Calculation of Thermal Stresses in Mo-Ti FGM with a Continuous Change of Composition

Lian Meng Zhang; Qiang Shen; Zhong Min Yang

doi:10.4028/www.scientific.net/MSF.475-479.1529

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HomeMaterials Science ForumMaterials Science Forum Vols. 475-479Calculation of Thermal Stresses in Mo-Ti FGM with...

Calculation of Thermal Stresses in Mo-Ti FGM with a Continuous Change of Composition

Abstract:

In the present paper, a kind of Mo-Ti system functionally graded material with a continuous change of composition was formed via particle settling method at first, and then it was desified by hot-press under 1473K-30MPa-1h. Finally, by using an axisymmetric finite element method, the fabricated thermal stresses in a disk-shaped Mo-Ti FGM were calculated. The results showed that the thermal stresses changed continuously with the smooth variation of graded composition. The residual tensile stresses in the Mo-Ti FGM with a continuously changed composition were located in the medial region of graded layer and the radial compressive stresses distributed in the Mo- and Ti-rich sides. The calculated maximum residual tensile stresses in the Mo-Ti FGM were much lower than the bending strength of Mo-Ti alloys, which demonstrated that during fabrication no damages occurred in the Mo-Ti FGM with continuously graded composition.

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Periodical:

Materials Science Forum (Volumes 475-479)

Pages:

1529-1532

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.475-479.1529

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Online since:

January 2005

Authors:

Lian Meng Zhang, Qiang Shen, Zhong Min Yang

Keywords:

Functionally Graded Material (FGM), Mo-Ti, Thermal Stress

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