Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-23T13:23:45.219Z Has data issue: false hasContentIssue false
  • English
  • Français

Formation of nanocrystalline surface of a Cu–Zn alloy under electropulsing surface treatment

Published online by Cambridge University Press:  31 January 2011

X.N. Du ,
B.Q. Wang  and
J.D. Guo
X.N. Du
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
B.Q. Wang
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
J.D. Guo
Affiliation:
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, People’s Republic of China
Get access

Abstract

A nanocrystalline surface layer of a Cu–Zn alloy was developed by electropulsing (ECP) surface treatment. The average grain size was about 20 nm on the top surface layer and was gradually augmented with the increase in depth from the top surface. Nanoindentation measurements showed that the hardness was significantly enhanced on the top surface layer compared with the as-annealed Cu–Zn sample. The mechanism for the evolution of this structure and property was related not only to a solid-state phase transformation, but also to the effect of the enhancement of the nucleation rate and the skin effect during the ECP treatment. Therefore, the ECP surface treatment provides a promising method for obtaining surface self-nanocrystallization materials.

Keywords

Electrical propertiesNanostructurePhase transformation
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 7 , July 2007 , pp. 1947 - 1953
Copyright
Copyright © Materials Research Society 2007

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

1Lu, K. Lu, J.: Surface nanocrystallization (SNC) of metallic materials-presentation of the concept behind a new approach. J. Mater. Sci. Technol. 15, 193 1999Google Scholar
2Tao, N.R., Wang, Z.B., Tong, W.P., Sui, M.L., Lu, J. Lu, K.: An investigation of surface nanocrystallization mechanism in Fe induced by surface mechanical attrition treatment. Acta Mater. 50, 4603 2002CrossRefGoogle Scholar
3Wang, Z.B., Tao, N.R., Li, S., Wang, W., Liu, G., Lu, J. Lu, K.: Effect of surface nanocrystallization on friction and wear properties in low carbon steel. Mater. Sci. Eng., A 352, 144 2003CrossRefGoogle Scholar
4Liu, G., Wang, S.C., Lou, X.F., Lu, J. Lu, K.: Low carbon steel with nanostructured surface layer induced by high-energy shot peening. Scripta Mater. 44, 1791 2001CrossRefGoogle Scholar
5Wu, X., Tao, N., Hong, Y., Xu, B., Lu, J. Lu, K.: Microstructure and evolution of mechanically induced ultrafine grain in surface layer of Al-alloy subjected to USSP. Acta Mater. 50, 2075 2002CrossRefGoogle Scholar
6Villegas, J.C., Dai, K., Shaw, L.L. Liaw, P.K.: Nanocrystallization of a nickel subjected to surface severe plastic deformation. Mater. Sci. Eng., A 410–411, 257 2005CrossRefGoogle Scholar
7Dai, K., Villegas, J. Shaw, L.: An analytical model of the surface roughness of an aluminum alloy treated with a surface nanocrystallization and hardening process. Scripta Mater. 52, 259 2005CrossRefGoogle Scholar
8Zhou, Y.Z., Zhang, W., Wang, B.Q., He, G.H. Guo, J.D.: Grain refinement and formation of ultrafine-grained microstructure in a low-carbon steel under electropulsing. J. Mater. Res. 17, 2105 2002CrossRefGoogle Scholar
9Ho, P.S. Kwok, T.: Electromigration in metals. Rep. Prog. Phys. 52, 301 1989CrossRefGoogle Scholar
10Lai, Z.H., Conrad, H., Teng, G.Q. Chao, Y.S.: Nanocrystallization of amorphous Fe–Si–B alloys using high current density electropulsing. Mater. Sci. Eng., A 287, 238 2000CrossRefGoogle Scholar
11Zhou, Y.Z., Zeng, Y., He, G.H. Zhou, B.L.: The healing of quenched crack in 1045 steel under electropulsing. J. Mater. Res. 16, 17 2001Google Scholar
12Zhou, Y.Z., Qin, R.S., Xiao, S.H., He, G.H. Zhou, B.L.: Reversing effect of electropulsing on damage of 1045 steel. J. Mater. Res. 15, 1056 2000CrossRefGoogle Scholar
13Zhang, W., Zhou, Y.Z., Sui, M.L., He, G.H., Guo, J.D. Li, D.X.: Formation of nanoscale α-Al in a superdralumin under high current density electropulsing. J. Mater. Sci. Lett. 21, 1923 2002CrossRefGoogle Scholar
14Zhang, W., Sui, M.L., Zhou, Y.Z., Zhong, Y. Li, D.X.: Orientated nanometer-sized fragmentation of TiC particles by electropulsing. Adv. Eng. Mater. 4, 697 20023.0.CO;2-A>CrossRefGoogle Scholar
15Zhou, Y.Z., Zhang, W., Wang, B.Q., He, G.H. Guo, J.D.: Ultrafine-grained microstructure in a Cu–Zn alloy produced by electropulsing treatment. J. Mater. Res. 18, 1991 2003CrossRefGoogle Scholar
16Massalski, T.B., Okamoto, H., Subramanian, P.R. Kacprzak, L.: Binary Alloy Phase Diagrams 2nd ed. ASM International, Materials Park, OH 1990Google Scholar
17Sprecher, A.F., Mannan, S.L. Conrad, H.: On the temperature rise associated with the electroplastic effect in titanium. Scripta Metall. 17, 769 1983CrossRefGoogle Scholar
18Lu, L.P.: High energy pulse induction hardening. Heat Treat. Met. 9, 3 1986Google Scholar
19Xu, G.Y., An, Y.Z. Lu, L.B.: The study about the physical fundamental theories of induction pulse heating. Trans. Met. Heat Treat. 12, 1 1991Google Scholar
20Liu, X.B. Lou, W.H.: Research on skin effect of electric current. J. Yueyang Normal Univ. (Nat. Sci.) 15, 31 2002Google Scholar
21He, G.S. Xiao, X.G.: The skin effect of industrial frequency current and its application. College Phys. 15, 7 1996Google Scholar