重型机械Issue(2)：7-11,5.
稀土 Ce 对纯镍组织和断口的影响
The influence of rare earth Ce on the microstructure and fracture of pure nickel
摘要
Abstract
In this paper,rare earth element Ce is added in the pure nickel N6 under the vacuum smelting. Using OM,SEMand TEMstudied the rare earth Ce influence on inclusions,organization and the fracture of the pure nickel N6.The results showed that adding rare earth Ce can effectively purify the pure nickel N6 melt, significant reduction in the number of inclusions in the melt,change the shape of inclusions,decrease the size of inclusions,but the yield is only 21%;A small amount of Ce oxide inclusions in diamond and residue in nickel substrate,the distribution in grain boundary;Nest N6 plate tensile fracture toughness of adding rare earth Ce evenly,and there are few holes;Part of intermetallic compounds,rare earth Ce and Ni in the process of plastic deformation are prone to breakage and form crack source,have serious impact on the mechanical property of N6 plate.关键词
纯镍/稀土Ce/夹杂物/组织/断口Key words
pure nickel/rare earth Ce/inclusion/microstructure/fracture分类
矿业与冶金引用本文复制引用
林兆霞,朱乐乐,樊君,王乐,张兵..稀土 Ce 对纯镍组织和断口的影响[J].重型机械,2015,(2):7-11,5.基金项目
国家自然科学基金资助（项目号51404180），陕西省科技统筹项目（2014KTCQ01－35），西北工业大学凝固技术国家重点实验室项目基金资助 （）
