Microstructural homogeneity and high-temperature tensile uniformity of TC4 alloy disk forgings

WANG Ying; LI Nan; PENG Wenya; YU Shuai; LIU Jianrong; GUO Hailong; WANG Qingjiang

doi:10.7513/j.issn.1004-7638.2026.01.007

Volume 47 Issue 1

Feb. 2026

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WANG Ying, LI Nan, PENG Wenya, YU Shuai, LIU Jianrong, GUO Hailong, WANG Qingjiang. Microstructural homogeneity and high-temperature tensile uniformity of TC4 alloy disk forgings[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 62-70. doi: 10.7513/j.issn.1004-7638.2026.01.007

Citation:

WANG Ying, LI Nan, PENG Wenya, YU Shuai, LIU Jianrong, GUO Hailong, WANG Qingjiang. Microstructural homogeneity and high-temperature tensile uniformity of TC4 alloy disk forgings[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 62-70. doi: 10.7513/j.issn.1004-7638.2026.01.007

Citation:

WANG Ying, LI Nan, PENG Wenya, YU Shuai, LIU Jianrong, GUO Hailong, WANG Qingjiang. Microstructural homogeneity and high-temperature tensile uniformity of TC4 alloy disk forgings[J]. IRON STEEL VANADIUM TITANIUM, 2026, 47(1): 62-70. doi: 10.7513/j.issn.1004-7638.2026.01.007

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Microstructural homogeneity and high-temperature tensile uniformity of TC4 alloy disk forgings

doi: 10.7513/j.issn.1004-7638.2026.01.007

1.
Hunan Aviation Powerplant Research Institute, Aero Engine Corporation of China, Zhuzhou 412002, Hunan, China
2.
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China
3.
School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, Liaoning, China

More Information

Received Date: 2025-10-30
Accepted Date: 2025-12-18
Rev Recd Date: 2025-12-03

Available Online: 2026-02-28

Publish Date: 2026-02-28

Abstract

Abstract

A TC4 titanium alloy disk was fabricated via die forging followed by solution and aging heat treatment. The microstructure and corresponding high temperature tensile properties were systematically investigated across three representative regions. The results reveal significant radial non-uniformity in high temperature tensile properties, the rim region exhibits the highest strength, the 1/2R region appears the lowest, while ductility shows little difference among the three regions. Microstructure, texture and fracture surface analyses indicate that the non-uniformity in high temperature tensile properties originates from variations in the morphology and texture of α phase. The rim and hub regions contain fine secondary α phase with basket-weave morphology, which effectively suppresses dislocation motion and void coalescence, thereby enhancing strength without compromising ductility. In contrast, the 1/2R region contains coarser secondary α phase with a colony-like morphology, promoting localized void growth and early fracture. In addition, due to the high Schmidt factor of the basal slip of the α phase in the 1/2R region, the tensile strength is reduced.
- TC4 titanium alloy,
- disk forging,
- microstructure,
- high temperature tensile properties

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References(21)

References

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