TY - JOUR
T1 - Phase transformations in Fe1-2xAlxVx (x≤0.15) alloys
AU - Ferreiros, Pedro
PY - 2015/7/2
Y1 - 2015/7/2
N2 - Iron rich Fe-Al-V alloys have a considerable potential as structural materials at high temperatures. In previous works we have studied the phase equilibria in the bcc system Fe-Al-V, from computational thermodynamics calculations. There, the vertical section Fe1-2XAlXVX was defined as the best candidate to design alloys with technological application, due to its wide (A2+L21) two-phase field. In this paper, experimental techniques of Differential Scanning Calorimetry (DSC) and Transmission Electron Microscopy (TEM) are used to find the phase equilibria in Fe1-2XAlXVX section up to 1100 °C and X≤0.15. The A2/B2 order-disorder transformation was confirmed, the limits of two-phase fields (A2+L21) and (L21+B2) with L21 as coherent precipitate were established, and evidence of a small (A2+B2) field previously unknown was found. The experimental assessment of these phase equilibria opens the way to the design of these alloys and their possible heat treatments.
AB - Iron rich Fe-Al-V alloys have a considerable potential as structural materials at high temperatures. In previous works we have studied the phase equilibria in the bcc system Fe-Al-V, from computational thermodynamics calculations. There, the vertical section Fe1-2XAlXVX was defined as the best candidate to design alloys with technological application, due to its wide (A2+L21) two-phase field. In this paper, experimental techniques of Differential Scanning Calorimetry (DSC) and Transmission Electron Microscopy (TEM) are used to find the phase equilibria in Fe1-2XAlXVX section up to 1100 °C and X≤0.15. The A2/B2 order-disorder transformation was confirmed, the limits of two-phase fields (A2+L21) and (L21+B2) with L21 as coherent precipitate were established, and evidence of a small (A2+B2) field previously unknown was found. The experimental assessment of these phase equilibria opens the way to the design of these alloys and their possible heat treatments.
UR - http://dx.doi.org/10.1016/j.mspro.2015.04.161
U2 - 10.1016/j.mspro.2015.04.161
DO - 10.1016/j.mspro.2015.04.161
M3 - Conference article
SN - 2211-8128
SP - 994
EP - 103
JO - Procedia Materials Science
JF - Procedia Materials Science
ER -