Institute of Metals Division - The Hardening Mechanism in Nitralloy-N Steel (TN)
- Organization:
- The American Institute of Mining, Metallurgical, and Petroleum Engineers
- Pages:
- 3
- File Size:
- 759 KB
- Publication Date:
- Jan 1, 1962
Abstract
J. B. Seabrook' recently published properties of a low-alloy Ni-A1 age-hardening steel known commercially as "Nitralloy-N". He mentioned three possible mechanisms of age hardening, viz. order-disorder in the matrix, order -disorder in a precipitate, and a precipitate that goes in and out of solution reversibly without losing coherency. The following results indicate that the last - mentioned of these mechanisms is the cause of age hardening in Nitralloy-N. The reversibility of the age hardening with a sub-critical solution temperature was demonstrated strikingly by Seabrook, whose results are reproduced in Fig. 1. Aging for 22 hr at 975°F (525°C) can reharden the fully-tempered martensite to its original as-quenched hardness of R, 45. A Nitralloy steel was obtained from Seabrook' with the following analysis:
Citation
APA: (1962) Institute of Metals Division - The Hardening Mechanism in Nitralloy-N Steel (TN)
MLA: Institute of Metals Division - The Hardening Mechanism in Nitralloy-N Steel (TN). The American Institute of Mining, Metallurgical, and Petroleum Engineers, 1962.