Effect of Nano-Scale and Micro-Scale Yttria Reinforcement on Powder Forged AA-7075 Composites

Joshi, Tilak C.; Prakash, U.; Dabhade, Vikram V.

doi:10.1007/s11665-016-2023-6

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…Recently, nanotechnological methods, such as using a low percentage of nanoparticles to modify alloys (i.e. nano-treating), have gained increasing attention in metallurgy due to their revolutionary capabilities, such as microstructural control and property tuning 18–23 . The resultant properties of the nano-treated alloys would be highly dependent on the type, size, and distribution of the modified precipitate particles 24 .…”

Section: Introductionmentioning

confidence: 99%

Microstructure Control and Performance Evolution of Aluminum Alloy 7075 by Nano-Treating

Zuo

Sokoluk

Cao

et al. 2019

Sci Rep

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Nano-treating is a novel concept wherein a low percentage of nanoparticles is used for microstructural control and property tuning in metals and alloys. The nano-treating of AA7075 was investigated to control its microstructure and improve its structural stability for high performance. After treatment with TiC nanoparticles, the grains were significantly refined from coarse dendrites of hundreds of micrometers to fine equiaxial ones smaller than 20 μm. After T6 heat treatment, the grains, with an average size of 18.5 μm, remained almost unchanged, demonstrating an excellent thermal stability. It was found that besides of growth restriction factor by pinning behavior on grain boundries, TiC nanoparticles served as both an effective nucleation agent for primary grains and an effective secondary phase modifier in AA7075. Furthermore, the mechanical properties of nano-treated AA7075 were improved over those of the pure alloy. Thus, nano-treating provides a new method to enhance the performance of aluminum alloys for numerous applications.

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Section: Introductionmentioning

confidence: 99%

Microstructure Control and Performance Evolution of Aluminum Alloy 7075 by Nano-Treating

Zuo

Sokoluk

Cao

et al. 2019

Sci Rep

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“…Yttrium oxide (Y 2 O 3 ) is a thermodynamically most stable oxide and is appropriate for extreme operation conditions. Yttria a ceramic exhibits typical characteristics of ceramics that are not found in metallic or organic materials, including high hardness (Next to Diamond), high mechanical strength, high temperature stability, erosion resistance [15] as well as chemical resistance [16].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Kumar¹,

Kumar²,

Shalini³

et al. 2018

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The present investigation aims at fabricating a functionally graded Al-6Cr-Y 2 O 3 composite and its microstructural and property characterization. Al-6Cr-alloys with varying percentage of Y 2 O 3 (5-10 vol. %) have been used to fabricate FGM by powder metallurgy route. The samples were subsequently subjected to solution treatment at 610°C for 4 h followed by artificially aged at 310°C for 4 h. The microstructure, hardness and wear behavior of these FGM have been evaluated. FGM exhibited superior hardness (360 ± 5 VHN) as compared to the unprocessed composites (220 ± 5 VHN) due to the uniform dispersion of Y 2 O 3 particles. Wear resistance of Al-6Cr-10 Y 2 O 3 FGM were compared that of with pure Al-6Cr alloy by dry abrasive wear test. Al-6Cr-10 Y 2 O 3 FGM composites were found to exhibit higher wear resistance with the minimum wear rate of 0.009 mm 3 /m compared to the Al-6Cr alloy wear rate 0.02 mm 3 /m.

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On the Size Dependence of Molar and Specific Properties of Independent Nano-phases and Those in Contact with Other Phases

Kaptay

2018

J. of Materi Eng and Perform

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Effect of Nano-Scale and Micro-Scale Yttria Reinforcement on Powder Forged AA-7075 Composites

Cited by 6 publications

References 38 publications

Microstructure Control and Performance Evolution of Aluminum Alloy 7075 by Nano-Treating

Microstructure Control and Performance Evolution of Aluminum Alloy 7075 by Nano-Treating

Archives of Metallurgy and Materials

On the Size Dependence of Molar and Specific Properties of Independent Nano-phases and Those in Contact with Other Phases

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