摘要
The equation of the effect of gram boundary segregation on mtergranular fracture energy is derived with quasichemical method,and the mtergranular fracture parameter P is defined.When P>0 or P<0,the segregated species are embrittling or toughening.The bigger the |P|,the stronger the tendency of embrittling or toughening.Four items of modification on Seah' s theory are presented and mis-classification solved.
The equation of the effect of gram boundary segregation on mtergranular fracture energy is derived with quasichemical method,and the mtergranular fracture parameter P is defined.When P>0 or P<0,the segregated species are embrittling or toughening.The bigger the |P|,the stronger the tendency of embrittling or toughening.Four items of modification on Seah’ s theory are presented and mis-classification solved.
基金
Project supported by the National Science
Technology Commission of China Under 863 Program
