Microstructure and Corrosion Behaviour of Ni-P Laser Surface Alloys.

García‐Alonso, M. C.; Escudero, M.L.; Lopez, Vanessza; Macı́as, A.

doi:10.2355/isijinternational.36.172

Cited by 8 publications

(3 citation statements)

References 2 publications

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“…Ni base alloy is of good heat-resisting ability, it is mostly applied in the engine of airplane, the turbojet and the nuclear reactor [1]. Ni base alloy ceramic composite coating containing spheroidal ceramic grains fabricated through vacuum fusion sintering process can acquire high strength and good thermal fatigue resistance [2,3].…”

Section: Introductionmentioning

confidence: 99%

Thermal Expansion Coefficient of Ni Base Alloy Composite Coating Containing Spheroidal Ceramic Grains

Liu¹,

Ni²,

Zhang³

et al. 2010

AMM

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Ni base alloy composite coating containing spheroidal ceramic grains can be fabricated by a vacuum fusion sintering method. Composite coating was mainly composed of Ni base alloy and spheroidal ceramic grains with random orientation. The three-phase model is used to determine the thermal expansion coefficient of the composite coating. First, Eshebly-Mori-Tanaka method was used to determine thermal disturbance strain in two-phase cell aroused thermal inconsistency. Then, average thermal strain in the two-phase cell aroused by thermal inconsistency is gained by the means of volume equilibration. The two-phase cell is transverse isotropy and has two independent thermal expansion coefficients. Finely, based on mean strain of Ni base alloy ceramic composite coating containing spheroidal ceramic grains, the effective thermal expansion coefficient of the composite coating is obtained by considering random orientation of two-phase cells. Ni base alloy composite coating containing spheroidal ceramic grains is isotropy and has one independent thermal expansion coefficient.

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Section: Introductionmentioning

confidence: 99%

Thermal Expansion Coefficient of Ni Base Alloy Composite Coating Containing Spheroidal Ceramic Grains

Liu¹,

Ni²,

Zhang³

et al. 2010

AMM

View full text Add to dashboard Cite

show abstract

“…Ni base alloy is of good heat-resisting ability, it is mostly applied in the engine of airplane, the turbojet and the nuclear reactor [1]. Ni base alloy ceramic composite coating can be fabricated by a vacuum fusion sintering method [2].…”

Section: Introductionmentioning

confidence: 99%

Residual Stress Field of Ellipsoidal Ceramic Particles Ni-Base Alloy Composite Coating

Liu¹,

Zheng²,

Yao³

et al. 2007

KEM

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Ni base alloy ceramic composite coating fabricated through vacuum fusion sintering process can acquire high strength and good thermal fatigue resistance. Composite coating was mainly composed of Ni base alloy and ellipsoidal ceramic particles with random orientation. The three-phases model is used to study the thermal expansion strains in composite coating. First, Eshebly-Mori-Tanaka method was used to determine effective eigen strain of two-phases model formed by the ellipsoidal matrix shell being around a ellipsoidal ceramic particle, then disturbance strain in two-phases model aroused thermal inconsistency is obtained. Finally thinking average stress in effective matrix vanish, the residual stress field in Ni base alloy and particles can be gotten by considering random orientation of two-phases models. It will exert influence on strength and fatigue life of the composite coating.

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“…Ni base alloy is of good heat-resisting ability, it is mostly applied in the engine of airplane, the turbojet and the nuclear reactor [1], so its thermal fatigue damage cannot be avoided. Ni base alloy ceramic composite coating is a mechanic disordered composite [2], a large number of ceramic grains are distributed in ductile matrix. The experiments show that cracks produce mostly between ceramic grains and Ni base alloy matrix and grow mostly along boundary of phases.…”

Section: Introductionmentioning

confidence: 99%

Thermal Fatigue Life Prediction of Ni Base Alloy Ceramic Composite Coating

Liu¹,

Ni²,

Wang³

2007

KEM

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Ni base alloy ceramic grain composite coating is used mostly in high temperature condition, so thermal fatigue failure will be easy. If the thermal expansion coefficients and elastic modulus of Ni base alloy and ceramic grain are different, there will be thermal stresses between grain and matrix in thermosyphon. The thermal stress will arouse the initiation and growth of thermal fatigue crack. We use Eshebly-Mori-Tanaka method to study the thermal stress field in matrix and grain. It can be shown that the more difference of thermal expansion coefficients between Ni base alloy and ceramic grain is, the bigger the thermal stress is. The thermal stress relates to volume fractions and elastic constants of Ni base alloy and ceramic grain. Based on low-cycle fatigue crack growth rate formation, the thermal fatigue life was computed. The bigger thermal stress is, the smaller thermal fatigue life is. Thermal life is an exponential function of crack initiation length and critical length.

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Microstructure and Corrosion Behaviour of Ni-P Laser Surface Alloys.

Cited by 8 publications

References 2 publications

Thermal Expansion Coefficient of Ni Base Alloy Composite Coating Containing Spheroidal Ceramic Grains

Thermal Expansion Coefficient of Ni Base Alloy Composite Coating Containing Spheroidal Ceramic Grains

Residual Stress Field of Ellipsoidal Ceramic Particles Ni-Base Alloy Composite Coating

Thermal Fatigue Life Prediction of Ni Base Alloy Ceramic Composite Coating

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