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Autor:
Nayak, Sanjay, Shanmugham, Sathish Kumar, Petrov, Ivan, Rosen, Johanna, Eklund, Per, Birch, Jens, le Febvrier, Arnaud
Publikováno v:
Journal of Applied Physics; 10/7/2023, Vol. 134 Issue 13, p1-9, 9p
Autor:
D. L. Jassby, H. H. Towner, H. Jochem Rütten, Eberhard Teuchert, J. M. Mintz, T. S. Elleman, K. Verghese, Helfrid W. H. Lahr, W. J. Lackey, D. P. Stinton, L. E. Davis, R. L. Beatty, H. C. Burkholder, M. O. Cloninger, D. A. Baker, G. Jansen, Hiroji Katsuta, Kazuo Furukawa, E. E. Bloom, J. M. Leitnaker, J. O. Stiegler, E. E. T. C. Gillet, R. S. Denning, J. L. Ridihalgh, G. S. Okawara, A. A Harms, John W. McKlveen, Michael Schwenk, T. Roger Billeter, L. D. Blackburn, R. N. Davie, J. F. Davis, R. T. Schneider, R. K. Collier, C. E. Backus
Publikováno v:
Nuclear Technology. 31:153-157
Autor:
J. M. Leitnaker, Ronald L. Klueh
Publikováno v:
Metallurgical Transactions A. 6:2089-2093
Specimens of 2 1/4 Cr−1 Mo steel that had been decarburized in sodium or aged in an inert atmosphere for 26,500 h at 839 K were metallurgically examined with optical and transmission electron microscopy. The carbide particle density of the decarbur
Publikováno v:
Metallurgical Transactions A. 9:397-400
The composition of the eta carbide in Hastelloy N containing 0.7 wt pct silicon in the alloy, approaches Mi2C, rather than M6C as indicated in the alloy literature. The silicon content of the eta phase in this case was ~25 at. pct, much higher than h
Autor:
James Bentley, J. M. Leitnaker
Publikováno v:
Metallurgical Transactions A. 8:1605-1613
Long term aging of type 321 stainless steel indicates TiC, not M23C6, is the thermodynamically stable carbide phase. A theory is developed to explain appearance of M23C6 at intermediate times. The theory also indicates a means for preventing M23C6 fo
Autor:
D. N. Braski, J. M. Leitnaker
Publikováno v:
Metallurgical Transactions A. 10:427-432
To homogenize Ti-Hastelloy-N, the segregated MC-type carbide stringers must be dissolved during solution annealing and enough time allowed for the carbide forming elements to diffuse uniformly throughout the matrix. A solubility product-l/Τplot and
Autor:
J. M. Leitnaker, Karl E. Spear
Publikováno v:
Journal of the American Ceramic Society. 51:706-709
Values given in the literature for the heat of formation of plutonium mononitride range from — 70 to — 76 kcal/mole. This paper shows that if estimated entropy and high-temperature heat capacity data are used to derive a reasonable set of high-te
Autor:
J. M. Leitnaker, H. Inouye
Publikováno v:
Journal of the American Ceramic Society. 51:6-9
Pressures of nitrogen over UN(s) + U(1) were measured between 1300′ and 1500°C. These data, coupled with literature data, extend the measured range of pressures to nearly 11 orders of magnitude and 1550 centigrade degrees. The best value of AH°29
Autor:
J. P. Luca, J. M. Leitnaker
Publikováno v:
Journal of the American Ceramic Society. 56:126-129
Existing thermodynamic data for the Cr-N system were analyzed. High-temperature heat contents measured by Sato were reevaluated, and the heat capacity of Cr2N was determined to be 15.05+6.58×10−3T (°K) and that of CrN 11.10+ 1.58×103T. Using the