In-situ observations of a hierarchical twinning–detwinning process in stress-induced α″-martensite of Ti-12Mo alloy

Autor:	Bingnan Qian, Min Yang, Lola Lilensten, Philippe Vermaut, Fan Sun, Frédéric Prima
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	metastable titanium alloys orthorhombic martensite-α″ martensitic mechanical twinning Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 10, Iss 2, Pp 45-51 (2022)
Druh dokumentu:	article
ISSN:	2166-3831 21663831 95512047
DOI:	10.1080/21663831.2021.2013967
Popis:	Beyond classic martensitic transformation-induced plasticity (TRIP), consecutive hierarchical twinning in the primary martensite is observed providing additional tensile strain about two-to-three times higher than the original transformation strain. The hierarchical twinning, operating in two different modes, contributes to at least one quarter of the plasticity in TRIP/TWIP Ti-12Mo alloy at early deformation stage. During tensile unloading, a peculiar multi-step detwinning process reverses the mechanically twinned martensite to its original orientation, resulting in rubber-like behavior. The complex reversible twinning process is investigated by combining in-situ EBSD/TEM experiments and theoretical rationalization with respect to Schmid factors and twin variant selection.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/db1d3f955120478eb8148688c054e958 Zobrazit plný text záznamu View record in DOAJ