Solubility of Metals in Substoichiometric TiC1‐x
- 1 January 1984
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 67 (1) , 34-38
- https://doi.org/10.1111/j.1151-2916.1984.tb19143.x
Abstract
Twenty‐one elements were screened for solubility in selected titanium‐carbide compositions at 1600°C. Tin, lead, and aluminum were found to dissolve to an appreciable extent only in carbide compositions very near the titanium‐titanium carbide phase boundary. Small additions of Sn caused a substantial shift in this boundary in the direction of reduced carbon content, accompanied by reduced microhardness, indicating reduced flow stress. The degree of solubility of the alloying additions and/or excess Ti in the carbide is lower at T<1400°C, as evidenced by the appearance of fine metallic precipitates on aging or slow cooling. However, a single‐phase alloyed carbide can be retained by quenching. In contrast, the solubility of Cr in TiC was found to decrease with decreasing carbon content, and the flow stress, as indicated by microhardness, to increase with increasing Cr content.Keywords
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