Annealing effects on microstructure and coercive field of ferritic-martensitic ODS Eurofer steel

作者：Renzetti R A; Sandim H R Z^*; Sandim M J R; Santos A D; Moeslang A; Raabe D

来源：Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 2011, 528(3): 1442-1447.

DOI：10.1016/j.msea.2010.10.051

• Steel
• Magnetic measurements
• Coercive field
• Recrystallization
• EBSD
• ODS

Oxide dispersion strengthened reduced-activation ferritic-martensitic steels are promising candidates for applications in future fusion power plants. Samples of a reduced activation ferritic-martensitic 9 wt.%Cr-oxide dispersion strengthened Eurofer steel were cold rolled to 80% reduction in thickness and annealed in vacuum for 1 h from 200 to 1350 degrees C to evaluate its thermal stability. Vickers microhardness testing and electron backscatter diffraction (EBSD) were used to characterize the microstructure. The microstructural changes were also followed by magnetic measurements, in particular the corresponding variation of the coercive field (H(c)), as a function of the annealing treatment. Results show that magnetic measurements were sensitive to detect the changes, in particular the martensitic transformation, in samples annealed above 850 degrees C (austenitic regime).

• 出版日期2011-1-25