Overcoming plasticity reduction in a severely deformed nano-grained metastable alloy

Autor:	Yemao Lu, Gaoming Zhu, Horst Hahn, Yulia Ivanisenko
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	Metastable alloys transformation-induced plasticity nano grains mechanical properties Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 12, Iss 7, Pp 525-534 (2024)
Druh dokumentu:	article
ISSN:	21663831 2166-3831
DOI:	10.1080/21663831.2024.2356761
Popis:	Most bulk metallic materials reveal an increased strength but a loss of ductility after cold deformation, a phenomenon known as the strength–ductility trade-off. In this study, we propose a strategy to overcome this problem by introducing a high density of crystalline defects into a Fe-based metastable alloy by refining grains to a nanometer scale. This procedure effectively enhances the kinetics and reduces the driving force for transformation-induced plasticity (TRIP). Consequently, the TRIP effect originally occurring at cryogenic temperature in the studied alloy becomes active at ambient conditions, contributing to a strength–ductility synergy and overcoming cold working induced sacrifice of ductility.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/996cca34227540f39209a6769c982b20 Zobrazit plný text záznamu View record in DOAJ