Optimization of mechanical alloying parameters in 12YWT ferritic steel nanocomposite

Rahmanifard, Roohollah; Farhangi, Hassan; Novinrooz, A. J.

doi:10.1016/j.msea.2010.07.048

Cited by 22 publications

(8 citation statements)

References 20 publications

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“…Although not much literature is available on the effect of milling parameters, such as the effect of ball-powder ratios and the effect of rotation speeds during synthesis of ferritic stainless steel by planetary milling and stainless steel duplex [23]. In other papers, we verified the influence of time and carbide addition to chip milling of an aluminum bronze alloy [21] and a stainless steel [4].…”

Section: Introductionmentioning

confidence: 64%

“…So, given these critical aspects for the final powder quality, experimental approaches that allow a wide investigation of the milling process and stablish mathematical relationships among its variables are important and necessary. In this context, the full factorial designs are experimental planning considered in the literature as suitable methods for this aim [21]. By setting only two levels for each control variable of the process, this approach is able to rank the more statistically significant variables on the analyzed results, to estimate their main and interaction effects, and to represent this process behavior by a mathematical model.…”

Section: Introductionmentioning

confidence: 99%

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Recycling Chips of Stainless Steel Using a Full Factorial Design

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Bayraktar

et al. 2019

Metals

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The aim of this study was to provide an experimental investigation on the novel method for recycling chips of duplex stainless steel, with the addition of vanadium carbide, in order to produce metal/carbide composites from a high-energy mechanical milling process. Powders of duplex stainless steel with the addition of vanadium carbide were prepared by high-energy mechanical ball milling utilizing a planetary ball mill. For this proposal, experiments following a full factorial design with two replicates were planned, performed, and then analyzed. The four factors investigated in this study were rotation speed, milling time, powder to ball weight ratio and carbide percentage. For each factor, the experiments were conducted into two levels so that the internal behavior among them could be statistically estimated: 250 to 350 rpm for rotation speed, 10 to 50 h for milling time, 10:1 to 22:1 for powder to ball weight ratio, and 0 to 3% carbide percentage. In order to measure and characterize particle size, we utilized the analysis of particle size and a scanning electron microscopy. The results showed with the addition of carbide in the milling process cause an average of reduction in particle size when compared with the material without carbide added. All the four factors investigated in this study presented significant influence on the milling process of duplex stainless steel chips and the reduction of particle size. The statistical analysis showed that the addition of carbide in the process is the most influential factor, followed by the milling time, rotation speed and powder to ball weight ratio. Significant interaction effects among these factors were also identified.

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Section: Introductionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Recycling Chips of Stainless Steel Using a Full Factorial Design

Mendonça

Capellato

Bayraktar

et al. 2019

Metals

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Section: Introductionmentioning

confidence: 99%

“…Traditionally, the introduction of dispersed oxides mainly relies on the mechanical alloying (MA) process [ 27 , 28 ]. Therefore, the MA parameters played a vital role in the process of preparing ODS alloys [ 27 , 29 , 30 ]. However, the extended delivery time of the MA process as well as the impurities introduced during the ball milling procedure present a challenge to the industrial production of large-sized structural parts [ 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermo-Mechanical Treatment on the Microstructure and Tensile Properties of the Fe-22Cr-5Al-0.1Y Alloy

et al. 2021

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Oxide dispersion strengthened ferritic steel is considered an important structural material in fusion reactors due to its excellent resistance to radiation and oxidation. Fine and dispersed oxides can be introduced into the matrix via the powder metallurgy process. In the present study, large grain sizes and prior particle boundaries (PPBs) formed in the FeCrAlY alloy prepared via powder metallurgy. Thermo-mechanical treatment was conducted on the FeCrAlY alloy. Results showed that microstructure was optimized: the average grain diameter decreased, the PPBs disappeared, and the distribution of oxides dispersed. Both ultimate tensile strength and elongation improved, especially the average elongation increased from 0.5% to 23%.

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“…Even though, extensive research has been carried out on the influence of milling parameters on the dispersion of yttria particles in the product using conventional high energy milling methods, there is an ambiguity regarding the effect of milling on Y 2 O 3 particles. The reported findings can be classified into three categories viz., (a) fragmentation of the particles to a size of 1-2 nm [12], (b) amorphisation of Y 2 O 3 and dissolution [10,13] and (c) fragmentation, dissociation and dissolution [14]. It is also not clear whether these processes are dependent on the energy of milling.…”

Section: Introductionmentioning

confidence: 99%