Transactions of Materials and Heat Treatment

Title：Improvement of forging billet for Ti60 titanium alloy blisk

Authors： Xia Chunlin Ye Junqing Li Rudong Wei Ke Wang Haiju

Unit： Guizhou Anda Aviation Forging Co. Ltd. Nanchang Hangkong University

KeyWords： Ti60 titanium alloy improved forging isothermal forging blisk flaw detection clutter

ClassificationCode：TG316

year,vol(issue):pagenumber：2022,47(5):65-72

Abstract：

In order to decrease the flaw detection clutter of Ti60 titanium alloy blisk forgings, the forging billet of Ti60 titanium alloy was forged by improved forging, and the trial production of Ti60 titanium alloy blisk forgings was trial-manufactured and verified by the isothermal forging method. The trial production results show that the improved forging can improve the microstructural homogeneity of intermediate billet and reduce the clutter level. Under the deformation temperature of(Tβ-40) ℃, the deformation rate of 1.5-0.2 mm·s-1 and the equivalent strain of 0.3-1.2, the forging billet obtains the ideal bimorphic microstructure and excellent high-temperature mechanical properties, and the sample durability reaches 388 h under the temperature of 600 ℃ and the stress of 310 MPa. After holding for 20 min at the high temperature of 600 ℃, the tensile strength, the yield strength, the elongation and the reduction of area for the tensile sample are 677 MPa, 557 MPa, 15%, 40%, respectively. And the test was carried out according to the requirements of water immersion test HB/Z 37—1982. It is obtained that the clutter level is Φ0.8-12.0 dB, which meets the acceptance standard requirements of a Ti60 titanium alloy blisk forgings.

Funds：

作者简介：夏春林 (1986-)，男，硕士，高级工程师，E-mail：xchl0221@163.com

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