Fatigue Properties and Fracture Characteristics of the Aluminum Alloys for High-Speed Train Carbody

Fan Qiu; Qiang Li

doi:10.4028/www.scientific.net/AMR.1095.437

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1095Fatigue Properties and Fracture Characteristics of...

Fatigue Properties and Fracture Characteristics of the Aluminum Alloys for High-Speed Train Carbody

Abstract:

The fatigue tests on two types of domestic aluminum alloys were conducted and the P-S-N curves of both aluminum alloys were obtained. The microscopic characteristics at the fatigue fracture surface were observed with scanning electron microscopy. The results show that the tensile strength of A7 is 376MPa, while the tensile strength of A6 is 311MPa. The fatigue strength of A7 is 75MPa at 107 circles, and it is just a little higher than that of A6, which is 71.57MPa. The fatigue cracks initiated from or near the surface of the specimen. The fatigue fracture can be divided into three parts, namely, the initiation zone, the propagation zone and the sudden fracture zone. Typical characteristics could be observed on fracture surface.A6 has better plasticity than A7.

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Periodical:

Advanced Materials Research (Volume 1095)

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437-441

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1095.437

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Online since:

March 2015

Authors:

Fan Qiu*, Qiang Li

Keywords:

Aluminium Alloy, Fatigue, Fracture, P-S-N Curve

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References

[1] Sun De-qin. Aluminum Alloy Structure Material and Progress [J]. Advanced Materials Industry : 2011, 8: 60-63 In Chinese.

Google Scholar

[2] WU Si, WANG Xu, ZHOU Ji-xue, et al. Research Progress on Fatigue Properties of Aluminum Alloy [J]. Metal World: 2013, 4: 64-67 In Chinese.

Google Scholar

[3] Singh R K, Sharma C, Dwivedi D K, et al. The microstructure and mechanical properties of friction stir welded Al-Zn-Mg alloy in as welded and heat treated conditions [J]. Materials and Design, 2011, 32(2): 682-687.

DOI: 10.1016/j.matdes.2010.08.001

Google Scholar

[4] Suraratchai M, Limido J, Mabru C, et al. Modeling the influence of machined surface roughness on the fatigue life of aluminum alloy [J]. International Journal of Fatigue, 2008, 30(12): 2119-2126.

DOI: 10.1016/j.ijfatigue.2008.06.003

Google Scholar

[5] Payne J, Welsh G. Observations of fatigue crack initiation in 7075-T651 [J]. International Journal of Fatigue, 2010, 32: 247.

DOI: 10.1016/j.ijfatigue.2009.06.003

Google Scholar

[6] DING Bo, YANG Shang-lei, BAI Jian-ying, et al. Fatigue Fracture Characteristics of High Strength Aluminum Alloy for High -Speed Train [J]. Journal of Shanghai University of Engineering Science, 2014, 28(3): 1-5. In Chinese.

Google Scholar

[7] SUN Xian-liang, Tian Ai-qin, Chen Wen-bin, et al. Investigation on fatigue damage of the Al5Zn2Mg high strength Aluminum Alloy. Advanced Materials Research Vol. 721 (2013) pp.12-15.

DOI: 10.4028/www.scientific.net/amr.721.12

Google Scholar

[8] ZHAO Shao-bian, WANG Zhong-bao. Fatigue Design[M]. Beijing: China Machine Press , 1995. In Chinese.

Google Scholar