Category Archives: failure

Intergranular corrosion of a martensitic stainless steel

Martensitic stainless steel (420B) microstructure show carbides precipitate at grain boundaries. Chromium, present in the matrix to guarantee corrosion resistance, is taken away to form chromium carbides. This causes a strong reduction in the corrosion resistance just near the carbides. This … Continue reading

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Cylinder block is made of one piece of spheroidal cast iron. It broke due to the impact of a failed piston rod. It is evident observing  the picture, there are no possibilities to repair the damaged cylinder block. Spheroidal cast iron can not … Continue reading

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