INFLUENCE OF RARE EARTH ON INTERGRANULAR CRACKING OF 9% Ni CAST STEEL

金属学报(英文版), 1990, 3(5): 375-378.

INFLUENCE OF RARE EARTH ON INTERGRANULAR CRACKING OF 9% Ni CAST STEEL

ZHANG Wei LI Longsheng CHENG Ji Dalian University of Technology , Dalian , China Lecturer , Dept.of Materials Engineering , Dalian University of Technology , Dalian 116023 , China

Keywords： 9%Ni cast steel , null , null

The intergranular cracking of 9% Ni cast steel seems mainly to relate to the segregation of contaminates H,S and P along boundaries.An addition of rare earth may eliminate the seg- regation of these contaminates along grain boundaries and improve the binding force among boundaries,so as to reduce remarkably the intergranular cracking.

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INFLUENCE OF RARE EARTH ON INTERGRANULAR CRACKING OF 9% Ni CAST STEEL

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