Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 651, Issue -, Pages 574-582Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2015.10.077
Keywords
Mechanical characterization; Nanoindentation; Martensite; Aging; Hardening; Precipitation
Categories
Funding
- DOE-NEET program [DE-NE0000536]
- Chinese Government Graduate Student Overseas Study Program
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High temperature mechanical measurements were conducted to study the effect of the dynamic precipitation process of PH 13-8 Mo maraging steel. Yield stress, ultimate tensile strength, total elongation, hardness, strain rate sensitivity and activation volume were evaluated as a function of the temperature. The dynamic changes in the mechanical properties at different temperatures were evaluated and a balance between precipitation hardening and annealed softening is discussed. A comparison between hardness and yield stress and ultimate tensile strength over a temperature range from 300 to 600 degrees C is made. The behavior of the strain rate sensitivity was correlated with the intermetallic precipitates formed during the experiments. (C) 2015 Elsevier B.V. All rights reserved.
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