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This study aimed to examine the TEM observation of £¤ precipitate morphology on 713LC superalloy via HIP treatment, and evaluate the effects of HIP treatment on the 713LC alloy. The experimental results showed that an obvious distribution of £¤ precipitations appeared in the £ matrix for 713LC superalloy after HIP treatment. It also demonstrated that the grain sizes are uniform and the porosity of the structure is improved. The strengthening mechanism of the £¤ phase was Ni3Al precipitates, and it increased the strengthened phase and mechanical properties of 713LC superalloy. Meanwhile, the porosity decreased to 60.3%, hardness increased to 40.5 HRC, and density enhanced to 7.92 © 103 kg/m3. Thus, this study confirmed that tensile strength and elongation of 713LC superalloy can be increased through HIP treatment. [doi:10.2320/matertrans.M2011287]

Effects of &gamma;&prime; Precipitation on the Structure and Properties of 713LC Superalloy <i>via</i> HIP Treatment

Effects of γ′ Precipitation on the Structure and Properties of 713LC Superalloy <i>via</i> HIP Treatment