摘要
利用SEM和TEM观察、分析了高碳Nb—Ti—V系堆焊层中颗粒碳化物与固溶体基体间的界面（C/S界面）结构。表明：C／S界面洁净，两相间为直接的原子结合，错配度δ=6．1％～8．3％，界面位向关系为：（002）α-Fe//（2面）（NbTiV）C；对MM200上的磨损试件观察亦表明，其C／S界面结合强度高，碳化物的脱落极少，堆焊层耐磨性超过美国的MG700。
The C/S interface(interface between particulate carbide and solid solution) was investigated in Fe based high carbon Nb-Ti-V alloyed surfacing metal by means of SEM and TEM.It was indicated that the C/S interface was clean and free from other reactants,and mismatch between the two crystals was δ=(6.18.3)%,and there existed a crystal parallel relationship on the C/S interface:(002)_(α-Fe) //((220))-_((NbTiV)C).It was also demonstrated by wear testing on the MM200 type wear machine that the two phase bound each other strongly on the C/S interface,which prevented the disbanding of carbides and provided the surfacing metal with better wear resistance than that of American MG700.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2006年第4期97-100,共4页
Transactions of The China Welding Institution
关键词
碳化物
界面
堆焊层
位向关系
carbide
interface
surfacing metal
orientation relationship
