New type of M/sub 23/C/sub 6/ carbide precipitation in an austenitic stainless steel containing niobium
(1981) Japan Institute of Metals. Transactions — Vol. 22, n° 6, p. 379-384 (1981)
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- Abstract
- An electron microscopic study has been made of precipitation of an austenitic stainless steel, 16Cr-16Ni-0.8Nb-1.8Mo-0.06C. Attention has been focused on structural changes which take place during ageing treatments, extended up to 14.4 Ms (4000 h). In addition to the well-known chromium rich M/sub 23/C/sub 6/ carbides, which appear, together with NbC, from the beginning of the precipitation treatment of 1073K, a new plate-like morphology of M/sub 23/C/sub 6 / carbide precipitation was observed after long ageing treatments. The M/sub 23/C/sub 6/ carbide precipitation was observed after long ageing treatments. These M/sub 23/C/sub 6/ carbide plates were formed on {110} planes in regions near pre-existing undissolved NbC particles and their edges were bounded by {111} planes of the FCC alloy matrix. It is suggested that this unexpected process might be favoured by the stresses produced around the undissolved NbC particles.
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Terao, N., & Sasmal, B. (1981). New type of M/sub 23/C/sub 6/ carbide precipitation in an austenitic stainless steel containing niobium. Japan Institute of Metals. Transactions, 22(6), 379-384. https://hdl.handle.net/2078.5/49704 (Original work published 1981)