The TEM and HRTEM were utilized to investigate the phase transformation of hydrogenated Ti-6Al-4V alloys (0 wtpct-0.9 wt pct H) treated by annealing and quenching from β field. The results indicate that the orthorhombic α'' martensite and β phase appear progressively with the increase of hydrogen concentration. On the other hand, hydrides with sizes of 2-5 nm are observed in the specimens containing more than 0.6 wt pct hydrogen. The formation of α'' and twins can be attributed to the internal stress caused by solid solution of hydrogen and hydrides precipitation.
WENLONG -zhou
. TEM investigations on hydrogen induced phasetransformation in Ti-6Al-4V alloys[J]. Acta Metallurgica Sinica (English Letters), 2010
, 23(5)
: 357
-362
.
DOI: 10.11890/1006-7191-105-357
[1] W.R. Kerr, P.R. Smith, M.E. Rosenblum, F.J.Gurney, Y.R. Mahajah and L.R. Bidwell, In: H. kimura and O. Izumi (Eds), Titanium' 80 Science and Technology (TMS-AIME,Warrendale, Tokyo, 1980) p.2477.
[2] V.A. Goltsov, J Alloy Compd 293 (1999) 844.
[3] O.N. Senkov and F.H. Froes, Int J Hydrogen Energy 24 (1999) 565.
[4] O.N. Senkov, J.J. Jonas and F.H. Froes, JOM 48(7) (1996) 42.
[5] D. Eliezer, N. Eliaz, O.N. Senkov and F.H. Froes, Mater Sci Eng A 280 (2000) 220.
[6] A.A. Ilyin, S.V. Skvortsova, A.M. Mamonov and M.Yu.Kollerov, Mater Sci 42(3) (2006) 316.
[7] J.I. Qazi, O.N. Senkov, J. Rahim and F.H. Froes, Mater Sci Eng A 359 (2003) 137.
[8] C.T. Liu, T.I. Wu and J.K. Wu, Mater Chem Phys 110 (2008) 440.
[9] Z.G. Sun, H.L. Hou, W.L. Zhou, Y.Q. Wang and Z.Q. Li, J Alloy Compd 476 (2008) 550.
[10] J.M. Manero, F.J. Gil and J.A. Planell, Acta Mater 48 (2000) 3353.
[11] L.S. Luo, Y.Q. Su, J.J. Guo and H.Z. Fu, J Alloy Compd 425 (2006) 140.
[12] D.B. Shan, Y.Y. Zong, T.F. Lu and Y. Lv, J Alloy Compd 427 (2007) 229.
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