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Medientyp:
E-Artikel
Titel:
Effect of strain rate on α-lath thickness of TC17 alloy after deformation and subsequent heat treatment
Beteiligte:
Lu, Zimin;
Luo, Jiao;
Li, Miaoquan
Erschienen:
EDP Sciences, 2020
Erschienen in:
MATEC Web of Conferences, 321 (2020), Seite 13003
Sprache:
Nicht zu entscheiden
DOI:
10.1051/matecconf/202032113003
ISSN:
2261-236X
Entstehung:
Anmerkungen:
Beschreibung:
Effect of strain rate on α-lath thickness of TC17 alloy with a basketweave microstructure was studied in the present work. For this purpose, this alloy was deformed in the β phase region and subsequently soluted and aged in α+β phase region. Moreover, optical micrograph (OM) and electron backscatter diffraction (EBSD) were applied to analyze the change of lath thickness at different strain rates. The result showed that α-lath thickness increased with increasing strain rate. This phenomenon was possibly attributed to the higher degree of variant selection (DVS) at higher strain rate (0.1 s-1). The higher DVS was beneficial for the formation of parallel α-lath colonies during cooling after deformation. And, these parallel α-lath colonies would more easily grow up and coarsen during subsequent heat treatment. Therefore, α-lath at higher strain rate is more thick.