Investigation of the Mechanical Properties and Microstructure of Nickel Superalloys Processed in Shear Forming / Identyfikacja Właściwości Mechanicznych Oraz Mikrostruktury Superstopów Niklu Przetwarzanych W Procesie Kształtowania Obrotowego

Żaba, K.; Nowosielski, M.; Puchlerska, Sandra; Kwiatkowski, Michał; Kita, P.; Głodzik, M.; Korfanty, K.; Pociecha, D.; Pieja, T.

doi:10.1515/amm-2015-0426

Cited by 6 publications

(2 citation statements)

References 8 publications

(9 reference statements)

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“…Besides, Lin et al [29] found that the discontinuous dynamic recrystallization plays a major role on the nucleation of dynamic recrystallization (DRX) during the hot deformation of GH4169 superalloy. Also, the variations of microstructure for several typical nickel-based superalloys are investigated by Huda et al [30], Żaba et al [31], Cheng et al [32], Yang et al [33], Zhang et al [34]. Liu et al [35,36] developed the accurate CA models to describe the dynamic and static recrystallization behaviors of GH4169 superalloy.…”

Section: Introductionmentioning

confidence: 99%

Study of Flow Softening Mechanisms of a Nickel-Based Superalloy With Δ Phase

Lin

Chen

et al. 2016

Archives of Metallurgy and Materials

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The flow softening behaviors of a nickel-based superalloy with δ phase are investigated by hot compression tests over wide ranges of deformation temperature and strain rate. Electron backscattered diffraction (EBSD), optical microscopy (OM), and scanning electron microscopy (SEM) are employed to study the flow softening mechanisms of the studied superalloy. It is found that the flow softening behaviors of the studied superalloy are sensitive to deformation temperature and strain rate. At high strain rate and low deformation temperature, the obvious flow softening behaviors occur. With the increase of deformation temperature or decrease of strain rate, the flow softening degree becomes weaken. At high strain rate (1s−1), the flow softening is mostly induced by the plastic deformation heating and flow localization. However, at low strain rate domains (0.001-0.01s−1), the effects of deformation heating on flow softening are slight. Moreover, the flow softening at low strain rates is mainly induced by the discontinuous dynamic recrystallization and the dissolution of δ phase (Ni3Nb).

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Section: Introductionmentioning

confidence: 99%

Study of Flow Softening Mechanisms of a Nickel-Based Superalloy With Δ Phase

Lin

Chen

et al. 2016

Archives of Metallurgy and Materials

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“…For many years, sheets composed of difficult-to-deform alloys have been widely used in the aviation industry [ 1 , 2 ]. In addition to conventional methods, electromagnetic forming methods [ 3 ] and those using flexible tools [ 4 , 5 ] are used.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research and Numerical Modelling of the Cold Forming Process of the Inconel 625 Alloy Sheets Using Flexible Punch

Balcerzak,

Żaba,

Hojny

et al. 2023

Materials

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The paper presents the numerical and experimental results of research aimed at determining the influence of hardness in the range of 50–90 Shore A of layered tools composed of elastomeric materials on the possibility of forming Inconel 625 nickel-based alloy sheets. A stamping die composed of 90MnCrV8 steel (hardness 60HRC) was designed for forming embosses in drawpieces, ensuring various stress states on the cross-section of the formed element. The principle of operating the stamping die was based on the Guerin method. The finite-element-based numerical modelling of the forming process for various configurations of polyurethane inserts was also carried out. The drawpieces obtained through sheet forming were subjected to geometry tests using optical 3D scanning. The results confirmed that, in the case of forming difficult-to-deform Inconel 625 Ni-based alloy sheets, the hardness of the polyurethane inserts significantly affected the geometric quality of the obtained drawpieces. The assumptions determined in numerical simulations were verified in experimental studies. Based on the test results, it was concluded that the selection of polyurethane hardness should be determined by the shape of the formed element. Significant nonuniform sheet metal deformations were also found, which may pose a problem in the process of designing forming tools and the technology of the plastic forming of Inconel 625 Ni-based alloy sheets.

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