction have statistical significance on the hardness change. The square term of the particle size and the interaction term of the influencing parameters do not have a statistically significant contribution in predicting the hardness value. Thus, a second-order polynomial model was obtained by the regression analysis. Influence of input factors on the system response and the adequacy of the obtained mathematical model were determined by using the Analysis of Variance (ANOVA). Based on the statistical data analysis, it was established that, the particle mass fraction has a greater influence on hardness of the obtained composite in relation to the particle size. By comparing the experimental and predicted values, a high degree of agreement was achieved so that the chosen model of the factorial experiment was adequate (R2=0.989). It can be also concluded that the developed regression model can be applied to predict hardness of the aluminum composite reinforced by Al2O3 particles in the chosen variation interval of particle size and mass fraction.

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Section: Uvodunclassified

Correlation of hardness of aluminum composites obtained by stir casting technology and the size and weight fraction of reinforcing Al2O3 particles

Petrović

Mladenović

Ivanović

et al. 2021

Hem Ind

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“…Only a few papers have been found [10,11] by the authors who dealt with PdNi and thermo-mechanical treatment on the properties of PdNi5 alloy, and that is why this alloy was selected for the study in order to determine the optimal conditions for thermo-mechanical processing regime, so it could be used for making catalyst-catchers to capture the platinum in catalysis process at high temperatures.…”

Section: Figure 1 the Binary Phase Diagram Of The System Pd-nimentioning

confidence: 99%

PdNi5 alloy: Effect of thermo-mechanical treatment on mechanical and microstructural properties

Ivanovic¹,

Trumic²,

Ivanov³

et al. 2017

Min Metal Eng Bor

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“…Likvidus i solidus linije iskazuju minimum na temperaturi od oko 1238 °C pri molskom udelu paladijuma x Pd = 0.4. Istraživanja pokazuju da se optimalnim izborom termomehaničkog režima prerade mogu dobiti vrlo velike vrednosti relativnog izduženja žice i zadovoljavajuća vrednost zatezne čvrstoće i električne provodljivosti što omogućava izradu PdNi5 legure u obliku žice optimalnih fizičko-mehaničkih i strukturnih karakteristika kako bi se od nje, postupkom tkanja, dobile mreže zahtevane širine za katalizatore-hvatače [1,[9][10][11][12]. Slika 1.…”

Section: Izvodunclassified

Influence of thermomechanical processing regime on the mechanical properties and electrical conductivity of PdNi5 alloy

Cvetković-Stamenković¹,

Manasijević

Marjanović

et al. 2017

Hem Ind

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This paper deals with experimental and analytical investigations of the influence of thermomechanical processing conditions on the mechanical properties and electrical conductivity of PdNi5 alloy, in the form of wire ? 0.15 mm, for making catalysts-catchers. Obtained results showed that mechanical properties and electrical conductivity depend on the applied regime of thermomechanical processing. Knowing the dependence of influence of parameters of thermomechanical processing regime on these properties enables the production of PdNi5 alloy with required characteristics for use in the process of catalytic oxidation of ammonia, that is solving problems of loss of platinum metals, especially platinum. The results of analytical investigations of influence of thermomechanical processing regime, by software package SPSS, on tensile strength, elongation and electrical conductivity of PdNi5 alloy in the form of wire ? 0.15 mm showed that using a linear regression model the mutual influences of selected parameters of thermomechanical treatment on mechanical properties and electrical conductivity of PdNi5 alloy, can be adequately described and analyzed. The results showed that tensile strength and electrical conductivity were only slightly affected with a change of temperature and time of annealing while annealing time has significant influence on the elongation value. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. TR34029: Razvoj tehnologije proizvodnje Pd katalizatora-hvataca za smanjenje gubitaka platine u visokotemperaturnim procesima katalize]

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Modeling the effects of temperature and time of homogenization annealing on the hardness of PdNi5 alloy

Cited by 4 publications

References 10 publications

Correlation of hardness of aluminum composites obtained by stir casting technology and the size and weight fraction of reinforcing Al2O3 particles

Correlation of hardness of aluminum composites obtained by stir casting technology and the size and weight fraction of reinforcing Al2O3 particles

PdNi5 alloy: Effect of thermo-mechanical treatment on mechanical and microstructural properties

Influence of thermomechanical processing regime on the mechanical properties and electrical conductivity of PdNi5 alloy

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