Structures of M2C carbides and its influence on strengthening in AerMet100 steel at the typical tempering temperature 482 °C

被引：10
|
作者：
Wang, Hongli [1 ,2 ,3 ]
Zhang, Jian [1 ,2 ]
Zhu, Jingchuan [3 ]
Zhou, Fei [3 ]
Zhang, Xianguang [4 ]
Jiang, Qi [1 ,2 ]
机构：
[1] Chengdu Adv Met Mat Ind Technol Inst Co Ltd, Chengdu 610300, Peoples R China
[2] State Key Lab Met Mat Marine Equipment & Applicat, Anshan 114009, Peoples R China
[3] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150006, Peoples R China
[4] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China
来源：
VACUUM | 2023年 / 214卷
关键词：
M2C carbide; Orthorhombic; Strengthening; HighCo-Ni secondary Hardening steel; MECHANICAL-PROPERTIES; MICROSTRUCTURE; PRECIPITATION; DIFFRACTION; TOUGHNESS; ALLOYS;
D O I：
10.1016/j.vacuum.2023.112209
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structures of M2C carbides in AerMet100 after tempered at 482 & DEG;C were finely characterized by highresolution transmission electron microscopy and its influences on the mechanical properties were studied. The needle-shaped carbides with hexagonal structure are the dominant precipitates, however, the atomic-scale lamellar shaped carbides with orthorhombic structure are newly observed during the tempering process. The orthorhombic carbides are easy to be coarsened against the tempering time. The influence of M2C with different structures on strengthening were evaluated and the results indicated that the orthorhombic-type nano-particles have a lower strengthening efficiency than the hexagonal ones, due to its smaller aspect ratio, and the easy coarsening tendency.
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页数：6
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