Abstract
Mechanical property degradation due to an ordering phase transformation is a concern for alloys based on the Ni-Cr binary system (e.g., 690, 625), particularly in nuclear power applications, such as stream generator tubing, reactor pressure vessel and head control rod drive mechanism penetrations, where component lifetimes can exceed 40 years. In the present research, the disorder-order phase transformation has been studied in Ni-Cr model alloys with varying stoichiometry by experimental methods. In this paper, the effect of composition on ordering is characterized via X-ray diffraction.
Similar content being viewed by others
References
Marucco, A., & Nath, B. (1988). Effects of ordering on the properties of Ni-Cr alloys. Journal of materials science, 23(6), 2107–2114.
Marucco, A. (1993). Effects of composition on degree of order and ordering kinetics of Ni-Cr based superalloys. Le Journal de Physique IV, 3(CT), C7–331.
Marucco, A. (1994). Atomic ordering in the Ni-Cr-Fe system. Materials Science and Engineering: A, 189(1), 267–276.
Marucco, A. (1995). Phase transformations during long-term ageing of Ni-Fe-Cr alloys in the temperature range 450–600° C. Materials Science and Engineering: A, 194(2), 225–233.
Marucco, A. (1991). Effects of composition on the order-disorder transformation in ni-cr based alloys. Key Engineering Materials, 48, 77–90.
Young, G. A., Tucker, J. D., & Eno, D. R. (2014). The Kinetics of Long Range Ordering in Ni-Cr and Ni-Cr-Fe Alloys. 16th International Conference on Environmental Degradation of Materials in Nuclear Power Systems - Water Reactors, At Asheville, NC
Marucco, A. (1995). Atomic ordering and α′-Cr phase precipitation in long-term aged Ni3Cr and Ni2Cr alloys. Journal of materials science, 30(16), 4188–4194.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Teng, F., Tucker, J.D. Role of Stoichiometry on Ordering in Ni-Cr Alloys. MRS Online Proceedings Library 1809, 2 (2015). https://doi.org/10.1557/opl.2015.488
Published:
DOI: https://doi.org/10.1557/opl.2015.488