Investigation on mechanical properties and creep behavior of stir cast AZ91-SiCp composites

Viswanath, Abhilash; Dieringa, Hajo; Kumar, K. Suresh; Pillai, U.T.S.; Pai, B.C.

doi:10.1016/j.jma.2015.01.001

Cited by 90 publications

(26 citation statements)

References 30 publications

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“…This limit can only be overcome through reinforcing magnesium alloys with particles or fibres, similar to metal matrix composites (MMCs). Use of microscale reinforcements significantly improves the strength [11,12], wear [13], creep resistance [14][15][16], and fatigue strength [17,18]. However, these improvements require the addition of 10-40% of reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Ultrasound Assisted Casting of an AM60 Based Metal Matrix Nanocomposite, Its Properties, and Recyclability

Dieringa

Katsarou

Buzolin

et al. 2017

Metals

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An AM60 magnesium alloy nanocomposite reinforced with 1 wt % of AlN nanoparticles was prepared using an ultrasound (US) assisted permanent-mould indirect-chill casting process. Ultrasonically generated cavitation and acoustic streaming promoted de-agglomeration of particle clusters and distributed the particles throughout the melt. Significant grain refinement due to nucleation on the AlN nanoparticles was accompanied by an exceptional improvement in properties: yield strength increased by 103%, ultimate tensile strength by 115%, and ductility by 140%.Although good grain refinement was observed, the large nucleation undercooling of 14 K limits further refinement because nucleation is prevented by the formation of a nucleation-free zone around each grain. To assess the industrial applicability and recyclability of the nanocomposite material in various casting processes, tests were performed to determine the effect of remelting on the microstructure. With each remelting, a small percentage of effective AlN nanoparticles was lost, and some grain growth was observed. However, even after the third remelting, excellent strength and ductility was retained. According to strengthening models, enhanced yield strength is mainly attributed to Hall-Petch strengthening caused by the refined grain size. A small additional contribution to strengthening is attributed to Orowan strengthening.

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Section: Introductionmentioning

confidence: 99%

Ultrasound Assisted Casting of an AM60 Based Metal Matrix Nanocomposite, Its Properties, and Recyclability

Dieringa

Katsarou

Buzolin

et al. 2017

Metals

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“…The loss of material was determined and the weight measurement was performed using a precision electronic balance of accuracy ± 0.01 mg. The erosion rate was calculated using the equation Erosion rate = (Wb-Wa)/T [6], where Wb and Wa are weights before and after erosion. T is the time in minutes.…”

Section: B Experiments and Methodsmentioning

confidence: 99%

Analysis of air jet Erosion on Duplex Stainless Steel

2019

IJITEE

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The prevention or minimization of erosion is an urgent need. The proper selection of the material and the adopting methods for controlling the factors influencing erosion are the commonly used techniques. Duplex Stainless Steel because of its good corrosion resistance and other properties becomes a common choice. To have an effective control over erosion we must understand the effect of each parameter over the rate of erosion. Air jet test rig was used to study the erosion behavior of Duplex Stainless steel of 2205 grade in a controlled environment. Erosion tests were carried out with varying angle of impact, flow velocity and mass flow rate under standard conditions using an air jet erosion rig made according to ASTM G76 standard. Examination of the results associated with various elements such as impact angles, mass flow rate and flow velocity. The results showed that the erosion rate was maximum at lower impact angles and decreases with higher impact angles and the erosion rate increase with an increase in velocity and decrease with the increase in mass flow rate

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“…Susniak et al [13] industries due to its good combination of mechanical and corrosion properties compared to other Mg-based alloys. Among ceramic reinforcements also used in Mg MMC, silicon carbide particles (SiCp) are the most popular due to their high stability and wettability in the Mg matrix [14]. In this paper, the capability of spark plasma sintering (SPS) in a semi-solid regime to produce AZ91D/ SiCp composites, prepared by MM, was investigated.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of AZ91D/SiCp composites by mechanical milling of magnesium alloy chips and spark plasma sintering in a semi-solid regime

Nikmardan

Pouyafar

2019

Journal of Asian Ceramic Societies

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In the present study, the capability of spark plasma sintering (SPS) in a semi-solid regime to produce AZ91D/SiCp composites, prepared by mechanical milling (MM), was investigated. An SPS process was used to densify AZ91D/SiCp composite powders by heating them to a semi-solid temperature of 497°C or 516°C, at a heating rate, holding time and pressure of 50°C/min, 1 min and 40 MPa, respectively. In preparing the requisite powders, MM was used as an effective recycling method to prevent excessive consumption of energy and raw materials while converting magnesium alloy chips into powder in a planetary ball mill. The simultaneous effects of milling parameters (time and ball-to-powder weight ratio (BPRs)) on the MM powder were investigated by FESEM and PSA. Mechanical alloying (MA) of the milled powder with 40 wt% −2 µm SiC and characterization of the obtained powder by OM and PSA were also carried out. The phase compositions of the powder and sintered samples were analyzed by XRD. The microstructure, density, hardness and compressive strength of the sintered samples were also studied. The results show that composites with few porosities and good mechanical properties were prepared by SPS in a semi-solid regime.

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Investigation on mechanical properties and creep behavior of stir cast AZ91-SiCp composites

Cited by 90 publications

References 30 publications

Ultrasound Assisted Casting of an AM60 Based Metal Matrix Nanocomposite, Its Properties, and Recyclability

Ultrasound Assisted Casting of an AM60 Based Metal Matrix Nanocomposite, Its Properties, and Recyclability

Analysis of air jet Erosion on Duplex Stainless Steel

Fabrication of AZ91D/SiCp composites by mechanical milling of magnesium alloy chips and spark plasma sintering in a semi-solid regime

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