Study on Interface Between Fe3Al Intermetallics Welded by Shielded Metal Arc Welding
The semi-ceramics Fe3Al intermetallics was welded by shielded metal arc welding with stainless steel using stainless steel welding rod.The microstructure,chemical composition and phase structure of welding interface were studied by optical microscopy,SEM,ESA and XRD.The results show that welding seam joint well with base material.The concentration of alloy elements of interface and both side of interface change by grads,especially,aluminum obviously change by grads on welding seam.Elements diffusion found but no new phase formed on the interface.