Acta Metallurgica Sinica (English Letters) ›› 1990, Vol. 3 ›› Issue (5): 375-378.

• Research paper • Previous Articles    

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   

  • Received:1990-10-25 Revised:1990-10-25 Online:1990-10-25 Published:2009-10-10

Abstract: 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.

Key words: 9%Ni cast steel, intergranular cracking, rare earth