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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2015, Vol. 36 ›› Issue (11): 3742-3750.doi: 10.7527/S1000-6893.2015.0023

• Material Engineering and Mechanical Manufacturing • Previous Articles     Next Articles

Optimization of heat treatment process parameter for nickel-base superalloy X-750 by nonlinear ultrasonic nondestructive evaluation method

LI Weibin, QIN Xiaoxu   

  1. Department of Aeronautics, Xiamen University, Xiamen 361005, China
  • Received:2014-10-30 Revised:2015-01-15 Online:2015-11-15 Published:2015-01-29
  • Supported by:

    National Natural Science Foundation of China (51405405);Fundamental Research Funds for the Central Universities (20720140511)

Abstract:

It is necessary to optimize heat treatment process parameter to achieve better material properties of metallic materials.Nonlinear ultrasonic nondestructive evaluation technology is an effective approach to characterize the material's microstructural change, which can be used to evaluate and optimize heat treatment process by nonlinear ultrasonic waves. Nonlinear ultrasonic method is used to evaluate the heat treated X-750 alloy material.Material properties of specimens after heat treatments are evaluated and predicted by the acoustic nonlinear responses of ultrasonic wave propagation. Conventional linear ultrasonic approaches are also used to make comparisons. It is found that the material properties are significantly improved after heat treatment, and better material properties correspond to less nonlinear response of ultrasound propagation.The qualitative evaluation of three different heat treatment processes for X-750 alloy is provided by ultrasonic nonlinear response in the specimens and shows the optimal heat treatment process for this materials.It can be concluded that the nonlinear acoustic technique can be used to evaluate the heat treatment condition nondestructively and to optimize the process with the improved sensitivity compared with conventional linear ultrasonic approach.

Key words: X-750 alloy, heat treatment, parameter optimization, nonlinear ultrasonics, material properties

CLC Number: