Influence of Grain Size and Lamellar Spacing on the Fatigue Crack Propagation in γ-TiAl Alloy

Abstract:

Study of grain size and lamellar spacing on fatigue crack propagation resistance in TiAl alloy has been done. The effects have been analyzed specifically. Meanwhile, the influence has been verified with some fatigue crack propagation experimental results and Paris formula. The experimental results confirmed that the grain size and lamellar spacing have significant effect on fatigue crack growth resistance. According to the Paris formula, the specific values of the constants in the formula were calculated.

• Periodical: Advanced Materials Research (Volumes 941-944)
• Pages: 1513-1516
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.941-944.1513
• Online since: June 2014
• Authors: Yan Rui Zuo, Zhi Yuan Rui, Rui Cheng Feng*, Chang Feng Yan, Hai Yan Li
• Keywords: Fatigue Crack Propagation, Grain Size, Lamellar Spacing, γ-TiAl Alloy

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