Coarsening behaviour of M23C6 carbides in creep-resistant steel exposed to high temperatures

被引：69
作者：
Godec, M. [1 ]
Balantic, D. A. Skobir [1 ]
机构：
[1] Inst Met & Technol, Lepi Pot 11, Ljubljana 1000, Slovenia
来源：
SCIENTIFIC REPORTS | 2016年 / 6卷
关键词：
MARTENSITE FERRITIC STEEL; MECHANICAL-PROPERTIES; CR; NUCLEATION; BOUNDARIES; GROWTH;
D O I：
10.1038/srep29734
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
High operating temperatures can have very deleterious effects on the long-term performance of high-Cr, creep-resistant steels used, for example, in the structural components of power plants. For the popular creep-resistant steel X20CrMoV12.1 we analysed the processes of carbide growth using a variety of analytical techniques: transmission electron microscopy (TEM) and diffraction (TED), scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD). The evolution of the microstructure after different aging times was the basis for a much better understanding of the boundary-migration processes and the growth of the carbides. We present an explanation as to why some locations are preferential for this growth, and using EBSD we were able to define the proper orientational relationship between the carbides and the matrix.
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页数：7
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