TY - JOUR
T1 - Crystallization of the AlMn icosahedral phase
AU - Kelton, K. F.
AU - Holzer, J. C.
PY - 1988/3
Y1 - 1988/3
N2 - Differential scanning calorimetry (DSC) measurements of the crystallization kinetics of the icosahedral phase (i-phase) in AlxMn100-x alloys for 78 ≤ x ≤ 90 are presented. Transmission electron microscopy (TEM) investigations show that for x > 82, the i-phase occurs as dendrites that are surrounded by α-Al. For x<82, the decagonal phase appears in competition with the i-phase and completely replaces it by x=78. For one composition, Al86Mn14, the transformation kinetics and morphology were studied by electrical resistivity and DSC measurements, TEM and X-ray diffraction. The non-isothermal DSC data are fit using a numerical model. From these fits, we present crude estimates of the activation energy for the diffusion of aluminum in Al6Mn and a lower bound on the i-phase, Al6Mn interfacial energy.
AB - Differential scanning calorimetry (DSC) measurements of the crystallization kinetics of the icosahedral phase (i-phase) in AlxMn100-x alloys for 78 ≤ x ≤ 90 are presented. Transmission electron microscopy (TEM) investigations show that for x > 82, the i-phase occurs as dendrites that are surrounded by α-Al. For x<82, the decagonal phase appears in competition with the i-phase and completely replaces it by x=78. For one composition, Al86Mn14, the transformation kinetics and morphology were studied by electrical resistivity and DSC measurements, TEM and X-ray diffraction. The non-isothermal DSC data are fit using a numerical model. From these fits, we present crude estimates of the activation energy for the diffusion of aluminum in Al6Mn and a lower bound on the i-phase, Al6Mn interfacial energy.
UR - https://www.scopus.com/pages/publications/0023966827
U2 - 10.1016/0025-5416(88)90362-X
DO - 10.1016/0025-5416(88)90362-X
M3 - Article
AN - SCOPUS:0023966827
SN - 0025-5416
VL - 99
SP - 389
EP - 392
JO - Materials Science and Engineering
JF - Materials Science and Engineering
IS - 1-2
ER -