Mechanical alloying of ODS tungsten heavy alloys and microstructure development of intermetallic compounds

Chen, Chun-Liang; Huang, Chun-Lin

doi:10.1007/s12540-013-5018-y

Cited by 12 publications

(1 citation statement)

References 16 publications

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“…oxide-dispersion-strengthened (oDS) metals have attracted a great deal of attention because of their unique structural feature: small oxide particles uniformly dispersed at a very high number density (~10 24 m -3 ) [11][12][13]. These nanoscale particles prevent the motion of dislocations and provide a high density of pinning sites for grain boundaries, thereby increasing the flow stress of the metallic matrix and stabilizing the high-temperature microstructure.…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Song,

Kim,

Nam

et al. 2021

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EffEct of Milling Duration on oxiDE-forMation BEhavior of oxiDE-DispErsion-strEngthEnED high-Entropy alloysoxide-dispersion-strengthened high-entropy alloys were produced by hot-pressing a ball-milled mixture of Y 2 o 3 and atomized CoCrFemnNi powder. The effect of milling duration on grain size reduction, oxide formation behavior, and the resulting mechanical properties of the alloys was studied. Both the alloy powder size and Y 2 o 3 particle size decreased with milling time. moreover, the alloy powder experienced severe plastic deformation, dramatically generating crystalline defects. As a result, the grain size was reduced to ~16.746 nm and in-situ second phases (e.g., mno 2 and σ phase) were formed at the defects. This increased the hardness of the alloys up to a certain level, although excessive amounts of in-situ second phases had the reverse effect.

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Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Song,

Kim,

Nam

et al. 2021

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Effect of High‐Energy Ball‐Milling Duration on Densification, Microstructure, and Mechanical Properties of Cr₂AlC‐Dispersed 90W‐6Ni‐2Fe‐2Co Heavy Alloys

Adhikari,

Sengupta,

Panigrahi

et al. 2024

Adv Eng Mater

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This study focuses on the role of Cr2AlC‐MAX phase incorporation on the density, phase composition, microstructure, and mechanical properties of 90W‐6Ni‐2Fe‐2Co heavy alloy. The blended powders are ball milled in a high‐energy ball mill up to 40 h, compacted, and sintered at 1500 °C. The mechanical alloying results in a refined microstructure with uniform distribution of W, matrix, and dispersoids. The minimum grain size of W (14.7 ± 5.6 μm) is obtained in 2 wt% Cr2AlC‐containing tungsten alloy prepared from 40 h‐milled powders. Among the investigated alloys, 1 wt% Cr2AlC‐incorporated samples exhibit maximum compressive stress (2026 MPa). The incorporation of fine Cr2AlC as dispersoids is found to be beneficial in improving the strength as well as ductility of WHAs. The best combination of yield strength (553.4 MPa), ultimate tensile strength (1011.2 MPa), ductility (11.4%), and product of strength and elongation (11.5 GPa%) is found in alloy prepared from 40 h milled 90W‐4.8Ni‐1.6Fe‐1.6Co‐2Cr2AlC. The improved tensile strength in Cr2AlC‐incorporated WHAs may be attributed to the combined effect of grain size refinement and dispersion strengthening. Overall, the combination of ball milling and Cr2AlC incorporation in tungsten‐heavy alloys is found to be effective in developing a novel W‐based alloy system for strategic applications.

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Preparation of Fine-Grained W-Ni-Fe Alloys by Using W Nanopowders

He²,

Zhang

et al. 2020

Metall Mater Trans A

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Mechanical alloying of ODS tungsten heavy alloys and microstructure development of intermetallic compounds

Cited by 12 publications

References 16 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of High‐Energy Ball‐Milling Duration on Densification, Microstructure, and Mechanical Properties of Cr₂AlC‐Dispersed 90W‐6Ni‐2Fe‐2Co Heavy Alloys

Preparation of Fine-Grained W-Ni-Fe Alloys by Using W Nanopowders

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Mechanical alloying of ODS tungsten heavy alloys and microstructure development of intermetallic compounds

Cited by 12 publications

References 16 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Effect of High‐Energy Ball‐Milling Duration on Densification, Microstructure, and Mechanical Properties of Cr2AlC‐Dispersed 90W‐6Ni‐2Fe‐2Co Heavy Alloys

Preparation of Fine-Grained W-Ni-Fe Alloys by Using W Nanopowders

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Effect of High‐Energy Ball‐Milling Duration on Densification, Microstructure, and Mechanical Properties of Cr₂AlC‐Dispersed 90W‐6Ni‐2Fe‐2Co Heavy Alloys