Effects of grain boundary carbides on the mechanical properties of Inconel 600

The effects of grain boundary carbides on the tensile and impact properties of Inconel 600 at 25 and −196°C were studied. Unlike the type 316 stainless steel which can be severely embrittled, grain boundary carbides cause only a significant loss in the reduction of area, but, otherwise, little effect on other tensile properties. Deep grain boundary cracks are observed on the fracture surfaces. Charpy V-notch impact specimens are not completely fractured, even at −196°C in samples with grain boundary carbides.