Temperature Field Measuring and Simulation of CMSX-6 Superalloy during Directional Solidification

Abstract:

A three-dimensional model of CMSX-6 superalloy coupons was built in the paper, temperature field was calculated with software ProCAST. The temperature values of coupons were indicated from the measurement at the rate of 3 mm min^-1 withdrawal velocity during directional solidification process, and the temperature gradient of different location of the coupons were calculated. It turned out that: the simulated results and the measured results are in good agreement; due to the different medial and lateral affected by radiation, isotherms showed sloped distributions in the process of the withdrawal; the temperature gradient of the measured positions in the coupons which are 10 mm, 50 mm, 100 mm, 150 mm far from the copper chill, are 8.0 Kmm^-1, 3.0 Kmm^-1, 2.5 Kmm^-1, 1.8 Kmm^-1 respectively.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 561-564
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.561
• Online since: January 2015
• Authors: Zhi Hong Jia, Liang Xu, Ran Tao, Ming Zhe Ma, Dao Cun Xie, Yu Tao Zhao
• Keywords: CMSX-6, Simulation, Temperature Field, Temperature Gradient

References

[1] LIU S Z, TANG D Z: Numerical simulation of directional solidification process of single crystal superalloys, Materials Engineering (1999), (7), 40-42.

[2] XIE H J, LI J R: Numerical simulation of directional solidification process on the vane of single crystal superalloy DD6, Materials Engineering (2011), (11), 58-61.

[3] Yu K O, Oti J A, Robinson M, etal: Solidification modeling of complex-shaped single crystal turbine airfoils, Superalloys (1992), Warrendale, PA, TMS (1992), 135-144.

DOI: 10.7449/1992/superalloys_1992_135_144

[4] Yu K O, Oti J A, Robinson M, etal: Solidification modeling of single crystal investment casting, Transaction of American foundrymen's Society (1990), 98 (53), 417-428.

[5] LI J R, LIU S Z, YUAN H L, et al: Solidification simulation of investment castings of single crystal hollow turbine blade, Journal of Materials Science and Technology (2003), 19(6), 532-534.

[6] JIN H P, LI J R, PAN D: Application of inverse method to estimation of boundary Conditions during investing casting simulation, Acta Metallurgica Sinica(English Letters) (2009), 22(6), 429-434.

DOI: 10.1016/s1006-7191(08)60119-2

[7] JIN H P, LI J R, LIU S Z, et al: Study of hest transfer coefficient used in the unidirectional solidification simulation based on orthogonal design, Rare Metal Materials and Engineering (2010), 39(5), 767-770.

DOI: 10.1016/s1875-5372(10)60098-7

[8] FU H Z, etal: Directional solidification and Processing of Advanced Materials, Beijing, Science (2008).

[9] J.R. Welty, etal: Fundamentals of Momentum, Heat, and Mass Transfer, Danver, MA, Wiley, (1984).

[10] BU B, LI Y Y: Determination of interfacial heat transfer coefficient during single crystal blade casting process, Foundry (2009), 58(3), 225-228.

[11] Griffiths W D: A model of the interfacial heat-transfer coefficient during unidirectional solidification of an aluminum alloy, Metall. Mater. Trans. (2000), 31B, 285.

DOI: 10.1007/s11663-000-0047-6

[12] Fu Hengzhi, Guo Gingshan: Directional Solidification and Processing of Advanced Materials, Beijing, Science (2008).