Phase Constitution and Mechanical Property of Ti-Cr and Ti-Cr-Sn Alloys Containing 3D Transition Metal Elements

Abstract:

Effects of 3d transition metal element additions on phase constitution at room temperature and mechanical properties of Ti-Cr and Ti-Cr-Sn alloys were investigated in this study. Ti-5Cr and Ti-5Cr-3Sn (in mol%) alloys with or without 3mol% of 3d-transition-metals of V, Mn, Fe, Co and Ni were investigated. X-ray diffraction analysis showed that Ti-5Cr binary and Ti-5Cr-3Sn ternary alloys consisted of α' (hcp) and β (bcc) two phases, and the others were β single phase. Then, the additions of the 3d transition metals stabilize  phase. The results were in good agreement with optical microscopy observation. Vickers hardness tests revealed hardening occurred by the additional elements, and the hardening must be mainly due to solid solution hardening. Besides, the hardness was lowered by 3mol%Sn addition. Tensile tests revealed that the additions of Fe, Co and Ni improve strength while V and Mn improve ductility.

• Periodical: Advanced Materials Research (Volumes 89-91)
• Pages: 307-312
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.89-91.307
• Online since: January 2010
• Authors: Yasuhiro Kusano, Tomonari Inamura, Hideki Hosoda, Kenji Wakashima, Shuichi Miyazaki
• Keywords: 3d Transition Metal, Cold Workability, Mechanical Property, Phase, Ti-Cr, Ti-Cr-Sn

References

[1] M. Geetha, A.K. Singh, R. Asokamani and A.K. Gogia: Prog. Mater. Sci., 54 (2009), p.397.

[2] Y. Horiuchi, T. Inamura, H. Y. Kim, S. Miyazaki, K. Wakashima and H. Hosoda: Mater. Trans. 47 (2006), p.1209.

[3] K. Kasuya, T. Inamura, H. Hosoda, K. Wakashima and S. Miyazaki: Proc. Intl. Conf. Shape Memory and Superelastic Technologies, ed. by S. Miyazaki, ASM Intl., OH, (2008), p.553.

[4] H. Saito, T. Inamura, K. Wakatsuki, H. Hosoda and S. Miyazaki: Proc. Inter. Conf. Shape Memory and Superelastic Technologies, ASM Intl., OH, USA, (2008), p.565.

[5] D. Sugano and M. Ikeda: Mat. Sci. Eng. C, 25 (2005), p.377.

[6] M. Ikeda, S. Masuda and M. Ogawa, Ti-2007 Science and Technology, edited by M. Ninomi, S. Akiyama, M. Ikeda, M. Hagiwara and K. Maruyama, The Japan Institute of Metals, Sendai, Japan, (2007), p.1433.

[7] H. Matsumoto, S. Watanabe, S. Hanada: Mat. Sci. Eng. A 448 (2007), p.39.

[8] G. Lütjering, J.C. Williams, in: Titanium (Springer-Verlag, Berlin Heidelberg 2003), p.22.

[9] M. Hansen, in: Constitution of Binary Alloys (ＭcGraw-Hill Book Co. New York, 1958).

[10] M. Niinomi: Mater. Sci. Eng. A 243 (1998), p.231.

[11] X. Liu, P.K. Chu, C. Ding: Mater. Sci. Eng. R 47 (2004), p.49. Fig. 6 Ultimate tensile strength and fracture strain evaluated using Fig. 5.