A study of grain boundary segregants in thermally embrittled maraging steel
Document Type
Article
Publication Date
3-1974
Department
Department of Materials Science and Engineering
Abstract
Auger electron spectroscopy was employed to directly determine the cause of thermal embrittlement of 250 series maraging steel. A drop in CVN energy with introduction of an embrittling intermediate anneal was directly correlated with a build-up of both Ti and C on the prior austenite grain boundaries. By following grain boundary concentration of Ti as a function of time at a given temperature, the diffusion coefficient for Ti in the maraging steel at 1600°F was determined. Finally, the further drastic drop in CVN energy on aging an embrittled specimen was shown to be due to a segregation of B to the already embrittled prior austenite grain boundaries, causing a further loss of cohesion.
Publication Title
Metallurgical Transactions
Recommended Citation
Johnson, W.,
&
Stein, D.
(1974).
A study of grain boundary segregants in thermally embrittled maraging steel.
Metallurgical Transactions,
5(3), 549-554.
http://doi.org/10.1007/BF02644648
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4396
Publisher's Statement
© 1974 American Society for Metals, The Melallurgical Society of AIME. Publisher’s version of record: https://doi.org/10.1007/BF02644648