The Correlation Between Grain Orientation Evolution and Stress Rupture Properties of Waspaloy

Zhang, Maicang; Zhang, Qi; Kang, Wei

doi:10.1007/s11661-018-4923-6

Cited by 4 publications

(3 citation statements)

References 19 publications

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“…Kearsey et al [11] noted the dwell fatigue crack growth resistance in Waspaloy and emphasized better damage tolerance over 718 Plus alloy. Zhang M.-C. et al [4] claimed that the gradual increase of initial grain size improves rupture time in this alloy. The microstructural analysis of precipitation-hardened Waspaloy showed the tendency of an initial unimodal γ precipitations size distribution to turn into a bimodal distribution as a result of continued aging [12].…”

Section: Introductionmentioning

confidence: 90%

“…One such superalloy is Waspaloy, characterized by high resistance to creep fatigue, corrosion resistance, and high strength at high temperatures. It is widely used in a variety of components of gas turbines such as blades, seal rings, and disks working at about 700 • C [2][3][4][5]. Moreover, one of the reasons for the most common use of Waspaloy is its excellent isothermal oxidation resistance [6,7] as well as high relaxation limit at the temperature of 600 • C [8].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Hot Workability of Nickel-Based Superalloy Using Activation Energy Map and Processing Maps

et al. 2020

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The stress-strain curves for nickel-based superalloy were obtained from isothermal hot compression tests at a wide range of deformation temperatures and strain rates. The material constants and deformation activation energy of the investigated superalloy were calculated. The accuracy of the constitutive equation describing the hot deformation behavior of this material was confirmed by the correlation coefficient for the linear regression. The distribution of deformation activation energy Q as a function of strain rate and temperature for nickel-based superalloy was presented. The processing maps were generated upon the basis of Prasad stability criterion for true strains ranging from 0.2 to 1 at the deformation temperatures range of 900–1150 °C, and strain rates range of 0.01–100 s−1. Based on the flow stress curves analysis, deformation activation energy map, and processing maps for different true strains, the undesirable and potentially favorable hot deformation parameters were determined. The microstructural observations confirmed the above optimization results for the hot workability of the investigated superalloy. Besides, the numerical simulation and industrial forging tests were performed in order to verify the obtained results.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Evaluation of Hot Workability of Nickel-Based Superalloy Using Activation Energy Map and Processing Maps

et al. 2020

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“…The proportion of <111> oriented grains increased from 50 to 70% because <111> is the preferred orientation of the gold film under certain conditions. Zhang et al (2018) conducted stress fracture experiments on Waspaloy alloy and found that the grain orientation evolution behavior is related to the initial grain size of the sample. Zhang et al (2021) conducted cold rolling experiments on ultra-thin grain-oriented silicon steel and found that changing the shear distribution during the rolling process would change the evolution of grain orientation.…”

Section: Introductionmentioning

confidence: 99%

Research on Modeling Crystallographic Texture Evolution of Al Alloy 7075

et al. 2021

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Crystallographic texture is related to the anisotropy or isotropy of material physical properties, including mechanical performance. The crystallographic effect in micromachining is more significant than that in macro-processing owing to that the depth of the cut and the grain size are in the same order. It is of great significance to model the crystallographic texture evolution induced by mechanical and thermal load during micro-machining to investigate the surface integrity and performance of the finished product. This study performed hot deformation experiments of Al alloy 7075 (AA7075) under various input parameters, including the temperature, temperature rate, stain rate, and strain, which was designed using the Taguchi method. Following that, crystallographic orientation of the samples before and after the deformation was tested using electron back-scattered diffraction (EBSD). Then, the crystallographic texture evolution was modeled with the parameters obtained by fitting a part of the experimental data. The crystallographic texture evolution of AA7075 under different levels of input parameters is studied and analyzed. Finally, the sensitivity of crystallographic orientation evolution to the process parameter is analyzed. The results indicate that these four input parameters have a significant impact on some crystallographic texture of the specimens. The proposed model is instructive in the future investigation of micromachining and microstructure evolution.

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Inhomogeneous Planar Distribution of γ′ Precipitates in Waspaloy Caused by Local Spatial Consumption of MC Carbides

Liu

Zhao

Dong

et al. 2021

J. of Materi Eng and Perform

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The Correlation Between Grain Orientation Evolution and Stress Rupture Properties of Waspaloy

Cited by 4 publications

References 19 publications

Evaluation of Hot Workability of Nickel-Based Superalloy Using Activation Energy Map and Processing Maps

Evaluation of Hot Workability of Nickel-Based Superalloy Using Activation Energy Map and Processing Maps

Research on Modeling Crystallographic Texture Evolution of Al Alloy 7075

Inhomogeneous Planar Distribution of γ′ Precipitates in Waspaloy Caused by Local Spatial Consumption of MC Carbides

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