Effect of Al content on fracture behavior of γ-TiAl alloy

Liang Yuehui; Qi Wenjun

doi:10.7513/j.issn.1004-7638.2022.05.014

Volume 43 Issue 5

Nov. 2022

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Liang Yuehui, Qi Wenjun. Effect of Al content on fracture behavior of γ-TiAl alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 99-105. doi: 10.7513/j.issn.1004-7638.2022.05.014

Citation:

Liang Yuehui, Qi Wenjun. Effect of Al content on fracture behavior of γ-TiAl alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 99-105. doi: 10.7513/j.issn.1004-7638.2022.05.014

Liang Yuehui, Qi Wenjun. Effect of Al content on fracture behavior of γ-TiAl alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 99-105. doi: 10.7513/j.issn.1004-7638.2022.05.014

Citation:

Liang Yuehui, Qi Wenjun. Effect of Al content on fracture behavior of γ-TiAl alloy[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(5): 99-105. doi: 10.7513/j.issn.1004-7638.2022.05.014

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Effect of Al content on fracture behavior of γ-TiAl alloy

doi: 10.7513/j.issn.1004-7638.2022.05.014

Liang Yuehui,
Qi Wenjun^,

College of Mechanical Engineering, Xinjiang University, Urumqi 830017, Xinjiang, China

Received Date: 2022-03-02
Publish Date: 2022-11-01

Abstract

Abstract

The crack growth mechanism and mechanical properties of single crystal γ-TiAl alloy with 45%～49% Al under uniaxial tension at 300 K had been investigated be means of molecular dynamics. The crack development of γ-TiAl alloy with 45% Al content during tensile process and the stress-strain curve and the total energy variation curve with time for γ-TiAl alloy with 45%～49% Al content were analyzed.The results show that Al content affects the properties of the γ-TiAl alloy, and the Lomer Cottrell dislocation produced during the tensile process of γ-TiAl alloy containing 45% Al content has a great influence on the mechanism of crack propagation. Stacking fault, dislocation and holegeneration,dislocation reaction and movement, and decreasing Al content can all contribute to the increasing yield strength of γ-TiAl alloy. The yield stress and elastic modulus of γ-TiAl alloy increase with the decrease of Al content in the range of 45%～49%.
- γ-TiAl alloy,
- fracture behavior,
- Al content,
- molecular dynamics,
- single crystal,
- stress-strain,
- the total energy

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References(25)

References

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