Texture Evolution in Aluminum Sheet Subjected to Friction Roll Surface Processing and Subsequent Annealing

Preferred orientation formation in surface layer of aluminum sheet subjected to friction roll surface processing (FRSP) and temperature gradient annealing has been investigated by SEM/EBSD analysis. FRSP imposed severe shear strain in the surface layer of the aluminum sheet, where the indentation was selected as 0.1mm and the feeding speed was set as 0.3mm/s. The annealing with steep temperature gradient in longitudinal direction was applied to the small specimen of 12mm long, 10mm wide and 1mm thick, which made microstructural evolution concentrated to the nearest layer to the surface. Shear strain more than 10 was imposed at a site of 14μm beneath the surface. The temperature gradient more than 20K/mm was attained even for aluminum which has high thermal conductivity. The {100} pole of ND/TD (FRSP plane/FRSP direction) FRSPed specimen showed very weak intensity of <001>//ND while the {111} pole implies <110>//TD. In contrast, the shear texture component {111}<110> mainly evolved in the specimen subjected to FRSP and the ordinary annealing. Evolution of the component {111}<110> after the temperature gradient annealing were compared with that after the ordinary annealing in consideration of stored strain energy in each crystallographic orientation.

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Preferred orientation formation in surface layer of aluminum sheet subjected to friction roll surface processing and temperature gradient annealing

Takayama

Hamano

Arakawa

et al. 2019

J. Phys.: Conf. Ser.

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Texture evolution in aluminum sheet subjected to warm asymmetric rolling with one pass of high reduction and subsequent annealing

Takayama

Arakawa

Watanabe

et al. 2016

J.JILM

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Texture evolution in commercial purity aluminum sheet subjected to asymmetric rolling (ASR) with one pass of high reduction has been investigated. Warm ASR with high differential speed ratios of 2 and 2.5 was applied in order to impose strain for the annealed sheet after cold rolling. The sheet was asymmetrically rolled in the direction parallel to the original rolling direction (RD) or 45° from the rolling direction (RD+45°). The one pass ASR at a temperature ranging from 423 to 473 K imposed shear strain on the sheet. Finer grain structure in the faster roll side was formed by the warm ASR and subsequent annealing. The shear texture component E{111} 110 mainly evolved in the specimen subjected to ASR and annealing. The higher fraction of E component was obtained in the ASR direction of RD+45°, which was related to the initial texture before the ASR.

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機械系での材料科学・材料工学研究－高温変形と組織制御と接合技術

Takayama

2023

J.JILM

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Texture Evolution in Aluminum Sheet Subjected to Friction Roll Surface Processing and Subsequent Annealing

Cited by 3 publications

References 17 publications

Preferred orientation formation in surface layer of aluminum sheet subjected to friction roll surface processing and temperature gradient annealing

Preferred orientation formation in surface layer of aluminum sheet subjected to friction roll surface processing and temperature gradient annealing

Texture evolution in aluminum sheet subjected to warm asymmetric rolling with one pass of high reduction and subsequent annealing

機械系での材料科学・材料工学研究－高温変形と組織制御と接合技術

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