Hostname: page-component-745bb68f8f-5r2nc Total loading time: 0 Render date: 2025-02-05T21:25:25.715Z Has data issue: false hasContentIssue false
  • English
  • Français

In-Situ Heating Observations on Superlattice Dislocation in A Ni3(Al, Zr) Single Crystal

Published online by Cambridge University Press:  22 February 2011

Yi Liu ,
Yuefeng Gu ,
Dongliang Lin ,
Shipu Chen ,
Xiaoning Zhao  and
Jianming Hong
Yi Liu
Affiliation:
Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R. China Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P.R. China
Yuefeng Gu
Affiliation:
Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P.R. China
Dongliang Lin
Affiliation:
Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
Shipu Chen
Affiliation:
Department of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200030, P.R. China
Xiaoning Zhao
Affiliation:
Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P.R. China
Jianming Hong
Affiliation:
Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210008, P.R. China
Get access

Abstract

The TEM weak-beam technique has been used to investigate the behavior of dissociated superlattice dislocation in Ni3Al single crystal as a function of temperature. The observed dislocation with the Burgers vector of [110] partly dissociated on the (001) plane forming Kear-Wilsdorf (KW) lock. The dissociated pair did not indicate significant variation of separation in the temperature range from room temperature to 773K. but turned to form a jog at 773K. At 898K, which is near the peak temperature, the dissociated segment constricted completely. The experimental observations are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 364: Symposium L – High-Temperature Ordered Intermetallic Alloys–VI , 1994 , 321
Copyright
Copyright © Materials Research Society 1995

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

1. Takeuchi, S. and kuramoto, E., Acta Met.21, 415(1973).Google Scholar
2. Thornton, P.H., Davies, R.G. and Johnson, T.L., Metall.Trans. Al, 207(1970).Google Scholar
3. Paidar, V., Pope, D.P. and Vitek, V., Acta Met.32, 435(1984).Google Scholar
4. Kear, B. H. and Wilsdorf, H.G.F., Trans AIME 224,382(1962).Google Scholar
5. Yamaguchi, M., Paidar, V., Pope, D.P. and Vitek, V., Phil. Mag.A45, 867(1982).Google Scholar
6. Paidar, V., Yamaguchi, M., Pope, D.P. and Vitek, V., Phil. Mag.A45, 883(1982).Google Scholar
7. Yoo, M.H., Scripta Met.20,915(1986).Google Scholar
8. Hirsch, P.B., in High-Temperature Ordered Intermetallic Alloys V. edited by Baker, I., Darolia, R.. Whittenburger, J.D. and Yoo, M.H.(Mater. Res. Soc. Poc.288, Pittsburgh, PA ,1993) pp.33; Phil.Mag.A65, 569(1992).Google Scholar
9. Sanchez, J.M., Eng, S.,Wu, Y.P. and Tien, J.K., in High-Temperature Ordered Intermetallic Alloy II. edted by Stoloff, N.S., Koch, C.C., Liu, C.T. and Izumi, O.I.(Mater. Res. Soc. Proc.81, Pittsburgh, PA, 1987) pp.5; J.K. Tien, S. Eng and J.M. Sanchez, (Mater. Res. Soc. Proc.81, Pittsburgh, PA, 1987), pp.183.Google Scholar
10. Brown, N., Phil. Mag.4, 693(1959).Google Scholar
11. Davies, R.G. and Stoloff, N.S., Trans AIME 233, 714(1965).0Google Scholar
12. Korner, A., Phil. Mag. Lett.59, 3(1989).Google Scholar
13. Korner, A., Phil. Mag. Lett.60, 106(1989).Google Scholar
14. Wen, M. and Lin(T.L. Lin), D., Mater. Sci. Eng. A152, 209(1992).Google Scholar