Electrical Resistivity Study of the Phase Separation in Fe-Cr Alloys at 773 K

被引：0
作者：
Nikolaev, A. L. [1 ]
机构：
[1] Russian Acad Sci, Mikheev Inst Met Phys, Ural Branch, Ekaterinburg 620108, Russia
来源：
PHYSICS OF METALS AND METALLOGRAPHY | 2024年 / 125卷 / SUPPL1期
关键词：
electrical resistivity; iron-chromium alloys; aging at 773 K; phase separation; nuclei formation; spinodal decomposition; IRON-CHROMIUM ALLOYS; ALPHA;
D O I：
10.1134/S0031918X24601823
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The electrical resistivity (ER) method was applied to study decomposition of a solid solution in four Fe-Cr alloys Cr9, Cr11, Cr16, and Cr22 during aging at 773 K. Additionally, the similar ER data obtained on decomposition of Cr27 at 773 K and available elsewhere were taken into consideration. The obtained results divided the alloys into 3 groups: (1) Cr9; (2) Cr11 and Cr16; and (3) Cr22 and Cr27. The ER of Cr9 remained unchanged. Within the second or third group, the characteristic features of ER variations are the same, but change significantly with the transition from one group to another. The change is associated with a change in the mechanism of decomposition from that with the formation of nuclei to spinodal one. Estimate of the boundary concentration between concentration regions of these two mechanisms at 773 K is made.
引用
收藏
页码：S72 / S82
页数：11
相关论文
共 28 条
  • [1] Wallenius J., Olsson P., Lagerstedt C., Sandberg N., Chakarova R., Pontikis V., Modeling of chromium precipitation in Fe–Cr alloys, Phys. Rev. B, 69, (2004)
  • [2] Olsson P., Wallenius J., Domain C., Nordlund K., Malerba L., Two-band modeling of α-prime phase formation in Fe–Cr, Phys. Rev. B, 72, (2005)
  • [3] Olsson P., Abrikosov I.A., Wallenius J., Electronic origin of the anomalous stability of Fe-rich bcc Fe–Cr alloys, Phys. Rev. B, 73, (2006)
  • [4] Bonny G., Terentyev D., Malerba L., On the α‒α′ miscibility gap of Fe–Cr alloys, Scr. Mater, 59, pp. 1193-1196, (2008)
  • [5] Malerba L., Caro A., Wallenius J., Multiscale modelling of radiation damage and phase transformations: The challenge of FeCr alloys, J. Nucl. Mater, 382, pp. 112-125, (2008)
  • [6] Bonny G., Terentyev D., Malerba L., Van Neck D., Early stages of α–α′ phase separation in Fe–Cr alloys: An atomistic study, Phys. Rev. B, 79, (2009)
  • [7] Bonny G., Pasianot R.C., Malerba L., Caro A., Olsson P., Lavrentiev M.Y., Numerical prediction of thermodynamic properties of iron–chromium alloys using semi-empirical cohesive models: The state of the art, J. Nucl. Mater, 385, pp. 268-277, (2009)
  • [8] Bonny G., Terentyev D., Malerba L., New contribution to the thermodynamics of Fe–Cr alloys as base for ferritic steels, J. Phase Equilib. Diffus, 31, pp. 439-444, (2010)
  • [9] Xiong W., Hedstrom P., Selleby M., Odqvist J., Thuvander M., Chen Q., An improved thermodynamic modeling of the Fe–Cr system down to zero kelvin coupled with key experiments, Calphad, 35, pp. 355-366, (2011)
  • [10] Martinez E., Senninger O., Fu C.-C., Soisson F., Decomposition kinetics of Fe–Cr solid solutions during thermal aging, Phys. Rev. B, 86, (2012)
123