Formability and Mechanical Property of Aluminum Sheets Locally Surface-Modified by the Concept of Surface Friction Joining

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Formability and mechanical property of Al sheets whose surface was locally modified by the concept of SFJ (Surface Friction Joining) were analyzed. It is noteworthy that the formability of the surface-modified sheets is greatly improved compared with as-received sheets. The formability is improved as the tool diameter is increased. It is found that more plastic deformation is accommodated at modified region during LDH test.

Info:

Periodical:

Advanced Materials Research (Volumes 26-28)

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

401-404

Citation:

C. G. Lee et al., "Formability and Mechanical Property of Aluminum Sheets Locally Surface-Modified by the Concept of Surface Friction Joining", Advanced Materials Research, Vols. 26-28, pp. 401-404, 2007

Online since:

October 2007

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$38.00

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[6] J. H. Driver, D. J. Jensen, and N. Hansen: Acta Metall., vol. 42 (1994), p.3105 Fig. 1. Concept of the local surface-modification. 1: sheet, 2: tool, 3: locally surface-modified region 4: plastic zone.

[1] [2] [3] [4] [1] [2] [3] [4] [0] [5] [10] [15] [20] [25] [30] Tool Diameter 5052 Al, 1. 5mmt 1, 600RPM, 100mm/min. RR specimen 23. 7 22. 6 19. 5 18. 4 10mm 8mm 5mm AR LDH (mm).

[5] [10] [15] [20] [25] [30] Tool Diameter 13. 8 14. 8 16. 5 18. 4 AR 10mm 8mm 5mm 5052 Al, 1. 5mmt 1, 600RPM, 100mm/min. RT specimen LDH (mm) (a)(a)(a)(a) (b)(b)(b)(b).

[5] [10] [15] [20] [25] [30] Tool Diameter 5052 Al, 1. 5mmt 1, 600RPM, 100mm/min. RR specimen 23. 7 22. 6 19. 5 18. 4 10mm 8mm 5mm AR LDH (mm).

[5] [10] [15] [20] [25] [30] Tool Diameter 13. 8 14. 8 16. 5 18. 4 AR 10mm 8mm 5mm 5052 Al, 1. 5mmt 1, 600RPM, 100mm/min. RT specimen LDH (mm) (a)(a)(a)(a) (b)(b)(b)(b) Fig. 2. LDH values of the locally surface-modified 5052-H32 Al sheets compared to the as-received sheet. 0. 00 0. 05 0. 10 0. 15 0. 20 0. 25.

100 200 300 400 AR 10mm 8mm 5mm 5052 Al, 1. 5mm thick. True stress (MPa) True strain Fig. 3. True stress-true strain curves of the locally surface-modified regions and the base metal (AR).

DOI: https://doi.org/10.2172/815195