Preparation and Characteriziation of Cu-Cr Alloy Powders

Abstract:

Cu-1.37Cr alloy powders were prepared by gas atomization process, and the cooling rates of alloy powders were calculated through the convection heat transfer principle. The morphology, distribution of alloy elements and microstructure of Cu-1.37Cr alloy powders were characterized by X-ray diffractometer and Scanning Electron Microscope (SEM).The results show that the cooling rate increases from 9.75×10³ to 1.08×10⁵ K/s as grain size decreases from 150 to 45µm. The morphology of alloy powders are spherical or similar spherical shape along with smooth surfaces. The grains have uniform size, and Cr particles are uniformly distributed in Cu matrix. With decrease of particle sizes, the diffraction angle shifts into small angle, suggesting that the larger solubility of Cr in Cu phase.

• Periodical: Advanced Materials Research (Volume 571)
• Pages: 60-64
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.571.60
• Online since: September 2012
• Authors: Peng Xiao, Xiao Yu Zhang, Hong Wei Lu
• Keywords: Cooling Rate., Cu-Cr Alloy Powders, Gas Atomization

References

[1] Z. Zhao, X. J. Li, G. Tao. Trans. Nonferrous Met. Soc. China Vol. 19 (2009), p.626.

[2] Y. H. Wang, Z. B. Sun, X. Zhou, X. P. Song. Rare Metal Materials and Engineering Vol. 8 (2006), p.1289.

[3] J. Feng, J.C. Chen, J. Yu, B. Xiao, Q. Li, X.L. Zhou. Rare Metal Materials and Engineering Vol. 2 (2009), p.281.

[4] A. Lamperti, P.M. Ossi V.P. Rotshtein. Surface & Coasting Technology Vol. 200 (2006), p.6373.

[5] J. Gao, Y.P. Wang, Z.M. Zhou, M. Kolbe. Materials Science and Engineering Vol. 449 (2007), p.654.

[6] S.X. Xiu, R. Yang, J. Xue, J.X. Wang, J.Y. Wang. Trans. Nonferrous Met. Soc. China Vol. 21 (2011), p.389.

[7] Muller R. Siemens For Schu Entwickl-Ber Vol. 17( 1988), p.105.

[8] Q. Li, B. Ma, L. Li, G.J. Huang, C.L. Chen, S.S.X. Rare Metal Materials and Engineering Vol. 2 (2011), pp.132-134.

[9] HWAN Kyun Yeo, SANG Ho Ahn, and KWAN Hee Han. Advanced Materials Research Vol. 26-27(2007) pp.469-472.

[10] C. Tian, L. Yang, G.Y. Chen, J.Z. Zhao. Chinese Journal of Materials Research Vol. 6 (2005), pp.639-643.

[11] J.P. Zhang, J.C. Chen, Y.L. Ai, L.P. Chen. Heat Treatment of Metals Vol. 10 (2006), pp.66-68.

[12] W.X. He, E.D. Wang, L.X. Hu, Y. Yu, H.F. Sun. Journal of Materials Processing Technology Vol. 208 (2008), pp.205-210.

[13] J.Q. Tan, H.M. Jiang, D.F. Xiao, F.X. Yu, W. Chen Q.X. Zhang. Special Casting & Nonferrous Alloys Vol. 8 (2007), pp.645-646.

[14] Z.M. Zhou , Y.P. Wang , J. Gao , M. Kolbe. Materials Science and Engineering A 398 (2005) 318-322.

[15] Z.M. Zhou, Y.P. Wang, H. Xia, J. Zhan. Materials Review Vol. 3(2008), pp.44-47.

[16] B.D. Zhou, Z.D. Xie, J. Shen. Materials Science & Technology Vol. 2(2004), pp.190-192.

[17] S.W. He, Y. Liu, S. Guo. Rare Metal Materials and Engineering Vol. 1(2009), pp.353-356.

[18] Y.A. Zhang, B.Q. Xiong, H.W. Liu, L.K. Shi, L.Y. Xia, B.L. Jiang, C.L. Hu. Chinese Journal of Rare Metals Vol. 4(2002), pp.245-248.

[19] Z.J. Gao, G.Q. Zhang, Z. Li, H. Yuan, W.Y. Xu, Y. Zhang, N. Liu. Powder Metallurgy Technology Vol. 2( 2011), pp.93-97.