CREEP DEFORMATION MECHANISMS IN CARBIDE PRECIPITATE STRENGTHENED NICKEL-BASED SUPERALLOYS AT ELEVATED TEMPERATURES

Creep processes in MAR-M247 Nickel - Base Superalloy were studied at elevated temperatures. The stress exponents of creep rate n and time to fracture m indicate power-low (dislocation) creep regime and suggest the same controlling mechanism for the creep deformation and fracture. The variation of values of parameter n within the interval of applied stress may indicate changes in the rate-controlling creep deformation mechanism. The possibility of using of Monkman-Grant relationship for creep life prediction was demonstrated.

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Creep deformation mechanisms in a γ titanium aluminide

Materials Science and Engineering A ◽

10.1016/j.msea.2016.07.109 ◽

2016 ◽

Vol 673 ◽

pp. 616-623 ◽

Cited By ~ 5

Author(s):

Zakaria Abdallah ◽

Rengen Ding ◽

Nigel Martin ◽

Mark Dixon ◽

Martin Bache

Keyword(s):

Creep Deformation ◽

Titanium Aluminide ◽

Deformation Mechanisms

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Deformation Mechanisms in High-Purity Fe–50Cr(–5W) Alloys at Elevated Temperatures

phys stat sol (a) ◽

10.1002/(sici)1521-396x(199806)167:2<481::aid-pssa481>3.0.co;2-i ◽

1998 ◽

Vol 167 (2) ◽

pp. 481-494 ◽

Cited By ~ 18

Author(s):

K. Kako ◽

S. Isozaki ◽

S. Takaki ◽

K. Abiko

Keyword(s):

High Purity ◽

Elevated Temperatures ◽

Deformation Mechanisms

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Tensile behaviour of rubber-modified polyester resin materials

e-Polymers ◽

10.1515/epoly.2010.10.1.547 ◽

2010 ◽

Vol 10 (1) ◽

Author(s):

M.O. Munyati ◽

P.A. Lovell

Keyword(s):

Tensile Properties ◽

Real Time ◽

Small Angle ◽

Elevated Temperatures ◽

Polyester Resin ◽

Unsaturated Polyester ◽

Shell Morphology ◽

Deformation Mechanisms ◽

Tensile Behaviour ◽

X Ray

AbstractPolymer blends comprising an unsaturated polyester resin and dispersed particles were prepared. Rubbery particles were synthesized by sequential emulsion polymerization and had core-shell morphology. Curing of materials was carried out at ambient temperature and subsequently post cured at elevated temperatures to obtain materials of consistent properties. Materials made of different particle content were prepared and their tensile properties evaluated. Effect of matrix ductility was investigated by inclusion of ethyl acrylate in the polyester resin composition. Deformation mechanisms involved in these materials were examined using transmission electron microscopy (TEM) and real-time small angle X-ray spectroscopy (RT-SAXS). Incorporation of rubbery particles in the polyester resin was found to generally improve the tensile properties of the materials. Furthermore, the deformation mechanisms were found to involve cavitation/debonding processes as evidenced from stress whitening in the failed specimen and from real-time small angle X-ray scattering experiments.

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Status of the Development of Creep Resistant Magnesium Materials for Automotive Applications

Materials Science Forum ◽

10.4028/www.scientific.net/msf.638-642.73 ◽

2010 ◽

Vol 638-642 ◽

pp. 73-80 ◽

Cited By ~ 12

Author(s):

Karl Ulrich Kainer ◽

Yuan Ding Huang ◽

Hajo Dieringa ◽

Norbert Hort

Keyword(s):

Magnesium Alloys ◽

Creep Deformation ◽

Creep Resistance ◽

Deformation Mechanisms ◽

Automotive Applications ◽

Development Status ◽

Microstructural Control

The present paper presents the development status of creep resistant magnesium materials. It reviews the creep deformation mechanisms of magnesium alloys. Based on these mechanisms, several effective approaches to improve the creep resistance are discussed, including alloying, microstructural control and the development of new monolithic alloys and composites.

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