A model for the creep deformation behaviour of single-crystal superalloy CMSX-4

Ma, Anxin; Dye, David; Reed, Ruth

doi:10.1016/j.actamat.2007.11.031

Cited by 143 publications

(64 citation statements)

References 16 publications

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“…As the channels are widened, shear of the matrix would be promoted while shear would be reduced due to a lower orowan stress increment. This effect has recently been explored for CMSX-4 through the use of constitutive modeling [22]. While there was shown to be a large improvement in creep lifetime by increasing the γ channel width, this effect was small during primary creep.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Composition, Misfit, and Heat Treatment on the Primary Creep Behavior of Single Crystal Nickel Base Superalloys PWA 1480 and PWA 1484

Wilson¹,

Fuchs²

2008

Superalloys 2008 (Eleventh International Symposium)

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Section: Discussionmentioning

confidence: 99%

The Effect of Composition, Misfit, and Heat Treatment on the Primary Creep Behavior of Single Crystal Nickel Base Superalloys PWA 1480 and PWA 1484

Wilson¹,

Fuchs²

2008

Superalloys 2008 (Eleventh International Symposium)

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“…Its significant properties at high temperatures includes impact strength, rupture strength, fracture toughness. The blades which made up of CMSX-4, exhibited good performances as well as extended life span [29][30][31][32]. Hence its physical and mechanical properties were included in this analysis of structural stability of specified cooling designed guide vanes of gas turbine and reduced weight [30].…”

Section: A Cmsxmentioning

confidence: 99%

Scrutiny of the Structural Stability of CMSX-4 and NIMONIC 901 made Gas Turbine Fixed blades with Showerhead Cooling

Saravanan¹,

Karuppasamy²

2017

ijastems

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Abstract-Nowadays, the practice of increasing the inlet temperature of the thermal devices like the gas turbines is existed for improving their net shaft work and their thermal efficiency. The higher the operating temperature affects the structural stability of the components. The structural stability is usually influenced by its profile and other physical shape design, type of cooling design employed, operating temperature, physical chemical nag mechanical properties at elevated temperature and loading conditions. In this research the design and cooling type are predefined. The objective of the research to investigate the appropriateness of the suitability suggested material. The investigations on the materials under the dynamic loading conditions at elevated temperature were made to find the suitability. The Pro -E used to model the blade and the ANSYS R14 work bench employed for conducting the analysis. The investigations were made separately for both materials. The results are discussed towards the appropriateness towards the guide vane designed and a minor correction in design was also suggested.

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“…Based on such plastic constitutive frame and the damage mechanics, many other models with different damage parameters were proposed [8][9][10][11][12]. Furthermore, mechanism based models [13][14][15], microstructure sensitive models [16][17][18] and multi-scale models [19][20][21] have also been built in recent decades. All these models can either elucidate certain physical mechanism to a degree or predict the creep rupture lives of SXs with certain degree of accuracy.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Modeling of the Stress Rupture Behavior of Nickel-Based Single Crystal Superalloys Subject to Multi-Row Film Cooling Holes

Sun

Wei

et al. 2017

Metals

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Abstract:The stress rupture behavior of nickel-base single crystal superalloys is a primary issue facing aero-engine design, which has been studied for more than 40 years. To a large degree, it is the existence of film cooling holes with the introduction of air cooling techniques that adds the extra challenge to the problem. Using both experimental and numerical methods, we explore here the stress rupture behavior of nickel base single crystal plate specimens subject to multi-row film cooling holes. As the numerical simulation part, finite element analysis using Abaqus was performed. Numerical results reveal that the existence of film-holes causes stress concentration and transforms local stress from uniaxial to multi-axial. For the stress distribution of different types of specimens, we defined a stress multiaxiality factor to quantitatively characterize the degree of the stress complexity and examined its effect on the rupture behaviors of the specimens along with the true stress concentration factor. The test was also carried out and results indicated that the creep rupture lives of one-and two-row specimens turn out to be longer than those of non-hole specimen. However, the three-and four-row configuration showed the opposite trend. Among the geometric parameters of film-hole configuration, film-hole row spacing is a predominant one influencing the creep rupture properties. Numerical results agree well with the fracture positions and shapes of specimens.

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A model for the creep deformation behaviour of single-crystal superalloy CMSX-4

Cited by 143 publications

References 16 publications

The Effect of Composition, Misfit, and Heat Treatment on the Primary Creep Behavior of Single Crystal Nickel Base Superalloys PWA 1480 and PWA 1484

The Effect of Composition, Misfit, and Heat Treatment on the Primary Creep Behavior of Single Crystal Nickel Base Superalloys PWA 1480 and PWA 1484

Scrutiny of the Structural Stability of CMSX-4 and NIMONIC 901 made Gas Turbine Fixed blades with Showerhead Cooling

Experimental and Numerical Modeling of the Stress Rupture Behavior of Nickel-Based Single Crystal Superalloys Subject to Multi-Row Film Cooling Holes

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