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Recovery by triple junction motion in aluminium deformed to ultrahigh strains by Tianbo Yu, Niels Hansen, and Xiaoxu Huang Proceedings A Volume 467(2135):3039-3065.

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Presentation on theme: "Recovery by triple junction motion in aluminium deformed to ultrahigh strains by Tianbo Yu, Niels Hansen, and Xiaoxu Huang Proceedings A Volume 467(2135):3039-3065."— Presentation transcript:

1 Recovery by triple junction motion in aluminium deformed to ultrahigh strains by Tianbo Yu, Niels Hansen, and Xiaoxu Huang Proceedings A Volume 467(2135):3039-3065 November 8, 2011 ©2011 by The Royal Society

2 (a) An illustration of the rolling geometry, where RD is the rolling direction, ND is the normal direction and TD is the transverse direction. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

3 Illustrations and examples of three types of triple junctions in lamellar structures. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

4 (a) A selected area in the longitudinal section of aluminium deformed to a strain of 5.5. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

5 (a) An illustration of a lamellar boundary structure in the longitudinal section, where the lamellar boundary (red) spacing is D, the interconnecting boundary (cyan) spacing is l (the lamella ends are also included for this measurement), and the lamella len... Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

6 Triple junction density in pure nickel deformed by cold rolling to various strains. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

7 TEM measurements of triple junction density in AA1200 (strains 2 and 4) and AA1050 (strain 5.5) aluminium. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

8 (a) A TEM micrograph montage of a selected area in the longitudinal section of aluminium deformed to a strain of 5.5. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

9 Ex situ TEM observations of Y-junction motion in the longitudinal section of aluminium deformed to a strain of 5.5 and annealed at 120°C. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

10 Ex situ TEM observations of Y-junction motion in the longitudinal section of aluminium deformed to a strain of 5.5 and annealed at 120°C. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

11 Ex situ TEM observations of Y-junction motion in the longitudinal section of aluminium deformed to a strain of 5.5 and kept at room temperature for 6, 16 and 62 days. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

12 Ex situ TEM observations of Y-junction motion in the longitudinal section of aluminium deformed to a strain of 5.5 and annealed at 220°C. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

13 (a) A selected area in the longitudinal section of aluminium deformed to a strain of 5.5 and annealed at 120°C for 10 h. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

14 Dependence of the dihedral angle on the lamella spacing of Y-junctions in aluminium deformed to a strain of 5.5. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

15 Examples of Y-junction motion in the longitudinal section (ND–RD plane) of aluminium deformed to strains (a) 2, (b) 4 and (c) 5.5 and annealed at 120°C for 5 h. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

16 (a) Evolution of the lamellar boundary spacing (both in the sample interior and at the surface) and the Y-junction density during isothermal annealing at 220°C for AA1050 aluminium deformed to a strain of 5.5. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

17 Normalized grain boundary surface tension as a function of the dihedral angle at a Y-junction. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

18 A sketch illustrating structural coarsening via Y-junction motion. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society

19 Evolution of the skewness of the lamellar boundary spacing distribution in the strain 5.5 aluminium during isothermal annealing at 220°C. Tianbo Yu et al. Proc. R. Soc. A 2011;467:3039-3065 ©2011 by The Royal Society


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