کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1564993 | 1514190 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synchrotron study on load partitioning between ferrite/martensite and nanoparticles of a 9Cr ODS steel
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی هسته ای و مهندسی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synchrotron study on load partitioning between ferrite/martensite and nanoparticles of a 9Cr ODS steel Synchrotron study on load partitioning between ferrite/martensite and nanoparticles of a 9Cr ODS steel](/preview/png/1564993.png)
چکیده انگلیسی
Oxide dispersion strengthened (ODS) steels exhibit exceptional radiation resistance and high-temperature creep strength when compared to traditional ferritic and ferritic/martensitic (F/M) steels. Their excellent mechanical properties result from very fine nanoparticles dispersed within the matrix. In this work, we applied a high-energy synchrotron radiation X-ray to study the deformation process of a 9Cr ODS steel. The load partitioning between the ferrite/martensite and the nanoparticles was observed during sample yielding. During plastic deformation, the nanoparticles experienced a dramatic loading process, and the internal stress on the nanoparticles increased to a maximum value of 3.7Â GPa, which was much higher than the maximum applied stress (â¼986Â MPa). After necking, the loading capacity of the nanoparticles was significantly decreased due to a debonding of the particles from the matrix, as indicated by a decline in lattice strain/internal stress. Due to the load partitioning, the ferrite/martensite slightly relaxed during early yielding, and slowly strained until failure. This study develops a better understanding of loading behavior for various phases in the ODS F/M steel.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Nuclear Materials - Volume 455, Issues 1â3, December 2014, Pages 376-381
Journal: Journal of Nuclear Materials - Volume 455, Issues 1â3, December 2014, Pages 376-381
نویسندگان
Kun Mo, Zhangjian Zhou, Yinbin Miao, Di Yun, Hsiao-Ming Tung, Guangming Zhang, Weiying Chen, Jonathan Almer, James F. Stubbins,