Hostname: page-component-7bb8b95d7b-pwrkn Total loading time: 0 Render date: 2024-09-16T05:16:11.314Z Has data issue: false hasContentIssue false
  • English
  • Français

Ductility of cold-rolled and recrystallized Ni3Al foils

Published online by Cambridge University Press:  01 April 2005

Chuanyong Cui ,
Masahiko Demura ,
Kyosuke Kishida  and
Toshiyuki Hirano
Chuanyong Cui*
Affiliation:
Materials Engineering Laboratory, National Institute for Materials Science, Tsukuba 305-0047, Japan
Masahiko Demura
Affiliation:
Materials Engineering Laboratory, National Institute for Materials Science, Tsukuba 305-0047, Japan
Kyosuke Kishida
Affiliation:
Materials Engineering Laboratory, National Institute for Materials Science, Tsukuba 305-0047, Japan
Toshiyuki Hirano
Affiliation:
Materials Engineering Laboratory, National Institute for Materials Science, Tsukuba 305-0047, Japan
*
a) Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

The room-temperature ductility of 95% cold-rolled and recrystallized Ni3Al(Ni–24.0 at.% Al) foils was examined as a function of heat-treatment conditions. The cold-rolled, diffused Goss texture changed to a complicated, transitional texture in the early stage of grain growth and then returned to a similar diffused Goss texture in the late stage. With the texture evolution, the total area fraction of the tough grain boundaries (GBs) such as Σ1, Σ3, and Σ9 increased from 0.23–0.38 in the early stage to 0.56–0.73 in the late stage. Tensile and bending tests revealed that the ductility was drastically improved with the grain growth. The foils in the early stage fractured without showing yielding. In contrast, the foils in the late stage were very ductile, and the tensile elongation increased to 10% with the grain growth. It was confirmed that there was no in-plane anisotropy in ductility. The ductility improvement with the grain growth was ascribed to the increase in the area fraction of the tough GBs.

Keywords

DuctilityGrain boundariesIntermetallic alloys
Type
Research Article
Information
Journal of Materials Research , Volume 20 , Issue 4 , April 2005 , pp. 1054 - 1062
Copyright
Copyright © Materials Research Society 2005

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Demura, M., Suga, Y., Umezawa, O., Kishida, K., George, E.P. and Hirano, T.: Fabrication of Ni3Al thin foil by cold-rolling. Intermetallics 9, 157 (2001).CrossRefGoogle Scholar
2. Demura, M., Suga, U., Umezawa, O. and Hirano, T.: Room-temperature mechanical properties of cold-rolled thin foils of binary, stoichiometric Ni3Al. Metall. Mater. Trans A 33, 2607 (2002).CrossRefGoogle Scholar
3. Demura, M., Kishida, K., Suga, Y., Takanashi, M. and Hirano, T.: Fabrication of thin Ni3Al foils by cold rolling. Scripta Mater. 47, 267 (2002).CrossRefGoogle Scholar
4. Kishida, K., Demura, M., Suga, Y. and Hirano, T.: Orientation dependence of texture evolution in cold-rolled Ni3Al single crystals. Philos. Mag. 83, 3029 (2003).CrossRefGoogle Scholar
5. Hirano, T., Demura, M., Kishida, K., Kobayashi, S. and Suga, Y.: Mechanical properties of cold-rolled Ni3Al thin foils. Mater. Sci. Forum 426–432, 1727 (2003).CrossRefGoogle Scholar
6. Kobayashi, S., Demura, M., Kishida, K., and Hirano, T.: Bending ductility of heavily cold-rolled Ni3Al thin foils, in Defect Properties and Related Phenomena in Intermetallic Alloys, edited by George, E.P., Inui, H., Mills, M.J. and Eggeler, G.. (Mater. Res. Soc. Symp. Proc. 753, Warrendale, PA, 2003) BB5.20.1. p. 303.Google Scholar
7. Hirano, T., Demura, M., Kishida, K., Hong, H.U. and Suga, Y.: Mechanical properties of cold-rolled thin foils of Ni3Al, in Structural Intermetallics 2001, edited by Hemker, K.J., Dimiduk, D.M., Clemens, H., Darolva, R., Inui, H., Larsen, J.M., Sikka, V.K., Thomas, M., and Whittenberger, J.D. (The Minerals, Metals, and Materials Society, Warrendale, PA, 2001), p. 765.Google Scholar
8. Kobayashi, S., Demura, M., Kishida, K. and Hirano, T.: Bending and tensile deformation in Ni3Al heavily cold-rolled foil. Intermetallics 13(6), 608 (2005).CrossRefGoogle Scholar
9. Brandon, D.G.: The structure of high-angle grain boundaries. Acta Metall. 14, 1479 (1966).CrossRefGoogle Scholar
10. Su, J.Q., Demura, M. and Hirano, T.: Grain-boundary fracture strength in Ni3Al bicrystals. Philos. Mag. A 82, 1541 (2002).Google Scholar
11. Demura, M., Kishida, K., Xu, Y. and Hirano, T.: Texture development of Ni3Al thin foils during recrystallization and grain growth. Mater. Sci. Forum 467–470, 447 (2004).CrossRefGoogle Scholar
12. Schulson, E.M., Weihs, T.P., Viens, D.V. and Baker, I.: The effect of grain-size on the yield strength of Ni3Al. Acta Metall. 33, 1587 (1985).CrossRefGoogle Scholar
13. Takeyama, M. and Liu, C.T.: Effect of grain-size on yield strength of Ni3Al and other alloys. J. Mater. Res. 3, 665 (1988).CrossRefGoogle Scholar
14. George, E.P., Liu, C.T. and Pope, D.P.: Intrinsic ductility and environment embrittlement of binary Ni3Al. Scripta Metall. Mater. 28, 857 (1993).CrossRefGoogle Scholar
15. Hanada, S., Watanabe, S. and Izumi, O.: Deformation behavior of recrystallized Ni3Al. J. Mater. Sci. 24, 203 (1986).CrossRefGoogle Scholar
16. Liu, C.T.: Environmental embrittlement and grain-boundary fracture in Ni3Al. Scripta Metall. Mater. 27, 25 (1992).CrossRefGoogle Scholar
17. Watanabe, T.: An approach to grain-boundary design for strong and ductile polycrystals. Res. Mechanica 11(1), 47 (1984).Google Scholar
18. Watanabe, T., Hirano, T., Ochiai, T. and Oikawa, H.: Texture and grain boundary character distribution (GBCD) in B-free ductile polycrystalline Ni3Al. Mater. Sci. Forum 157–162, 1103 (1994).CrossRefGoogle Scholar
19. Escher, C., Neves, S. and Gottstein, G.: Recrystallization texture evolution in Ni3Al. Acta Mater. 46, 441 (1998).CrossRefGoogle Scholar
20. Chowdhury, S.G., Ray, R.K. and Jena, A.K.: Texture evolution during recrystallization in a boron-doped Ni76Al24 alloy. Mater. Sci. Eng. A277, 1 (2000).CrossRefGoogle Scholar