鉄基二元合金のデンドライト・アーム・スペーシング

概要

論文の詳細を見る
Few systematic studies were made to show the effects of solidification variables and alloying elements on the primary and secondary dendrite-arm spacing in ferrous alloys. This study is aimed to make clear the effects mentioned above in Fe-Ni, Fe-Si and Fe-P binary alloys. The results obtained are summarized as follows : 1) The primary arm spacing, d_1 is given by the following equation, d_1=a_1[mC(k-1)]^<1/6>/V^<1/2> where, m is the liquidus slope, C the content of alloying element, k the distribution coefficient, V the cooling rate and a_1 a constant. 2) The secondary arm spacing d_2 is given by the following equation after the coarsening theory proposed by Kattamis and Flemings, d_2=d_<2-0>[θ/mC(k-1)]^<1/3> where, θ is the local solidification time and d_<2-0> is a constant which depends on the diffusion coefficient of the alloying element in both liquid and solid and the solidification temperature.
社団法人日本鉄鋼協会の論文
1977-03-01