Combined equilibrium and non-equilibrium segregation treatment of temper embrittlement in low alloy steels
Source: Materials Science and Technology, Volume 17, Number 5, May 2001 , pp. 523-528(6)
Publisher: Maney Publishing
Abstract:Embrittlement is an important factor for low alloy ferritic steels used for components and structures in the power and petrochemical industries when exposed to a higher temperature. The embrittlement may be classified into non-hardening embrittlement and hardening embrittlement. The non-hardening embrittlement, for example temper embrittlement, originates from grain boundary segregation of impurity elements such as phosphorus. To predict this segregation behaviour, a model is established by simplifying a low alloy steel as a dilute Fe–C–Mo–P quaternary alloy and modifying previous models. This model is applied to segregation predictions in a 2.25Cr–1Mo steel subjected to a complex heat treatment cycle.
Document Type: Regular Paper
Affiliations: 1: The Department of Materials Engineering, Brunel University, Uxbridge, Middx UB8 3PH, UK 2: The Institute of Polymer Technology and Materials Engineering, Loughborough University, Loughborough, Leics. LE11 3TU, UK 3: The Berkeley Centre, BNFL Magnox Generation, Berkeley, Glos. GL13 9PB, UK
Publication date: 2001-05-01
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