典型文献
Brittleness and fracture mechanism of sintered Dy-doped NdFeB magnets
文献摘要：
The brittleness and fracture behaviors of the sintered and the two-stage aged Dy-doped NdFeB magnets were studied by a unique method of acoustic emission testing and Vickers hardness indentation method in this paper.A detailed analysis on the crack propagation mechanism along the grain boundary of the main grain phase(Nd,Dy)2Fe14B was done.By comparing the acoustic emission energy count value(En)with the Vickers hardness indentation load(P),it is shown that there is a linear relationship between En and P for both the sintered and the two-stage aged Dy-doped NdFeB magnets.According to the slope of En versus P linear lines,it can be found that the two-stage aged Dy-doped NdFeB magnet is more brittle than the sintered one.It is due to that the Nd-rich grain boundary phase of the two-stage aged Dy-doped NdFeB magnet is formed as thin film and uniformly dis-tributes around the main grain phase,which plays a sig-nificant role in increasing the intrinsic coercive force of the magnet,but decreasing its interface binding strength.Therefore,the resistance of crack propagation along the grain boundary decreases and the brittleness increases.
文献关键词：
中图分类号：
作者姓名：
Li-Na Zhao;Xiao-Li Wang;Kai-Hong Ding;Sheng-Li Cui;Yong-Cong Sun;Mu-Sen Li
作者机构：
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,Ministry of Education,Jinan University,Jinan 250061,China;Institute of Materials,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Yantai Shougang Magnetic Materials Inc,Yantai 265500,China
文献出处：
引用格式：
[1]Li-Na Zhao;Xiao-Li Wang;Kai-Hong Ding;Sheng-Li Cui;Yong-Cong Sun;Mu-Sen Li-.Brittleness and fracture mechanism of sintered Dy-doped NdFeB magnets)[J].稀有金属（英文版）,2022(08):2688-2692
A类：
Brittleness
B类：
fracture,mechanism,sintered,Dy,doped,NdFeB,magnets,brittleness,behaviors,two,stage,aged,were,studied,by,unique,method,acoustic,emission,testing,Vickers,hardness,indentation,this,paper,detailed,analysis,crack,propagation,along,grain,boundary,main,phase,2Fe14B,was,done,By,comparing,energy,count,value,En,load,shown,that,there,linear,relationship,between,both,According,slope,versus,lines,found,more,than,It,due,rich,formed,thin,film,uniformly,dis,tributes,around,which,plays,sig,nificant,role,increasing,intrinsic,coercive,force,decreasing,its,interface,binding,strength,Therefore,resistance,decreases,increases
AB值：
0.469656
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
