Accelerated grain boundary migration in nanolaminated interstitial-free steel during chromizing

Autor:	S. L. Xie, S. V. Divinski, Y. B. Lei, Z. B. Wang
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	nanolaminated structure diffusion grain boundary migration thermal stability surface mechanical rolling treatment Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 9, Iss 2, Pp 84-90 (2021)
Druh dokumentu:	article
ISSN:	2166-3831 21663831
DOI:	10.1080/21663831.2020.1827072
Popis:	A nanolaminated surface layer was produced on interstitial-free steel by surface mechanical rolling treatment. While the microstructure showed relatively high thermal stability during annealing at 500°C, significant grain boundary (GB) migration occurred in the nanolaminated surface layer during chromizing at the same temperature. GB diffusion of Cr was observed under the Harrison B-type regime in the chromized surface layer. The accelerated GB migration was discussed to be influenced by enhanced GB energy and mobility due to the GB diffusion and enrichment of Cr in nanolaminated structures. Meanwhile, the high stresses introduced during sample preparations also enhance the coarsening kinetics.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/7ac966de7ac143fbb161635ba0614b5a Zobrazit plný text záznamu View record in DOAJ