2010
DOI: 10.1016/j.msea.2010.04.027
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Microstructural evolution in an Al-6061 alloy processed by high-pressure torsion

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Cited by 126 publications
(81 citation statements)
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“…Loucif [5,6] and Moreno-Valle et al [7] used the HPT technique to fabricate ultrafine grains of Al 6061 alloy. The grain size was about 500 nm at room temperature (equivalent strain 4) [6], and reached 170 nm at cryogenic temperature [7].…”
Section: Microstructure Of Sheetsmentioning
confidence: 99%
See 1 more Smart Citation
“…Loucif [5,6] and Moreno-Valle et al [7] used the HPT technique to fabricate ultrafine grains of Al 6061 alloy. The grain size was about 500 nm at room temperature (equivalent strain 4) [6], and reached 170 nm at cryogenic temperature [7].…”
Section: Microstructure Of Sheetsmentioning
confidence: 99%
“…This is due to improved physical and mechanical properties inherent to nano-structure materials. SPD techniques such as Accumulative Roll Bonding (ARB) [1][2][3], Dissimilar Channel Angular Pressing (DCAP) [4], High-Pressure Torsion (HPT) [5][6][7], Equal Channel Angular Pressing (ECAP)/Equal Channel Angular Extrusion (ECAE) [8][9][10][11], etc have been developed to fabricate bulk nano-structure or ultrafine grain samples from different metals. Among the currently available SPD techniques, only the ARB technique is appropriate for production of continuous nanocrystalline and ultrafine grain strips and plates.…”
Section: Introductionmentioning
confidence: 99%
“…However, with increasing number of turns, the microstructures usually evolve toward homogeneity and many metals exhibit a complete homogeneity at high numbers of turns. Materials showing this behavior include Al, [3,[8][9][10][11][12][13] Cu, [14][15][16] Ti, [17][18][19] Mg, [20][21][22][23] Fe, [24][25][26] Ni, [27,28] and numerous others metals and alloys. [29,30] Nevertheless, some materials show a different type of behavior when processed by HPT.…”
Section: Introductionmentioning
confidence: 99%
“…Severe plastic deformation (SPD) is one of the novel thermo-mechanical processing techniques used for producing ultrafine grain microstructure (UFG) with superior mechanical properties in ferrous and non-ferrous alloy [2]. SPD techniques such as Accumulative roll bonding (ARB) [3][4][5][6][7][8][9], Equal channel angular pressing (ECAP) [10][11][12][13][14][15][16], Multi-axial forging (MAF) [17][18][19][20][21], Repetitive corrugation and straightening (RCS) [22][23][24][25][26][27], High-pressure torsion (HPT) [28][29][30][31][32][33][34], are routinely used for producing ultrafine grain materials; however, the limitations associated with these techniques for largescale products are due to requirement of severe plastic strain of the order of 5 or 6 at ambient or elevated temperatures, expensive tooling, and design difficulties. Hence, they are confined to mainly for producing smalllength scale products.…”
Section: Introductionmentioning
confidence: 99%