Texture and microstructure evolution of Fe–Ni alloy after accumulative roll bonding

Tirsatine, Kamel; Azzeddine, Hiba; Baudin, Thierry; Helbert, Anne‐Laure; Brisset, François; Alili, B.; Bradai, Djamel

doi:10.1016/j.jallcom.2014.04.173

Cited by 35 publications

(53 citation statements)

References 39 publications

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“…A recent paper reported [16] that the texture near the surface of the same alloy (Fe-36%Ni) processed by ARB was largely dominated by the C component, whereas the B, A and A 1 ⁎ components clearly decreased after 5 ARB cycles. Based on these findings, CARB processing does not considerably affect the texture at the sheet surface.…”

Section: Componentmentioning

confidence: 95%

“…The Fe-36%Ni alloy processed by ARB developed a strong copper/ Dillamore component, and no new orientation was reported during the ARB processing [16]. In the ARB process, the direction of the redundant shear strain and brushing is along the RD for all passes.…”

Section: Componentmentioning

confidence: 99%

“…Many studies have been conducted to evaluate the effects of equal channel angular extrusion (ECAE) [10][11][12], high-pressure torsion (HPT) [13] and accumulative roll bonding (ARB) [14][15][16] on the texture evolution.…”

Section: Introductionmentioning

confidence: 99%

“…Textures developed in the ARB process are often evaluated and generally characterized by rolling-type components at the mid-thickness and shear-type components near the surface [16,18,19]. To the best of our knowledge, the texture evolution during CARB processing has never been reported in the literature.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Texture evolution of an Fe–Ni alloy sheet produced by cross accumulative roll bonding

Azzeddine

Tirsatine

Baudin

et al. 2014

Materials Characterization

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Section: Componentmentioning

confidence: 95%

Section: Componentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Texture evolution of an Fe–Ni alloy sheet produced by cross accumulative roll bonding

Azzeddine

Tirsatine

Baudin

et al. 2014

Materials Characterization

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“…For Fe-36%Ni steel with the SFE of 122 mJ m −2 [13], dislocation slip is the common deformation mechanism informed from the previous studies [3], and the information about mechanical twinning is limited. It is well understood that twinning is the main deformation mechanism in materials with low SFE, such as Cu-Al alloy, twinninginduced plasticity (TWIP) steels [14].…”

Section: Resultsmentioning

confidence: 99%

Deformation mechanism of cryorolled Fe-36%Ni strip steel

Zheng

Song

et al. 2015

MATEC Web of Conferences

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Abstract. The deformation mechanism of cryogenic rolled Fe-36%Ni steel is investigated with rolling strain of = 0.24-0.92. Experimental results show that both dislocation slip and twinning are activated at cryogenic temperature as strain = 0.24, and the mean thickness of deformation twins is about 200 nm. When the rolling strain increases to 0.53, the mean thickness of deformation twins reduces to 50 nm and some curved deformation twins exists. As the rolling strain increases to 0.92, the thickness of deformation twins is no longer changed and the micro shear bands exist due to the concentration of work hardening, which suggests that twinning is activated at the early stage of cryogenic rolling (CR) process. It is assumed that more deformation twins will be fragmented by shear bands during the following CR. The dislocation slip becomes the dominated mechanism again during the following deformation. The mechanism of the Fe-36%Ni steel following CR was analyzed quantitatively.

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Study of the microstructure and texture heterogeneities of Fe–48wt%Ni alloy severely deformed by equal channel angular pressing

et al. 2018

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A Fe-48wt%Ni alloy was processed by severe plastic deformation using equal channel angular pressing process. A stacking of 9 sheets was introduced and pressed up to two passes into die with an inner angles of Φ=90º and outer arc of curvature ψ= 17° at room temperature following route A. The same material in bulk form was also ECAPed up to one pass. The microstructure and the texture were investigated by means of electron backscattered diffraction and X-ray diffraction, respectively. To evaluate the mechanical response, Vickers microhardness was carried out. The given analyses concern the asreceived sample, the peripheral and the central plates of the pressed stacks and the upper, the middle and the lower parts of the pressed bulk material. The deformation was heterogeneous and variations in texture and microstructure, resulting from different efficiencies in the shearing process, were locally noted. For the stacks samples, the microstructure evolved from equiaxed grains of 9 μm with high fraction of high-angle grain boundaries (around 90%) to a heterogeneous fine grain structure with an average grain size of 3 m after two passes. On the contrary, for the bulk sample, the evolution was 2 to a banded structure after one pass. Results of mechanical property show that microhardness increased significantly from 147 Hv before deformation to mean values of 244 (after one pass) and 235 Hv (after two passes) for the bulk and stacked samples, respectively. The Hall-Petch effect and dislocation density were evaluated as the most responsible in material strengthening.

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Texture and microstructure evolution of Fe–Ni alloy after accumulative roll bonding

Cited by 35 publications

References 39 publications

Texture evolution of an Fe–Ni alloy sheet produced by cross accumulative roll bonding

Texture evolution of an Fe–Ni alloy sheet produced by cross accumulative roll bonding

Deformation mechanism of cryorolled Fe-36%Ni strip steel

Study of the microstructure and texture heterogeneities of Fe–48wt%Ni alloy severely deformed by equal channel angular pressing

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