Study on constitutive behavior of Ti-45Nb alloy under transversal ultrasonic vibration-assisted compression


Ultrasonic vibration technology has been widely applied in plastic forming processes due to its advantages of material properties improvement. In this study, a transverse ultrasonic vibration-assisted compression (TUVC) system with the range of vibration amplitude from 16 to 48 µm is developed to compress the difficult-to-deformation materials. The experiment found that the temperature of the compressed sample with the vibration amplitude of 38 µm arrived at 164 ℃, hence the current constitutive models are deficient for the description of TUVC deformation behavior with the large vibration amplitudes. The results show that the flow stress declines under the coupling action of volume effect and surface effect, especially the amplitude is larger than 38 µm. To accurately depict the constitutive behavior of titanium alloy under TUVC, a hybrid constitutive model considering the difference of softening mechanism was proposed based on crystal plasticity theory, and the predicted curves are in good agreement with experimental results. Finally, the microstructure further revealed the differences of softening mechanism in TUVC, and numerous secondary α phase was precipitated. Consequently, the studies provide an insight into the deformation mechanism of TUVC and promote the application of ultrasonic vibration-assisted forming for the difficult-to-deformation alloy.

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The authors would like to acknowledge the editors and the anonymous referees for their insightful comments. This work is supported by the National Natural Science Foundation of China (51875283); the Fundamental Research Funds from COSTIND (2019-JCJQ-JJ-341); and the Aeronautical Science Foundation of China (2017ZE52052).


Wenliang Chen: National Natural Science Foundation of China (51875283). Zhenchao Qi: Fundamental Research Funds from COSTIND (2019-JCJQ-JJ-341). Zhenchao Qi: Aeronautical Science Foundation of China (2017ZE52052).

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XW designed the study, performed the research, analysis data, and wrote the paper. ZQ directed experiments and data processing. WC provided experimental condition, modified the paper framework.

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Correspondence to Zhenchao Qi.

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Author Xingxing Wang declares that he has no conflict of interest. Author Zhenchao Qi declares that he has no conflict of interest. Author Wenliang Chen declares that he has no conflict of interest.

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Wang, X., Qi, Z. & Chen, W. Study on constitutive behavior of Ti-45Nb alloy under transversal ultrasonic vibration-assisted compression. Archiv.Civ.Mech.Eng 21, 31 (2021).

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  • Transversal ultrasonic vibration-assisted compression
  • Surface effect
  • Flow stress
  • Constitutive behavior
  • Microstructure