摘要
利用电子探针(EPMA)、能谱分析(EDS)对高碳多元合金焊缝和急冷熔滴中的碳化物及合金元素分布进行了研究,探讨了Ti、Nb、V及Cr共存时碳化物的形成规律及机理。结果表明,Ti、Nb强烈与C结合形成碳化物,并能由液相中析出;同时,Ti、Nb的存在对V和Cr的碳化物倾向有抑制作用,使V和Cr固溶于基体中,避免了网状碳化物。
The distribution of Nb, Ti, V and Cr inhigh carbon weld metals and quenched welding globulewere investigated by means of Electron Probe Microanal-ysis (EPMA) and Energy Dispersive Spectrometry(EDS), then the forming mechanism of carbides in weldsalloyed with Nb, Ti, V and Cr was discussed. It is re-vealed that Ti and Nb preferred to form carbides ratherthan dissolved in matrix and their carbides could precipi-tate from liquid melt. Carbide forming tendency of V andCr was restrained due to the existing of Ti and Nb, thenV and Cr dissolved in the matrix mostly and net carbidesalong grain boundary could be avoided.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2003年第18期1614-1616,共3页
China Mechanical Engineering
基金
山东省自然科学基金资助项目(Y99F01)
关键词
高碳焊缝
碳化物
钛
铌
钒
铬
high carbon weld
carbide
(titanium, nio bium, vanadium, chromium) distribution
