Effect of nanostructure on phase transformations during heat treatment of 2024 aluminum alloy

Demétrio, Kétner Bendo; Nogueira, Ana Paula Gomes; Menapace, C.; Bendo, Tatiana; Molinari, A.

doi:10.1016/j.jmrt.2021.07.044

Cited by 8 publications

(3 citation statements)

References 34 publications

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“…This process is mainly used to produce NC metal powders of aluminum, titanium, and their alloys [54]. The recovery and recrystallization due to heat generation because of friction is one of the downsides of this process and is difficult to control by any of its process parameters [106]. To summarize, the HEBM is the basic mechanical attrition process utilized to produce NC materials.…”

Section: High Energy Ball Millingmentioning

confidence: 99%

“…In a typical cryomilling setup, the metallic powder or combination of powders is pre-mixed and put into an insulated attrition chamber. Along with the powder, milling balls typically made of tungsten carbide [52] or stainless steel (SS) [106] are added in a specific ball to powder ratio. Liquid nitrogen is continuously supplied into this cryogenic chamber to reduce the temperature to cryogenic levels.…”

Section: Cryomillingmentioning

confidence: 99%

“…However, no significant change in percent elongation was detected. Dementrio et al [106] studied the effect of the crystallite size on the phase transformation of cryomilled Al 2024 alloy during the sintering process. They observed that for the smaller particles, the phase transitioning from the Al 2 CuMg (S) to the Al 2 Cu (θ) phase was occurred faster due to the higher amassed deformation energy.…”

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confidence: 99%

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Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

et al. 2021

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Nanostructuring is a commonly employed method of obtaining superior mechanical properties in metals and alloys. Compared to conventional polycrystalline counterparts, nanostructuring can provide remarkable improvements in yield strength, toughness, fatigue life, corrosion resistance, and hardness, which is attributed to the nano grain size. In this review paper, the current state-of-the-art of synthesis methods of nanocrystalline (NC) materials such as rapid solidification, chemical precipitation, chemical vapor deposition, and mechanical alloying, including high-energy ball milling (HEBM) and cryomilling was elucidated. More specifically, the effect of various process parameters on mechanical properties and microstructural features were explained for a broad range of engineering materials. This study also explains the mechanism of grain strengthening using the Hall-Petch relation and illustrates the effects of post-processing on the grain size and subsequently their properties. This review also reports the applications, challenges, and future scope for the NC materials.

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Section: High Energy Ball Millingmentioning

confidence: 99%

Section: Cryomillingmentioning

confidence: 99%

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