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Origin of intergranular fracture in martensitic 8Mn steel at cryogenic temperatures SCIE SCOPUS
- Title
- Origin of intergranular fracture in martensitic 8Mn steel at cryogenic temperatures
- Date Issued
- 2013-09
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- The fracture behavior of 8Mn steel at -196 degrees C has been investigated by a comparison with that of 9Ni steel. 8Mn steel fails by a mixture of cleavage and intergranular fracture, in contrast to 9Ni steel, which shows cleavage fracture when impact tested at -196 degrees C. This shows that intergranular fracture in 8Mn steel is not due to the segregation of solutes, including Mn, reducing the grain boundary strength, but to the higher strength of the matrix compared to that of the grain boundary. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
- Keywords
- Mn steel; Intergranular fracture; Grain boundary segregation; Three-dimensional atom probe; GRAIN-BOUNDARY EMBRITTLEMENT; TOUGHNESS; MN; IMPROVEMENT; ALLOYS; CARBON; IRON
- ISSN
- 1359-6462
- Article Type
- Article
- Citation
- SCRIPTA MATERIALIA, vol. 69, no. 5, page. 420 - 423, 2013-09
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- 김낙준KIM, NACK JOON
- Ferrous & Energy Materials Technology