Order-disorder in Fe₃Al at various temperatures induced by neutron irradiation
|Institution:||Missouri University of Science and Technology|
|Full text PDF:||http://hdl.handle.net/10355/18698|
"Resistivity measurements were made on ordered and disordered Fe₃Al samples while irradiated by neutrons. In the ordered as well as the disorder state, the different Fe₃Al samples were heated to 100, 150, 200, 250, and 300⁰C respectively, and were irradiated by a fast neutron flux of 0.534 x 10£⁰ neutrons/cmø-sec. The ordered Fe₃Al measurements were characterized by an increase in resistivity denoting an advancement toward disorder. The disordered Fe₃Al measurements were characterized by a decrease in resistivity denoting an advancement toward order. In the Fe₃Al ordered and disordered samples irradiated at 300⁰C, the resistivities tended to become constant as the fast neutron flux reached 19.2 x 10£đ neutrons/cmø. this indicated that the amount of disordering is in equilibrium with the amount of ordering, and that the relatively high temperature of 300⁰C is the cause for this. The other ordered and disordered Fe₃Al samples irradiated at lower temperatures did not show this effect when the fast neutron flux reached 19.2 x 10£đ neutrons/cmø. If these samples had continued to be neutron irradiated, they too, at some higher flux, would have experienced this effect of the amount of disordering approximately equaling the ordering" – Abstract, leaf ii.