TY - GEN
T1 - Texture evolution during grain growth of magnesium alloy AZ3IB
AU - Bhattacharyya, J. J.
AU - Radhakrishnan, B.
AU - Muralidharan, G.
AU - Agnew, S. R.
PY - 2014
Y1 - 2014
N2 - The strong basal texture which develops during the rolling of Mg alloy, AZ31B, sheet persists and can even increase during annealing. The present study was designed to elucidate the mechanism of texture evolution during grain growth. The grain growth kinetics were determined for temperatures between 260 and 450 °C revealing a grain growth exponent, n∼4. The activation energy for grain growth was found to be close to the activation energy for grain boundary diffusion. Abnormal grain growth was observed as a broadening of the normalized grain size distribution at 400 and 450 °C. However, no temporal correlation was found between the peak in texture intensity and the peak in the width of the normalized distribution. Rather, the abnormal grain growth appears to correlate with the coarsening of second phase particles, which are present in the microstructure. The texture evolution is speculated to be due to anisotropy of grain boundary energy and mobility.
AB - The strong basal texture which develops during the rolling of Mg alloy, AZ31B, sheet persists and can even increase during annealing. The present study was designed to elucidate the mechanism of texture evolution during grain growth. The grain growth kinetics were determined for temperatures between 260 and 450 °C revealing a grain growth exponent, n∼4. The activation energy for grain growth was found to be close to the activation energy for grain boundary diffusion. Abnormal grain growth was observed as a broadening of the normalized grain size distribution at 400 and 450 °C. However, no temporal correlation was found between the peak in texture intensity and the peak in the width of the normalized distribution. Rather, the abnormal grain growth appears to correlate with the coarsening of second phase particles, which are present in the microstructure. The texture evolution is speculated to be due to anisotropy of grain boundary energy and mobility.
KW - Abnormal grain growth
KW - Crystallographic texture
KW - Magnesium alloy
UR - http://www.scopus.com/inward/record.url?scp=84899869327&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84899869327
SN - 9781118888162
T3 - Magnesium Technology
SP - 233
EP - 238
BT - Magnesium Technology 2014 - Held During TMS 2014 143rd Annual Meeting and Exhibition
PB - Minerals, Metals and Materials Society
T2 - Magnesium Technology 2014 - TMS 2014 143rd Annual Meeting and Exhibition
Y2 - 16 February 2014 through 20 February 2014
ER -