TY - JOUR
T1 - Suppression of crystallization in a Ca-based bulk metallic glass by compression
AU - Naeem, Muhammad
AU - Lan, Si
AU - Wang, B.
AU - Wei, X.Y.
AU - Zhou, J.
AU - Ren, Y.
AU - Lu, Z.P.
AU - Ma, Dong
AU - Stoica, A.D.
AU - Wang, Xun-Li
PY - 2018/10/15
Y1 - 2018/10/15
N2 - We have studied the crystallization kinetics of Ca40Mg25Cu35 bulk metallic glass under isothermal annealing in the supercooled liquid region, with and without applied stress, by in-situ high-energy synchrotron x-ray diffraction. We observed that without stress, crystallization started from the very beginning of isothermal annealing. However, when a uniaxial compressive stress was applied during isothermal annealing, no change in atomic order was observed at the beginning. Thereafter, the glassy structure relaxed, but still without noticeable evidence of crystallization. It is suggested that the applied compressive stress restricted the atomic mobility, which suppressed crystallization.
AB - We have studied the crystallization kinetics of Ca40Mg25Cu35 bulk metallic glass under isothermal annealing in the supercooled liquid region, with and without applied stress, by in-situ high-energy synchrotron x-ray diffraction. We observed that without stress, crystallization started from the very beginning of isothermal annealing. However, when a uniaxial compressive stress was applied during isothermal annealing, no change in atomic order was observed at the beginning. Thereafter, the glassy structure relaxed, but still without noticeable evidence of crystallization. It is suggested that the applied compressive stress restricted the atomic mobility, which suppressed crystallization.
UR - https://scholars.cityu.edu.hk/en/publications/suppression-of-crystallization-in-a-cabased-bulk-metallic-glass-by-compression(d9c6ff18-2285-4261-a677-130be346ca1c).html
U2 - 10.1016/j.jallcom.2018.06.200
DO - 10.1016/j.jallcom.2018.06.200
M3 - Article
SN - 0925-8388
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -