Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-24T15:41:54.922Z Has data issue: false hasContentIssue false
  • English
  • Français

Simultaneously increasing the strength and ductility of the modified casting Al–Cu alloy

Published online by Cambridge University Press:  31 January 2011

Wengui Zhao ,
Huiyuan Wang ,
Jinguo Wang ,
Yong Li  and
Qichuan Jiang
Wengui Zhao
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun 130025, People’s Republic of China
Huiyuan Wang
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun 130025, People’s Republic of China
Jinguo Wang
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun 130025, People’s Republic of China
Yong Li
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun 130025, People’s Republic of China
Qichuan Jiang*
Affiliation:
Key Laboratory of Automobile Materials, Ministry of Education and Department of Materials Science and Engineering, Jilin University, Changchun 130025, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: [email protected]
Get access

Abstract

A modified casting Al–Cu alloy with ultrahigh tensile strength and ductility of about 520 MPa and 13.5% was obtained by PrxOy addition. PrxOy was decomposed to form AlPrO3, which acted as the effective heterogeneous nuclei for the crystallization of the primary α–Al phase. The main reason for the simultaneous increase in the strength and ductility of the modified alloy may be attributed to the effect of a large number of regular, network, and homogeneous nanoscale θ′ phase precipitates and more crystal grain and dendrite boundaries formed by their refinement on restricting and impeding the dislocation actuation and movement.

Keywords

AlDuctilityStrength
Type
Articles
Information
Journal of Materials Research , Volume 23 , Issue 4 , April 2008 , pp. 1076 - 1081
Copyright
Copyright © Materials Research Society 2008

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

1Zhang, L-C., Lu, H-B., Mickel, C.Eckert, J.: Ductile ultrafine-grained Ti-based alloys with high yield strength. Appl. Phys. Lett. 91, 051906 2007CrossRefGoogle Scholar
2Koch, C.C.: Ductility in nanostructured and ultra fine-grained materials: Recent evidence for optimism. J. Metastable Nanocryst. Mater. 18, 9 2003Google Scholar
3Valiev, R.: Materials science: Nanomaterial advantage. Nature 419, 887 2002CrossRefGoogle ScholarPubMed
4Wu, G., Yao, L-J., Li, Z-X., Peng, R-Q., Zhao, Z-D.: Handbook of Al and Al Alloys, 2nd ed.Science Press Beijing, China 1997 320Google Scholar
5Huang, H-Y.: Handbook of Foundry, 3rd ed.China Machine Press Beijing, China 1995 102Google Scholar
6Lu, J., Liu, B-C., Yang, K.Dai, S-L.: The study of cast Aluminum alloy with high strength and toughness. Foundry 49 66 (2000, in Chinese)Google Scholar
7Bramfitt, B.L.: The effect of carbide and nitride additions on the heterogeneous nucleation behavior of liquid iron. Metall. Trans. 1, 1987 1970CrossRefGoogle Scholar
8Wang, Y-M., Ma, E.Chen, M-W.: Enhanced tensile ductility and toughness in nanostructured Cu. Appl. Phys. Lett. 80, 2395 2002CrossRefGoogle Scholar
9Zhao, Y-H., Liao, X-Z., Cheng, S., Ma, E.Zhu, Y.T.: Simultaneously increasing the ductility and strength of nanostructured alloys. Adv. Mater. 18, 2280 2006CrossRefGoogle Scholar
10Shan, F-L., Gao, Z-M.Wang, Y-M.: Microhardness evaluation of Cu–Ni multilayered films by x-ray diffraction line profile analysis. Thin Solid Films 324, 162 1998CrossRefGoogle Scholar
11Zhang, L-C., Das, J., Lu, H-B., Duhamel, C., Calin, M.Eckert, J.: High strength Ti–Fe–Sn ultrafine composites with large plasticity. Scripta Mater. 57, 101 2007CrossRefGoogle Scholar