Cluster dynamics modeling of niobium and titanium carbide precipitates inα-Fe andγ-Fe  

作　　者：Nadezda Korepanova Long Gu Mihai Dima Hushan Xu Nadezda Korepanova;顾龙;Mihai Dima;徐瑚珊(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 101408,China;Institute for Physics and Nuclear Engineering,Bucharest 077125,Romania;School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;Paul Scherrer Institute,Villigen 5232,Switzerland)

机构地区：[1]Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]School of Nuclear Science and Technology,University of Chinese Academy of Sciences,Beijing 101408,China [3]Institute for Physics and Nuclear Engineering,Bucharest 077125,Romania [4]School of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China [5]Paul Scherrer Institute,Villigen 5232,Switzerland

出　　处：《Chinese Physics B》2022年第2期509-515,共7页中国物理B（英文版）

基　　金：the CAS-TWAS President’s Fellowship Programme for this doctoral fellowship(Grant No.2016CTF004)。

摘　　要：Kinetic behaviors of niobium and titanium carbide precipitates in iron are simulated with cluster dynamics.The simulations,carried out in austenite and ferrite for niobium carbides,and in austenite for titanium carbide,are analyzed for dependences on temperature,solute concentration,and initial cluster distribution.The results are presented for different temperatures and solute concentrations,compared to experimental data available.They show little impact of initial cluster distribution beyond a certain relaxation time and that highly dilute alloys with monomers only present a significantly different behavior from denser alloys or ones with different initial cluster distributions.

关 键 词：cluster dynamics PRECIPITATES precipitation kinetics carbides 

分 类 号：TG131[一般工业技术—材料科学与工程]