Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144616
Title: Cyclic deformation and lattice strain distribution of high Nb containing TiAl alloy
Authors: Ding, Jie
Shi, Shan
Dong, Zhili
Lin, Junpin
Ren, Yang
Wu, Xiaodong
Chang, Hui
Zhou, Lian
Keywords: Engineering::Materials
Issue Date: 2020
Source: Ding, J., Shi, S., Dong, Z., Lin, J., Ren, Y., Wu, X., . . . Zhou, L. (2020). Cyclic deformation and lattice strain distribution of high Nb containing TiAl alloy. Materials Science and Technology, 36(14), 1507–1515. doi:10.1080/02670836.2020.1795994
Journal: Materials Science and Technology
Abstract: Low cycle fatigue of lamellar TiAl with 8.5 at.-%Nb was studied with a total strain amplitude of 0.28% at three temperatures: room temperature, 750°C and 900°C. At room temperature, the material exhibited cyclic hardening and the fracture mode was mainly interlamellar. At 750°C and 900°C, the material showed cyclic softening and the fracture mode was translamellar. The lattice strain in γ phase was almost tensile and larger tensile lattice strain in γ phase seems detrimental. Besides, the opposite direction of {201}γ and {100}α2 lead to crack propagation along α2/γ interfaces. B2/βo phase always suffered compressive lattice strain in the tests. The destruction of lamellar microstructure was the reason for colony refinement at 750°C and 900°C.
URI: https://hdl.handle.net/10356/144616
ISSN: 0267-0836
DOI: 10.1080/02670836.2020.1795994
Rights: © 2020 Institute of Materials, Minerals and Mining. All rights reserved. This paper was published in Materials Science and Technology and is made available with permission of Institute of Materials, Minerals and Mining.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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