Abstract
Ferrotitanium can be produced as a method of recycling Ti scraps. The eutectic composition of ferrotitanium, Fe29.5Ti70.5, can be obtained as a nanocrystalline phase due to relatively low melting point. Fe29.5Ti70.5 in which FeTi and β-Ti form a lamellar structure have high strength but low strain. To improve this, impurities were removed through hydrogen plasma arc melting (HPAM) and annealed. HPAM can remove substitutional/interstitial solid solutions. As a result, from 6733 ppm to 4573 ppm of initial impurities were removed by HPAM process. In addition, the strain was improved by spheroidizing and coarsening the lamellar structure through annealing. The effect of impurities removed through HPAM on the Young’s modulus, yield strength, and strain was observed.
Go to article
Bibliography
[1] J.M. Park, D.H. Kim, K.B. Kim, N. Mattern, J. Eckert, J. Mater. Res. 26, 365 (2011).
[2] M. Dao, L. Lu, R. Asaro, J.T. M. De Hosson, E. Ma, Acta Mater. 55, 4041 (2007).
[3] K . Bensadok, S. Benammar, F. Lapicque, G. Nezzal, J. Hazard. Mater. 152, 423 (2008).
[4] J. Chae, J.-M. Oh, S. Yoo, J.-W. Lim, Korean J. Met. Mater. 57, 569 (2019).
[5] J.-M. Oh, K.-M. Roh, J.-W. Lim, J. Hydrog. Energy 41, 23033 (2016).
[6] J.-M. Oh, B.-K. Lee, C.-Y. Suh, J.-W. Lim, J. Alloy. Compd. 574, 1 (2013).
[7] J.-W. Lim, G.-S. Choi, K. Mimura, M. Isshiki, Met. Mater. Int. 14, 539 (2008).
[8] K . Mimura, S.-W. Lee, M. Ishiki, J. Alloy. Compd. 211, 267 (1995).
[9] M.W. Chase Jr, W. Malcom, NIST-JANAF Thermochemical Table, 4th ed, J. Phys. Chem. Ref. Deta, Mohograph 9, 154, 1537, 1759, 1776 (1995).
[10] J. Das, K. Kim, F. Baier, W. Lӧser, J. Eckert, Appl. Phys. Lett. 87, 161907 (2005).
Go to article
en
pl
