Coarsening behavior of（Ni,Co）2Si particles in Cu-Ni-Co-Si alloy during aging treatment

作     者：Xiang-Peng Xiao Hai Xu Jin-Shui Chen Jun-Feng Wang Jiao Lu Jiao-Bo Zhang Li-Jun Peng 

作者机构：Institute of Engineering ResearchJiangxi University of Science and TechnologyGanzhou 341000China School of Materials Science and EngineeringJiangxi University of Science and TechnologyGanzhou 341000China State Key Laboratory for Fabrication and Processing of Nonferrous MetalsGeneral Research Institute for Nonferrous MetalsBeijing 100088China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2019年第38卷第11期

页      面：1062-1069页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51561008 and 51461017) Jiangxi Yorth Major Natural Science Foundation(Nos.20171ACB21044 and 20161BBE50030) 

主　　题：Coarsening behavior (Ni,Co)2Si particles Coherence mismatch LSW theory Particle size distributions 

摘      要：The coarsening behavior of(Ni,Co)2Si particles in Cu-Ni-Co-Si alloy was investigated by experimental observations and coarsening kinetics calculations when aged at 450,500,550 and 600℃ for different *** results show that the critical particle radius for coherence mismatch is found to be 10.3 nm,and particles larger than 25 nm are generally *** relationship of(Ni,Co)2Si particles size and aging time follows Lifshitz,Slyosov and Wagner(LSW) *** particle size distributions fit well to the LSW theoretical *** activation energy for(Ni,Co)2Si coarsening is accurately determined to be(216.21 ± 5.18)kJ mol-1 when considering the effect of temperature on the solution concentrations in *** coarsening of(Ni,Co)2Si particles in Cu-Ni-Co-Si alloy is controlled by diffusion of Ni,Co and Si in Cu *** growth of particles for long durations suggests that vacancies can be trapped within the structure for long time despite their mobility.