The tensile and tensile-creep deformation behavior of Ti–8Al–1Mo–1V(wt%)

Dastidar, Indraroop G.; Khademi, Vahid; Bieler, Thomas R.; Pilchak, Adam L.; Crimp, Martin A.; Boehlert, Carl J.

doi:10.1016/j.msea.2015.03.059

The tensile and tensile-creep deformation behavior of Ti–8Al–1Mo–1V(wt%)

Journal Article · Mon Mar 30 00:00:00 EDT 2015 · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

DOI:https://doi.org/10.1016/j.msea.2015.03.059· OSTI ID:1778154

Dastidar, Indraroop G. ^[1]; Khademi, Vahid ^[2]; Bieler, Thomas R. ^[2]; Pilchak, Adam L. ^[3]; Crimp, Martin A. ^[2]; Boehlert, Carl J. ^[2]

Michigan State Univ., East Lansing, MI (United States); michigan state university
Michigan State Univ., East Lansing, MI (United States)
Air Force Research Lab., Wright Patterson Air Force Base, OH (United States)

The deformation behavior of titanium (Ti) can be complex due to the lower crystal symmetry of the hexagonal α phase compared with metals based on cubic phases. The tensile and tensile-creep deformation behavior of a Ti–8Al–1Mo–1V(wt%) alloy with a weak crystallographic texture was investigated in-situ straining scanning electron microscopy. Tensile experiments were performed at room temperature (RT), 260°C, 455°C, and 650°C, while tensile-creep experiments were performed at 370°C and 455°C. Electron backscattered diffraction (EBSD) was performed both before and after the deformation, and slip trace analysis was used to identify the activation of the slip modes as a function of temperature and the associated global-stress-state Schmid factors. While extensive slip was characterized during the tensile tests, no twinning was observed. During the RT tensile tests the majority of the slip observed was on prismatic planes, while the relative activity of basal slip increased with temperature, such that at 455°C, basal slip and prismatic slip were equally active. Some grain boundary and triple point cracking occurred during the elevated-temperature tensile deformation, while less slip activity and more grain boundary ledge formation were observed during the tensile-creep deformation. In conclusion, during tensile-creep, basal slip was more prevalent than prismatic slip and some transgranular cracks formed.

View Accepted Manuscript (DOE)

Research Organization:: Michigan State Univ., East Lansing, MI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0001525

OSTI ID:: 1778154

Alternate ID(s):: OSTI ID: 1318782
OSTI ID: 22474998

Journal Information:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Journal Name: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing Vol. 636; ISSN 0921-5093

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Examination of the distribution of the tensile deformation systems in tension and tension-creep of Ti-6Al-4V (wt.%) at 296 K and 728 K Li, H.; Boehlert, C. J.; Bieler, T. R. Philosophical Magazine, Vol. 95, Issue 7 https://doi.org/10.1080/14786435.2014.1001459	journal	February 2015

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36 MATERIALS SCIENCE
Creep
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The tensile and tensile-creep deformation behavior of Ti–8Al–1Mo–1V(wt%)

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