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High Temperature Structural MaterialsNo Access

THE EFFECT OF HIGH TEMPERATURE CORROSION ON MECHANICAL BEHAVIOR OF A GAMMA-TiAl ALLOY

Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, No.37 Xueyuan Road, Beijing 100191, China

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Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, No.37 Xueyuan Road, Beijing 100191, China

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Key Laboratory of Aerospace Materials and Performance (Ministry of Education), School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, No.37 Xueyuan Road, Beijing 100191, China

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https://doi.org/10.1142/S0217979210065945Cited by:1 (Source: Crossref)

Abstract

The mechanical properties of Ti-48Al-2Cr-2Nb alloy were discussed after the high temperature corrosion tests carried out with salt mixture of 75wt. % Na₂SO₄ and 25wt. % NaCl at 800°C. The microstructure of the alloy after corrosion was observed by SEM and the fracture behavior of the corroded and uncorroded alloys was investigated by means of the three-point bending tests. It has been shown that the corrosion path was mainly along the lamellar structure and rough surface with a large number of corrosion pits formed during the high temperature corrosion. The experimental results also indicated that the bearing capacity of bending fracture descended evidently due to the molten salt corrosion at high temperature, which only had remarkable effects on the surface state of the alloy. The microcracks inside the alloy always propagated along the phase interfaces and grain boundaries while the corrosion pits on salt-deposited surface became the main crack initiation location in corroded alloy. The stress concentration caused by corrosion was considered as the essential reason of the property reduction, which decreased the energy barrier of crack nucleation and shortened the incubation period.

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References

Alain Lasalmonie, Intermetallics 14, 1123 (2006), DOI: 10.1016/j.intermet.2006.01.064. Web of Science, Google Scholar
D. M. Dimiduk, Internetallics 6, 613 (1998), DOI: 10.1016/S0966-9795(98)00038-7. Web of Science, Google Scholar
Heng Qiang Ye, Material Science and Engineering A 263, 289 (1999), DOI: 10.1016/S0921-5093(98)01159-9. Web of Science, Google Scholar
H. L. Du, Corrosion Science 49, 2406 (2007), DOI: 10.1016/j.corsci.2006.10.037. Web of Science, Google Scholar
A. Zeller, Intermetallics 10, 59 (2002), DOI: 10.1016/S0966-9795(01)00104-2. Web of Science, Google Scholar
Kai Zhang, Material Letters 57, 834 (2002), DOI: 10.1016/S0167-577X(02)00882-0. Web of Science, Google Scholar
Kai Zhang, Intermetallics 12, 539 (2004), DOI: 10.1016/j.intermet.2004.01.007. Web of Science, Google Scholar
Z. Yao, Material Science and Engineering A 192/193, 994 (1995), DOI: 10.1016/0921-5093(95)03345-9. Web of Science, Google Scholar
Zhenyu Liu, Intermetallics 12, 459 (2004), DOI: 10.1016/j.intermet.2003.10.008. Web of Science, Google Scholar
Takeshi Izumi, Intermetallics 10, 353 (2002), DOI: 10.1016/S0966-9795(02)00005-5. Web of Science, Google Scholar
C. Delgado-Alvarado, Corrosion Science 49, 3732 (2007). Web of Science, Google Scholar
Q. Gao, Material Letters 59, 2052 (2005), DOI: 10.1016/j.matlet.2005.02.015. Web of Science, Google Scholar
Takumi Haruna, Material Science and Engineering A 329-331, 745 (2002), DOI: 10.1016/S0921-5093(01)01654-9. Web of Science, Google Scholar
W. Sha, Journal of Alloys and Compounds 335, L16 (2002), DOI: 10.1016/S0925-8388(01)01842-4. Web of Science, Google Scholar
R. L. Howard, Acta Mater. 44, 3157 (1996), DOI: 10.1016/1359-6454(95)00419-X. Web of Science, ADS, Google Scholar
M.-P. Bacos, Intermetallics 14, 102 (2006), DOI: 10.1016/j.intermet.2005.04.015. Web of Science, Google Scholar
A. Zeller, Intermetallics 10, 33 (2002), DOI: 10.1016/S0966-9795(01)00105-4. Web of Science, Google Scholar
Haijun Yao, Journal of Lanzhou University of Technology 31, 1 (2005). Google Scholar
Rui Cao, Chinese Journal of Rare Metals 30, 5 (2006). Web of Science, Google Scholar
Rui Cao, Rare Metal Materials and Engineering 37, 7 (2008). Web of Science, Google Scholar

Journal cover image

Vol. 24, No. 15n16

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History

Received 10 October 2008

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