Effects of Continuous Extrusion on Microstructure Evolution and Property Characteristics of Brass Alloy

Abstract:

The continuous extrusion process would refine the microstructure effectively and increase the formability and properties of extrusion products, without preheating and post-mechanical treatment. During the continuous extrusion operation the microstructure of brass alloy significantly influences formability and properties. So the microstructure evolution rules of brass alloy during the whole continuous extrusion process were analyzed, and the hardness changing laws of the extruded brass alloy were also researched in this paper. By observing the microstructure evolution at different regions, the evolution rules of microstructure and properties of the continuous extrusion brass alloy were obtained. It was found that the dynamic recrystallization occurred at the right-angle bending region, which was proved by the hardness evolution of the extruded brass alloy. Therefore, it is feasible to control the properties of the extruded products by concentrating the right-angle bending region. This work gives the researching foundation of low formability materials based on continuous extrusion operation.

• Periodical: Advanced Materials Research (Volumes 189-193)
• Pages: 2921-2924
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.189-193.2921
• Online since: February 2011
• Authors: Bing Li, Chun Hai Li, Xiang Jun Yao, Bao Yun Song
• Keywords: Brass Alloy, Continuous Extrusion, Hardness, Micro-Structure Evolution

References

[1] B.Y. Song, Z.X. Fan and C.H. Zhou: Ad. Technol. Plas., Vol. 1 (1990) , p.447.

[2] B.Y. Song, Y.L. He, G.R. Bai: Met. and Mater., Vol. 4, (1998), p.261.

[3] T. Reinikainen, K. Andersson, S. Kivivuori and A. S. Korhonen: J. Mater. Process. Technol., Vol. 34(1992), p.101.

[4] Y.H. Kim, J.R. Cho, H.S. Jesong , K.S. Kim, and S.S. Yoon: J. Mater. Process. Technol., Vol. 80-81(1998), p.671.

[5] Y.H. Kim, J.R. Cho, K.S. Kim, H.S. Jesong and S.S. Yoon: J. Mater. Process. Technol., Vol. 97(2000), p.153.

[6] J.R. Cho and H.S. Jesong: J. Mater. Process. Technol., Vol. 104(2000), p.236.

[7] J.R. Cho and H.S. Jesong: J. Mater. Process. Technol., Vol. 110 (2001), p.53.

[8] F. Gao, B.Y. Song, C.B. Jia and Y.H. Wang: ACTA Metal. SINICA (English Letters), Vol. 12 (1999), p.802.

[9] T. Manninen, T. Katajarinne and P. Ramsay: Vol. 177 (2006), p.600.

[10] T. Katajarinne, T. Manninen and P. Ramsay: J. Mater. Process. Technol., Vol. 177 (2006), p.604.

[11] P.Y. Wu, S.S. Xie , H.Q. Li, M. Yan, G.J. Huang and L. Cheng: Trans. Nonfer. Metal. Soc. China, Vol. 17 (2007), p.280.