Localization of Plastic Deformation in Copper Canisters for Spent Nuclear Fuel
在为乏燃料铜罐塑性变形的本土化作者机构:Laboratory of Engineering MaterialsSchool of EngineeringAalto UniversityEspooFinland
出 版 物:《World Journal of Nuclear Science and Technology》 (核科学与技术国际期刊(英文))
年 卷 期:2012年第2卷第1期
页 面:16-22页
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:thank KUUMA,KYT2010,and KYT 2014 projects for funding the Swedish Nuclear Fuel and Waste Management Co.(SKB)for FSW welds,Posiva Oy for EB welds,and Kim Widell for help in tensile testing and optical strain measurement
主 题:Copper Deformation Localization Friction stir Welding Electron Beam Welding
摘 要:Localization of plastic deformation in different parts (extruded and forged base materials as well as EB and FSW welds) of the corrosion barrier copper canister for final disposal of spent nuclear fuel was studied using tensile testing, optical strain measurement, scanning electron microscopy (SEM), and electron back-scatter diffraction (EBSD). Results show that in the base materials plastic deformation occurs very uniformly. In FSW welds the deformation localizes in the weld either at the processing line or at a line of entrapped oxide particles. In EB welds the deformation localizes to the equally oriented large grains at the weld centreline or at the steep grain size gradient in the fusion line.