Cryogenic treatment and taguchi optimization of Haynes alloy

Rajkumar, M.; Kannan, N. Senthil; Bruhathi, M.; Malteshkumar, D.; Girisha, L.; Sahayaraj, A. Felix; Subbiah, Ram

doi:10.1016/j.matpr.2021.06.159

Cited by 3 publications

(4 citation statements)

References 19 publications

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“…Additionaly there is a relationship between wear rate and hardness. Wear rate were decreased with increase of hardness of the alloy 33 . When equimolar TiNbZr was analyzed, the continuity and width of the abrasion marks do not indicate extensive wear and material loss.…”

Section: Resultsmentioning

confidence: 87%

Microstructural Characterization and Wear Behavior of Porous Equimolar TiNbZr Medium-Entropy Alloys Scaffolds Produced by Mechanical Alloying

Karadeniz

Arslan

2022

Mat. Res.

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Recently, there has been increasing importance on scaffold materials that could be used in biomaterials. In the present study, equimolar TiNbZr medium entropy alloys (MEAs) and porous TiNbZr alloy scaffolds were produced by mechanical alloying (MA) that is a powder metallurgy processing technique. The MA process was carried out using high energy planetary ball mill. Ammonium bicarbonate (NH 4 HCO 3 ) at different percentage ratio was used as space holder to fabricate the porous TiNbZr scaffolds with using space-holder sintering method. Cold Isostatic Pressing (CIP) was performed for consolidation of mechanically alloyed powders. Finally, the green compact samples were sintered in tube furnace under vacuum atmosphere. The microstructural analyses, phase composition, porosity and density measurement, compression and microhardness tests and wear resistance of bulk alloys were examined. The X-Ray Diffraction (XRD) patterns of all samples indicated the dominant β-Ti phases and small amount of α-Ti phase. SEM (scanning electron microscope) images for porous TiNbZr alloy scaffolds demonstrated that porosity increased with increase of space holders amount. With the increasing porosity content, density, hardness, compressive strength and the elastic modulus of samples decreased while wear rate increased.

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Section: Resultsmentioning

confidence: 87%

Microstructural Characterization and Wear Behavior of Porous Equimolar TiNbZr Medium-Entropy Alloys Scaffolds Produced by Mechanical Alloying

Karadeniz

Arslan

2022

Mat. Res.

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“…Cast AZ31B alloy microhardness was 62.3 ± 1.1 HV and the inclusions of ZrO 2 as 2, 4, and 6 wt% recorded the significant improvement in hardness value compared to cast AZ31B alloy. Composite hardness was enhanced because ZrO 2 can withstand the maximum indentation load without failure [ 26 ]. The hard ceramic particle in a soft magnesium matrix has good hardness and tribological characteristics [ 7 , 10 ].…”

Section: Resultsmentioning

confidence: 99%

“…It withstands the maximum load before breaking a tensile specimen. Most of the research proved the significance of tensile strength by adding hard ceramic particles, and the ductility was limited [ [24] , [25] , [26] , [27] , [28] ].…”

Section: Resultsmentioning

confidence: 99%

“…In addition, the cryogenic treatment was one of the surface modification processes. It resulted in increased mechanical strength of the material [ 26 ]. The effect of ceramic particles on the microstructural and mechanical behaviour of mechanical stir cast developed AZ61 alloy composite and reported that the uniform stir speed leads to uniform particle distribution, which results in good mechanical properties of composite [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

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