Dependence of ductile-to-brittle transition temperature on phosphorus grain boundary segregation for a 2.25Cr1Mo steel
- 1. Shenzhen Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Xili, Shenzhen 518055 (China)
- 2. School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081 (China)
- 3. Technology Centre, Wuhan Iron and Steel Corporation, Wuhan 430080 (China)
Description
Equilibrium grain boundary segregation of phosphorus in a 2.25Cr1Mo steel was studied by means of Auger electron spectroscopy (AES). After quenching from 980 deg. C and tempering at 650 deg. C, the steel samples were aged for different periods of time at 560, 520 and 480 deg. C, respectively, followed by AES measurements. Based on the experimental values of the equilibrium segregation levels at different temperatures along with equilibrium segregation theories, the thermodynamic parameters of segregation were evaluated. With the use of Charpy impact testing along with the AES results on phosphorus grain boundary concentration, a relationship between ductile-to-brittle transition temperature (DBTT) and phosphorus boundary concentration was established. On the basis of this relationship, predictions of the DBTT were made through predicting the grain boundary segregation of phosphorus
Availability note (English)
Available from http://dx.doi.org/10.1016/j.msea.2007.09.032Additional details
Identifiers
- DOI
- 10.1016/j.msea.2007.09.032;
- PII
- S0921-5093(07)01658-9;
Publishing Information
- Journal Title
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Journal Volume
- 486
- Journal Issue
- 1-2
- Journal Page Range
- p. 433-438
- ISSN
- 0921-5093
- CODEN
- MSAPE3
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40025598
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- AUGER ELECTRON SPECTROSCOPY; CHROMIUM ALLOYS; DUCTILE-BRITTLE TRANSITIONS; EMBRITTLEMENT; GRAIN BOUNDARIES; IMPACT TESTS; MOLYBDENUM ALLOYS; PHOSPHORUS; PRESSURE VESSELS; QUENCHING; SEGREGATION; STEELS; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; TEMPERING
- Descriptors DEC
- ALLOYS; CARBON ADDITIONS; CONTAINERS; ELECTRON SPECTROSCOPY; ELEMENTS; HEAT TREATMENTS; IRON ALLOYS; IRON BASE ALLOYS; MATERIALS TESTING; MECHANICAL TESTS; MICROSTRUCTURE; NONMETALS; SPECTROSCOPY; TEMPERATURE RANGE; TESTING; TRANSITION ELEMENT ALLOYS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.