Microstructures and hardness of ultrafine-grained Ni3Al

Languillaume, J.; Chmelı́k, František; Kapelski, G.; Bordeaux, F.; Назаров, А. А.; Canova, G.R.; Esling, Claude; Valiev, Ruslan Z.; Baudelet, B.

doi:10.1016/0956-7151(93)90110-e

Cited by 94 publications

(40 citation statements)

References 24 publications

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“…A remarkable feature in FeNi 3 is that h110i axis is pointing the hoop direction (i.e., the direction of the shear). Languillaume and his co-workers 12) reported a torsion texture in Ni 3 Al (which is also L1 2 ) with the h110i component being parallel to the shear direction, which is consistent with our EBSD results. Figure 8 shows the magnetization curves for individual materials.…”

Section: *2supporting

confidence: 82%

Micostructure and Magnetic Properties in Nanostructured Fe and Fe-Based Intermetallics Produced by High-Pressure Torsion

Hosokawa

Ohtsuka

et al. 2014

Mater. Trans.

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The microstructure and magnetic properties of nanostructured pure iron, FeCo and FeNi 3 produced by high-pressure torsion (HPT) were investigated. Electron backscattered diffraction (EBSD) technique was used to study the evolutions in microstructure and crystallographic texture during HPT, revealing that a weak deformation texture with an orientation of h110i bcc being parallel to the disc normal for pure iron and FeCo while h110i fcc was found to be parallel to the hoop direction of the HPT disc in FeNi 3 . The grain size of the HPTed materials was characterized by means of EBSD and transmission electron microscopy (TEM), and its influence on the coercivity was investigated. The other highlight of this paper is the use of a focused ion beam (FIB)-SEM dual beam instrument. This enabled us to obtain quite high image quality (IQ) values for the EBSD measurements even for the highly deformed microstructure in the current ferromagnetic intermetallics. Keywords: bulk nanostructured metals, severe plastic deformation, electron backscattered diffraction (EBSD), magnetic materials, coercivity, focused ion beam-scanning electron microscope (FIB-SEM)

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Section: *2supporting

confidence: 82%

Micostructure and Magnetic Properties in Nanostructured Fe and Fe-Based Intermetallics Produced by High-Pressure Torsion

Hosokawa

Ohtsuka

et al. 2014

Mater. Trans.

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“…HPT deformation of Ni 3 Al has been studied by various workers. Languillaume et al 5) reported almost full disordering and grain refinements to 50 nm as well as the formation of the strong torsion texture. Korznikov et al 6) pointed out that the addition of B increases the thermal stabilities of the nano-grained structures in HPT-deformed Ni 3 Al.…”

Section: Introductionmentioning

confidence: 99%

“…The High-Pressure Torsion (HPT) method opened a pathway to investigate these compounds since the large torsion deformation is applied under quasi-hydrostatic conditions which significantly suppress the fracture. A number of intermetallic compounds, such as TiNi, 1,2) Ni 3 Al, [3][4][5][6] Cu 3 Au, 7) ZrCu, 8) and Zr 3 Al, 9) have been subjected to HPT deformation which, aside from the expected grain refinement, resulted in various interesting phenomena, e.g. amorphization, disordering, and/or shear band formation.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous Process of Disordering and Structural Refinement in Ni<SUB>3</SUB>Al during Severe Plastic Deformation by High-Pressure Torsion

et al. 2010

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The process of grain refinement in Ni 3 Al by high-pressure torsion (HPT) was investigated up to 100 turns. The entire diametric sections of the deformed samples were analyzed by optical microscopy and image processing methods in order to evaluate both the spatial distribution and the volume fractions of the nanocrystalline and coarse grains. A thick band of nanocrystalline phase was formed in the middle section of the samples, and a structure containing mainly coarser ordered fragments was present in the vicinity of the top and bottom surfaces. Pseudotwinning along {111} was observed at the boundaries of coarse-fragmented grains as well as the inside of the fragments and is put forward as a possible mechanism for disordering and nanocrystalline structure formation in Ni 3 Al.

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“…In the past decade, various kinds of advanced techniques by using intense plastic deformation were developed to synthesize ultra-fine grained materials, such as equal-channel angular pressing (1,2), cold-rolling (3,4) and torsion straining (5). However, most of these techniques are still difficult for practical application to conventional engineering materials.…”

Section: Introductionmentioning

confidence: 99%

Low carbon steel with nanostructured surface layer induced by high-energy shot peening

Liu¹,

Wang²,

Lou³

et al. 2001

Scripta Materialia

230

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Microstructures and hardness of ultrafine-grained Ni3Al

Cited by 94 publications

References 24 publications

Micostructure and Magnetic Properties in Nanostructured Fe and Fe-Based Intermetallics Produced by High-Pressure Torsion

Micostructure and Magnetic Properties in Nanostructured Fe and Fe-Based Intermetallics Produced by High-Pressure Torsion

Heterogeneous Process of Disordering and Structural Refinement in Ni<SUB>3</SUB>Al during Severe Plastic Deformation by High-Pressure Torsion

Low carbon steel with nanostructured surface layer induced by high-energy shot peening

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