Behavior of cerium in boundary segregation and temper embrittlement of steels

Technical Report · Wed Jan 01 00:00:00 EST 1986

OSTI ID:6609073

Yuan, Z; Li, J; Feng, S

The co-segregation of manganese and phosphorus causes temper embrittlement. As the tempering is prolonged, the concentration of manganese in (Fe,Mn)/sub 3/C increases. It upsets the equilibrium of co-segregation and, in turn, reduces the degree of co-segregation of manganese and phosphorus, thus lessening the increase in FATT 50%. Cerium reduces the amounts of phosphorus and manganese segregated to the grain boundaries. As the grain-boundary concentration of cerium increases unceasingly, the resistance against co-segregation increases and the rate of embrittling decreases.

• Research Organization: University of Iron and Steel Technology, Beijing (China)
• OSTI ID: 6609073
• Report Number(s): PB-87-143988/XAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM ADDITIONS
METALLURGICAL EFFECTS
STEELS
EMBRITTLEMENT
GRAIN BOUNDARIES
EQUILIBRIUM
MANGANESE
PHOSPHORUS
ALLOYS
CERIUM ALLOYS
CRYSTAL STRUCTURE
ELEMENTS
IRON ALLOYS
IRON BASE ALLOYS
METALS
MICROSTRUCTURE
NONMETALS
RARE EARTH ADDITIONS
RARE EARTH ALLOYS
TRANSITION ELEMENTS
360102* - Metals & Alloys- Structure & Phase Studies
360103 - Metals & Alloys- Mechanical Properties