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2005•Journal of Qingdao UniversityRequires access

Mechanical Alloying of Fe_(40)Co_(40)Si_(20) Nanocrystalline Solid Solution

Wenjuan Chen, Yang Wei

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Abstract

Fe40Ni40Si20 alloy is prepared by mechanical alloying. XRD is used to study the phase transformation, grain size and micro-strain.The result shows that α-Fe(bcc) and γ -Fe(fcc) nanocrystalline solid solution would be achieved after ball milling for 36h. After further ball milling, the supersaturated α phase will be decomposed and transformed into y phase gradually.The complete γ -Fe nanocrystalline solid solution would be achieved after ball milling for 72h. Grain size of the powder is up to 12nm. Micro-strain increases with the increase of milling time first, and then decreases.

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What this paper is about

Fe40Ni40Si20 alloy is prepared by mechanical alloying. XRD is used to study the phase transformation, grain size and micro-strain.The result shows that α-Fe(bcc) and γ -Fe(fcc) nanocrystalline solid solution would be achieved after ball milling for 36h. After further ball milling, the supersaturated α phase will be decomposed and transformed into y phase gradually.The complete γ -Fe nanocrystalline solid solution would be achieved after ball milling for 72h. Grain size of the powder is up to 12nm. Micro-strain increases with the increase of milling time first, and then decreases.

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Available abstract

Fe40Ni40Si20 alloy is prepared by mechanical alloying. XRD is used to study the phase transformation, grain size and micro-strain.The result shows that α-Fe(bcc) and γ -Fe(fcc) nanocrystalline solid solution would be achieved after ball milling for 36h. After further ball milling, the supersaturated α phase will be decomposed and transformed into y phase gradually.The complete γ -Fe nanocrystalline solid solution would be achieved after ball milling for 72h. Grain size of the powder is up to 12nm. Micro-strain increases with the increase of milling time first, and then decreases.

Key concepts: Nanocrystalline material, Materials science, Ball mill, Solid solution, Metallurgy, Grain size, Alloy, Phase (matter)

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