Effect of aging temperature on the microstructural evolution and mechanical properties of 18Ni (200) maraging steel

被引：7
作者：
Zhang, Yujian [1 ]
Li, Yanmei [1 ]
Deng, Xiangtao [1 ]
机构：
[1] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2025年 / 919卷
关键词：
Martensitic steel; Mechanical properties; Aging temperature; Reversed austenite; Strengthening mechanisms; ATOM-PROBE TOMOGRAPHY; HIGH-STRENGTH STEELS; AUSTENITE REVERSION; PHASE-TRANSFORMATION; CORROSION PROPERTIES; MARTENSITE; TOUGHNESS; BOUNDARIES; STABILITY; HARDNESS;
D O I：
10.1016/j.msea.2024.147497
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Herein, we used transmission electron microscopy (TEM), electron backscattering diffraction (EBSD), and X-ray diffractometry (XRD) to investigate the effects of different aging temperatures on reversed austenite and precipitates in 18Ni (200) maraging steel, as well as their evolving patterns of cryogenic toughness and strength. Aging at 510 degrees C was found to enhance cryogenic toughness at -196 degrees C and deliver peak strength, which is attributable to the significant aging-strengthening effect and the reversed austenite. Furthermore, this study investigated the factors that contribute to the formation and high stability of reversed austenite and quantitatively assessed the contributions of aging strengthening, dislocation strengthening, and grain-boundary strengthening to yield strength at various aging temperatures.
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页数：11
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