Influence of the incremental deformation during rotary forging on the microstructure behaviour of a nickel-based superalloy

Loyda, A.; Reyes, Luis A.; Hernández-Muñoz, Guadalupe Maribel; García-Castillo, F. A.; Zambrano‐Robledo, Patricia del Carmen

doi:10.1007/s00170-018-2105-8

Cited by 17 publications

(4 citation statements)

References 37 publications

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“…Only the elongation is lower in single-remelted samples, probably due to the higher presence of precipitates which act as void-nucleating points. [37][38][39] The non-influence of grain boundary carbides on ultimate tensile strength is reported by Wang et al [36] and Chen and Gan, [35] which analyze, respectively, the effect of grain boundary M 23 C 6 carbides in high nitrogen austenitic stainless steel and AISI 316 stainless steel. In both works, despite a severe reduction of impact properties, only a moderate reduction in elongation to rupture is observed.…”

Section: B Mechanical Characterizationmentioning

confidence: 99%

Characterization and Comparison of Single VAR-Remelted and Double VAR-Remelted Ingots of INCOLOY ® Alloy 925

Ducoli

Mombelli

Gruttadauria

et al. 2022

Metall Mater Trans A

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Alloy 925 is a nickel-based superalloy usually produced by Electric Arc Furnace (EAF), followed by Argon Oxygen Decarburization (AOD) and Vacuum Arc Remelting (VAR). It can undergo to one VAR remelting (EAF-AOD-VAR) or, if necessary due to process instabilities, two VAR remelting (EAF-AOD-VAR-VAR). The characterization of A925 ingots remelted one or two times after forging and aging was carried out to enhance differences. The VAR remelting rate of single- or double-remelted samples was correlated to metallurgical and mechanical properties. The microstructure observation revealed a higher quantity of MC, M23C6 and TiN precipitates (both inter- and intragranular) in single-remelted samples: the intergranular ones increase in quantity going from the ingot center position to the external one where cluster of titanium nitrides were detected. The higher presence of intergranular precipitates causes a high deterioration of impact toughness (71.1 ± 12.7 vs 90.5 ± 7.1 J) and lateral expansion (0.91 ± 0.18 vs 1.14 ± 0.07 mm). On the other hand, the number of remelting does not affect other tensile properties and hardness. Therefore, the different behavior of forged ingots at single and double remelting are not related to the number of remelting and remelting rate. On the other hand, the slightly lower toughness of single-remelted forged ingots can be corelated to defects derived from casting.

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Section: B Mechanical Characterizationmentioning

confidence: 99%

Characterization and Comparison of Single VAR-Remelted and Double VAR-Remelted Ingots of INCOLOY ® Alloy 925

Ducoli

Mombelli

Gruttadauria

et al. 2022

Metall Mater Trans A

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“…Loyda et al 1 studied the effect of rotary forging on the microstructure behavior of a nickel-based superalloy. Zhang 2 studied the parameters of force and energy during the rolling process and derived the calculation formula, it can provide the basis for equipment development.…”

Section: Introductionmentioning

confidence: 99%

Research on plastic deformation law and forming technology of rotary forging with multi-cone rolls

Wang

Zhu

Liu

et al. 2021

Advances in Mechanical Engineering

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With the development of industrial technology, the application of large diameter-thickness ratio integral discs in various high precision vessels is becoming more and more important. At present, the forming processes of large-diameter disc mainly includes welding and multiple local upsetting, but these processes exhibit large defects and cannot meet the requirements of industry. Therefore, a new metal plastic forming technology, namely rotary forging with multi-cone rolls (MCRs) is proposed to integrally form large diameter and ultra-thin discs. The forming process was simulated by DEFORM-3D finite element analysis software, and the deformation characteristics of MCRs disc were revealed. The results show that the axial plastic deformation of disc can be divided into three stages. In the first stage, the plastic deformation area was basically symmetrical, and the deformation was relatively stable. In the second stage, the plastic deformation area on both sides was different, which was in the unstable stage and easy to produce defects. In the third stage, the plastic deformation area was approximately symmetrical for a long time, and the plastic deformation was stable. At the same time, the influence of process parameters on the form characteristics of MCRs, the main defects in the deformation process and the preventive measures were studied. The research results are helpful to better understand the metal plastic forming technology of MCRs and promote the further development of MCRs.

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“…Zhuang and Dong 9 analyzed the effect of processing factors on cold orbital forging of a spur bevel gear. Loyda et al 10 studied the influence of incremental deformation during rotary forging on the microstructure of a disc fabricated with nickelbased superalloy, and explained the recrystallization mechanism in details. Pe´rez 4 investigated the impact of rotary forging process on microstructure and texture evolution of Jethete M152 flanged-test pieces, and found that uniaxial compression was the main deformation mode.…”

Section: Introductionmentioning

confidence: 99%

Investigation on clinching assembly process of automobile wheel hub bearings

Chen

Yang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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In this study, a precise and high-efficient clinching assembly strategy was proposed to improve the automobile wheel hub bearing’s reliability of service quality consistency. The structure of the wheel hub bearing was first improved to enable the requirement of axial working clearance. During assembly, the accuracy of each bearing was monitored online via micro-laser sensor to achieve precise and consistent axial working clearance. The effect of processing parameters were analyzed via simulation analysis. According to simulation results, it only cost 2.35 s to complete assembly process and the optimal clamping force of 38.8 kN was generated. The prototype bearings were manufactured and exhibited a reliable service life of more than 250,000 km, which verified the reasonability of the proposed clinching assembly strategy. Additionally, the assembly mechanism was further analyzed. The ferrite in the clinched hub shaft end was gradually lengthened and the cementite aggregation was improved.

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Influence of the incremental deformation during rotary forging on the microstructure behaviour of a nickel-based superalloy

Cited by 17 publications

References 37 publications

Characterization and Comparison of Single VAR-Remelted and Double VAR-Remelted Ingots of INCOLOY ® Alloy 925

Characterization and Comparison of Single VAR-Remelted and Double VAR-Remelted Ingots of INCOLOY ® Alloy 925

Research on plastic deformation law and forming technology of rotary forging with multi-cone rolls

Investigation on clinching assembly process of automobile wheel hub bearings

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