Microstructure and properties after deformation and aging process of A286 superalloy

Liu, Sicheng; Gao, Yuan; Lin, Zhong-Liang; Guo, Shaoli; Zhang, Xiaobin; Yin, Xin

doi:10.1007/s12598-018-1171-2

Cited by 17 publications

(4 citation statements)

References 15 publications

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“…The flow stress obtained from the thermal simulation experiment can not only reflect the performance of the material during processing in a high temperature state but also manifest the change in the microstructure of the material during thermal deformation 1 , 2 . At present, many scholars use the control variable method to obtain the flow curve and apply the flow curve as the basis for further research on the thermal deformation behavior of the material and the mechanism of tissue evolution 3 – 5 .…”

Section: Introductionmentioning

confidence: 99%

Data correction and verification of thermal simulation experiments under the influence of bulging belly

Zheng,

Xu,

Zou

et al. 2023

Sci Rep

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During the thermal simulation compression test, the formation of an obvious bulge in the specimen leads to a certain deviation between the calculated and actual values of the true stress. The finite element method was used to simulate the single-pass compression of specimens of 34CrNi3MoV steel and obtain the actual nonuniform deformation of the bulging belly during the compression process, and the results were applied to correct experimental flow curves. The results showed that the deformation conditions had a significant influence on the nonuniformity of the specimen deformation during the compression process, and all the modified flow curves were lower than the original ones. The size of the bulge and the metal flow line in the finite element simulation were consistent with the test results. The load value obtained by using the modified flow curve was similar to the load value measured in the test, which indicated that the modified flow curve was very close to the real flow force curve of the material. The method used to modify the flow force curve is simple and practical.

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Section: Introductionmentioning

confidence: 99%

Data correction and verification of thermal simulation experiments under the influence of bulging belly

Zheng,

Xu,

Zou

et al. 2023

Sci Rep

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“…It has excellent high temperature strength, good oxidation and hot corrosion resistance, good fatigue performance and fracture toughness and has been an indispensable advanced engineering material for high-temperature application in aerospace and energy fields [1]. The A286 iron-based superalloy containing 25% Ni (wt.%) and 15% Cr has high yield strength and plasticity, good corrosion resistance and excellent creep resistance below 650 • C [2,3]. It has wide applications in replacing expensive nickel-based and cobalt-based superalloy to manufacture the turbine disk as well as the pipelines and valves of the fourth-generation supercritical water reactor (SCWR).…”

Section: Introductionmentioning

confidence: 99%

“…The γ is the main strengthening phase of A286 alloy, composed of Ni 3 (Ti, Al), which is coherent with the matrix [6]. The strength of A286 alloy can be increased by changing the aging temperature from 650 • C to 680 • C to control the precipitation of the γ phase [2]. However, the excessively high temperature of aging at 730 • C causes the dissolution of the γ phase and the formation of the η phase, resulting in a decrease in creep resistance and the intergranular fracture [7].…”

Section: Introductionmentioning

confidence: 99%

Evolution of Recrystallization Texture in A286 Iron-Based Superalloy Thin Plates Rolled via Various Routes

Zhang,

Wang

et al. 2023

Metals

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The A286 iron-based superalloy has wide-ranging applications in replacing expensive nickel-based and cobalt-based superalloy to manufacture the turbine disk as well as the pipelines and valves of the fourth-generation supercritical water reactor (SCWR) working below 650 °C. The recrystallization texture importantly affects the mechanical properties and oxidation resistance of superalloys. However, very few investigations are available on the recrystallisation texture of A286 alloy. The current work reports the texture of A286 alloy fabrication using various rolling routes, including one-stage cold rolling with the rolling rates of 83% (Route I) and 91% (Route II), and two-stage cold rolling with the rolling rate of 83% + 50% (Route III). Route III is preferentially recommended to manufacture A286 alloy thin plates due to the obviously reduced work hardening as well as the weakened recrystallization texture and anisotropy; moreover, compared with other routes, the recrystallized grain size of Route III did not significantly coarsen. We also revealed the mechanism for the effect of cold rolling textures on the final recrystallization texture and the role of the deformation twin in {110} <115> grain. In this study, recrystallization texture develops through two independent mechanisms related to different deformation microstructures, including the recrystallization texture inherited from deformation texture and the recrystallization texture depended on deformation twins.

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“…Incoloy A286 alloy exhibits good mechanical properties and fatigue strength. Additionally, it has good corrosion resistance through the high chromium element content at service conditions [12].…”

Section: Introductionmentioning

confidence: 99%

Microstructural and mechanical characterization of powder-pack boronized Incoloy A286 superalloy

Türkmen¹,

Korkmaz²

2021

Surf. Topogr.: Metrol. Prop.

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In this study, Incoloy A286 superalloy were boronized successfully by powder-pack boronizing process at 850 °C, 900 °C and 950 °C for 4 h by using a boronizing powder mixture containing H3BO3 as boron source. The thickness and morphology of the boride layer was identified by microstructural examinations. The boride layer with complex, compact and smooth morphology was formed on the surface of the samples. As a result of XRD analyses, it was determined that the compact boride layer was formed many phases such as FeB, Fe2B, Fe3B, CrB and Ni4B3 etc. It was specified that the average hardness value of the boride layer was approximately between 2400 and 3000 HV by microhardness tests. Also the graphs of friction coefficient and values of the specific wear rate were obtained by performing ball on disk wear tests. It was identified that the specific wear rate of boronized samples was approximately 9.5 times lower than that of unboronized samples.

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Microstructure and properties after deformation and aging process of A286 superalloy

Cited by 17 publications

References 15 publications

Data correction and verification of thermal simulation experiments under the influence of bulging belly

Data correction and verification of thermal simulation experiments under the influence of bulging belly

Evolution of Recrystallization Texture in A286 Iron-Based Superalloy Thin Plates Rolled via Various Routes

Microstructural and mechanical characterization of powder-pack boronized Incoloy A286 superalloy

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