The Influence of Processing Conditions on Hardness Homogeneity Evolution in Commercially Pure Cast Aluminium Processed by ECAP

Article Preview

Abstract:

Commercially pure cast aluminium was subjected to equal channel angular pressing (ECAP) at room temperature using routes A, Bc and C. Microhardness distribution maps were produced on sections of extruded billets after one, two, three and four passes for each of the processing routes. It was found that the mean hardness increased significantly already after the first pass. With subsequent passes, the hardness increase was smaller but the hardness distribution became narrower, indicating increasing homogeneity. For route Bc, a slight decrease in average hardness was observed after the fourth pass. The mean hardness after four passes was highest for the route C sample, followed by the route A and route Bc samples.

You might also be interested in these eBooks

Info:

Periodical:

Materials Science Forum (Volumes 654-656)

Pages:

1211-1214

Citation:

Online since:

June 2010

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2010 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] V.M. Segal: Mater. Sci. Eng. Vol. A271 (1999), p.322.

Google Scholar

[2] M. Furukawa, Z. Horita, M. Nemoto, T.G. Langdon: J. Mater. Sci. Vol. 36 (2001), p.2835.

Google Scholar

[3] R.Z. Valiev and T.G. Langdon: Prog. Mater. Sci. Vol 51 (2006), p.881.

Google Scholar

[4] R.Z. Valiev, Y. Estrin, Z. Horita, T.G. Langdon, M.J. Zehetbauer and Y. T, Zhu: JOM Vol. 58 No. 4 (2006), p.33.

Google Scholar

[5] C. Xu and T.G. Langdon: Scripta. Mater. Vol. 48 (2003), p.1.

Google Scholar

[6] C. Xu, M. Furukawa, Z. Horita and T.G. Langdon: Mater. Sci. Eng. Vol. A398 (2005), p.66.

Google Scholar

[7] P. Leo, E. Cerri, H. McQueen, P. De Marco: Mater. Sci. Forum Vols. 519-521 (2006), p.1415.

Google Scholar

[8] M. Prell, C. Xu, T.G. Langdon: Mater. Sci. Eng A480 (2008), p.449. Route A BM P1 P2 P3 P4 Microhardness (HV100g).

Google Scholar

[20] [25] [30] [35] [40] [45] [50] [55] [60] Route BC BM P1 P2 P3 P4 P5 P8 Microhardness (HV100g).

Google Scholar

[20] [25] [30] [35] [40] [45] [50] [55] [60] Route C BM P1 P2 P3 P4 Microhardness (HV100g).

Google Scholar

[20] [25] [30] [35] [40] [45] [50] [55] [60] Pass 4 A-P4 Bc-P4 C-P4 Microhardness (HV100g).

Google Scholar

[35] [40] [45] [50] [55] [60] [65] (a) (b) (c) (d).

Google Scholar