Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 589, Issue -, Pages 34-40Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2013.09.058
Keywords
LCF; DSA; High temperature; C-Mn steel
Categories
Funding
- National Natural Science Research Foundation of China [51101107, 11372201]
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Carbon-manganese steel A48 (French standard) is used in steam generator pipes of nuclear reactor pressure vessels at high temperatures (about 200 degrees C). The steel is sensitive to dynamic strain aging in monotonic tensile test and low cycle fatigue test at certain temperature range and strain rate. Its isotropic hardening behavior observed from experiments has a hardening, softening and hardening evolution with the effect of dynamic strain aging. The isotropic hardening model is improved by coupling the dislocation and dynamic strain aging theory to describe the behavior of A48 at 200 degrees C. (C) 2013 Elsevier B.V. All rights reserved.
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