A high temperature mechanical study on PH 13-8 Mo maraging steel

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:651

Article

Huang, Z.^1,2,3  Abad, M. D.³  Ramsey, J. K.⁴  de Figueiredo, M. Rebelo³  Kaoumi, D.⁴  Li, N.^1,2  Asta, M.⁵  Gronbech-Jensen, N.⁶  Hosernann, P.^1,2 

[1] Xiamen Univ, Coll Energy, Xiamen, Fujian, Peoples R China

[2] Sch Energy Res, Xiamen, Fujian, Peoples R China

[3] Univ Calif Berkeley, Nucl Engn, Berkeley, CA 94720 USA

[4] Univ S Carolina, Nucl Engn, Columbia, SC 29208 USA

[5] Univ Calif Berkeley, Mat Sci & Engn, Berkeley, CA 94720 USA

[6] Univ Calif Davis, Dept Mech & Aeronaut Engn, Davis, CA 95616 USA

关键词: Mechanical characterization;    Nanoindentation;    Martensite;    Aging;    Hardening;    Precipitation;   

DOI  :  10.1016/j.msea.2015.10.077

来源: Elsevier

【 摘 要 】

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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