摘要
选用不同成分Co-Fe-C合金作为填充材料,对YG30硬质合金与45钢进行了TIG焊试验。通过扫描电镜、X射线衍射、显微硬度分析了YG30/焊缝界面区的相组成、组织和硬度分布。结果表明,填充材料在Fe-C合金的基础上,适当增加Co含量可以减少或抑制η相形成。当填充材料中Co含量为73%(质量分数)时,YG30/焊缝界面区没有η相形成。随着填充材料中Co含量的增加,YG30/焊缝界面区硬度过渡平缓。
The tungsten-inert-gas （TIG） welding test on YG30 cemented carbide and the 45 # steel was done with Co-Fe-C alloys in different composition as filling materials. The phase constituents,microstructure and hardness distribution near YG30/weld interface was analyzed by means of scanning electronic microscopy （SEM）, X-rays analyzer and microhardness tester. The results showed that the detrimental multicarbides（called as （phases, hereafter） were decreased or inhibited by properly increasing Co content in FeC alloys. When the Co content was 73%wt, no η phases were formed near the YG30/weld interface. The hardness distribution near the YG30/weld interface were smoothly transited with the increase of Co content in the filling materials.
出处
《稀有金属与硬质合金》
CAS
CSCD
2007年第1期18-21,共4页
Rare Metals and Cemented Carbides
基金
大连市计划项目资助(2001145)
