A new, third-generation, single-crystal, casting superalloy

Erickson, G. L.

doi:10.1007/bf03221147

Cited by 96 publications

(61 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The oxidation behavior and the densitynormalized strength of these materials are compared in Figures 2 and 3. [24][25][26][27][28][29][30][31][32][33][34][35][36][37] The reader is cautioned that the data for the different materials were not necessarily obtained under comparable conditions and that all materials shown are under continuous development with progressively improving properties.…”

Section: -17mentioning

confidence: 99%

Ultrahigh-Temperature Materials for Jet Engines

Zhao¹,

Westbrook²

2003

MRS Bull.

262

102

View full text Add to dashboard Cite

This introductory article provides the background for the September 2003 issue of MRS Bulletin on Ultrahigh-Temperature Materials for Jet Engines. It covers the need for these materials, the history of their development, and current challenges driving continued research and development. The individual articles that follow review achievements in four different material classes (three in situ composites-based on molybdenum silicide, niobium silicide, and silicon carbide, respectively-and high-melting-point platinum-group-metal alloys), as well as advances in coating systems developed both for oxidation protection and as thermal barriers. The articles serve as a benchmark to illustrate the progress made to date and the challenges ahead for ultrahigh-temperature jet-engine materials.

show abstract

Section: -17mentioning

confidence: 99%

Ultrahigh-Temperature Materials for Jet Engines

Zhao¹,

Westbrook²

2003

MRS Bull.

262

102

View full text Add to dashboard Cite

show abstract

“…THE newer generations of Ni-base single-crystal superalloys, such as CMSX10N, were designed specifically for improved creep strength and therefore contain increasing amounts of refractory alloying elements such as Re, Ta, and W. [1] However, the significant partitioning behavior of elements, such as Ta and notably Re, results in a severely segregated as-cast microstructure and nonequilibrium inter-dendritic eutectic phases. [2][3][4][5][6] Therefore, a homogenization treatment is required to dissolve the eutectic and to eliminate the cored microstructure.…”

Section: Introductionmentioning

confidence: 99%

On the Roles of Oxidation and Vaporization in Surface Micro-structural Instability during Solution Heat Treatment of Ni-base Superalloys

D’Souza

Welton

West

et al. 2014

Metall Mater Trans A

View full text Add to dashboard Cite

Micro-structural instability at the surface that develops during solution heat treatment of a typical third generation Ni-base superalloy, CMSX10N has been reported. It is shown that elemental Ni vaporizes from the surface during solutioning leading to de-stabilization of c phase. With increasing extent of vaporization, a phase mixture of b, c¢, and the refractory (W and Re-rich) precipitates occur within the surface layers resulting in the complete breakdown of the cuboidal c/c¢ phase morphology that is usually observed. It is demonstrated that the conditions at the surface have a marked effect on the vaporization kinetics and subsequent evolution of surface phases-the presence of a continuous dense oxide such as Al 2 O 3 or the presence of sacrificial Ni-foils interspersed in the furnace significantly suppresses elemental vaporization from the sample surface.

show abstract

“…The addition of these heavy refractory elements has conferred considerable solid solution strengthening with simultaneous increases in high temperature creep resistance. For this reason, the total amount of refractory alloying addition has been gradually increased in the advanced Ni-base superalloys [1,2]. However, the refractory elements segregate severely during solidification [3,4], which often lead to a number of problems such as (i) interdendritic porosity [5], (ii) misoriented grains [6], (iii) freckle formation [6,7], (iv) localized phase instability [8,9], and (v) formation of topologically close-packed (TCP) phases [9,10].…”

Section: Introductionmentioning

confidence: 99%

Solute Redistribution during Planar and Dendritic Growth of Directionally Solidified Ni-Base Superalloy CMSX-10

Seo

Lee

Yoo

et al. 2008

Superalloys 2008 (Eleventh International Symposium)

View full text Add to dashboard Cite

The solute redistribution behavior during directional solidification of the alloy CMSX-10 with planar and dendritic solid/liquid (S/L) interfaces has been investigated by directional solidification and quenching (DSQ) technique. In particular, the elemental partitioning coefficient during the solidification of primary γ and γ/γ′ eutectic was quantitatively estimated by electron probe microanalysis (EPMA) on the sample quenched during planar growth of primary γ and γ/γ′ eutectic, respectively. The EPMA compositional profiles clearly revealed that Scheil solidification occurs during the solidification of primary γ with planar S/L interface. Based on this result, the evolution of γ/γ′ eutectic volume fraction with respect to the solidification rate in dendritic solidification regimes could be rationalized by considering the back-diffusion effect on decreasing the extent of microsegregation. The comparison of the compositional profiles of Cr in the planar grown DSQ sample and the local distribution of Cr in dendritically solidified sample indicated that the solidification of the alloy CMSX-10 completes with the formation of supersaturated γ phase after the γ/γ′ eutectic reaction.

show abstract

A new, third-generation, single-crystal, casting superalloy

Cited by 96 publications

References 4 publications

Ultrahigh-Temperature Materials for Jet Engines

Ultrahigh-Temperature Materials for Jet Engines

On the Roles of Oxidation and Vaporization in Surface Micro-structural Instability during Solution Heat Treatment of Ni-base Superalloys

Solute Redistribution during Planar and Dendritic Growth of Directionally Solidified Ni-Base Superalloy CMSX-10

Contact Info

Product

Resources

About