Improvement of Fatigue Properties in a Cast Aluminum Alloy by Roller Burnishing and Friction Stir Processing

Yuki Nakamura; Masaki Nakajima; Hiroaki Masuda; Toshifumi Kakiuchi; Yoshihiko Uematsu

doi:10.4028/www.scientific.net/AMR.891-892.662

Paper Titles

Comparison of Tensile and Compressive Creep-Fatigue Damage Behavior of Cellular Composites
p.633

Thermal Cycling Fatigue of Thermal Barrier Coatings - Rig and Experiment Design
p.641

Effect of Ultrasonic Shot Peening on the Fatigue Strength of Stainless Cast Steel ASTM CA6NM for Hydraulic Turbine Runner
p.649

Development of Low Temperature Nitriding Process and its Effects on the 4-Points Bending Fatigue Properties of Commercially Pure Titanium
p.656

Improvement of Fatigue Properties in a Cast Aluminum Alloy by Roller Burnishing and Friction Stir Processing
p.662

Influence of Shot Peening on the Fatigue Strength of Custom 465 Stainless Steel for Aeronautic Application
p.668

Nitriding Effect on Corrosion Fatigue Strength of Low Alloy Steel in 1% HCl Aqueous Solution
p.674

Hole Cold Expansion the Fatigue Mitigation Game Changer of the Past 50 Years
p.679

Fractographic Study on the Use of Rainflow Counting for Small and Long Cracks in AA7050
p.687

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 891-892Improvement of Fatigue Properties in a Cast...

Improvement of Fatigue Properties in a Cast Aluminum Alloy by Roller Burnishing and Friction Stir Processing

Abstract:

Roller burnishing (RB) and friction stir processing (FSP) were applied to a cast aluminum alloy, AC4CH-T6 (equivalent to A356-T6), to improve the fatigue properties. In roller burnished specimens, Vickers hardness was increased until the depth of 60μm compared with that of the as-cast specimens, resulting in work-hardening by RB. The compressive residual stress on the surface of the roller burnished specimens was also increased from 35MPa to 132MPa. In order to investigate the effect of RB on the fatigue properties, rotary bending fatigue tests have been performed using the roller burnished and the as-cast specimens. The roller burnished specimens exhibited higher fatigue strength than the untreated specimens. It is due to the increase in hardness and compressive residual stress by RB. In addition, plane bending fatigue tests have been performed using the friction stir processed and untreated specimens. Fatigue strengths of the friction stir processed specimens were highly improved compared with untreated specimens as the results of the elimination of casting defects by FSP. However, the crack growth rates of the friction stir processed specimens were faster than those of untreated specimens. It is due to the softening of the material by heat input during the FSP.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 891-892)

Pages:

662-667

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.891-892.662

Citation:

Cite this paper

Online since:

March 2014

Authors:

Yuki Nakamura*, Masaki Nakajima, Hiroaki Masuda, Toshifumi Kakiuchi, Yoshihiko Uematsu

Keywords:

Cast Aluminum Alloy, Crack Propagation, Friction Stir Processing (FSP), Roller Burnishing

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] K. Shiozawa, S. Nishino, Y. Tohda, S.M. Sun, Small fatigue crack growth behaviour and fatigue strength of squeeze-cast aluminium alloys, AC8A-T6 and AC4C-T6, Transactions of the Japan Society of Mechanical Engineers, Series A, 60 (1994).

DOI: 10.1299/kikaia.60.663

Google Scholar

[2] H. Ikeda, T. Toriyama, Y. Murakami, Quantitative evaluation of effects of inhomogeneity phases on fatigue strength of Al-Si New Eutectic Alloys, Transactions of the Japan Society of Mechanical Engineers, Series A, 57 (1991).

DOI: 10.1299/kikaia.57.1320

Google Scholar

[3] K. Masaki, Y. Ochi, T. Matsumura, Y. Sano, Effect of laser peening treatment on high cycle fatigue properties of degassing- processed cast aluminium alloy, Materials Science and Engineering A, 468-470 (2007) 171-175, (2007).

DOI: 10.1016/j.msea.2006.09.126

Google Scholar

[4] X. Zhu, A. Shyam, J.W. Jones, H. Mayer, J.V. Lasecki, J.E. Allison, Effects of microstructure and temperature on fatigue behaviour of E319-T7 cast aluminium alloy in very long life cycles, International Journal of Fatigue, 28 (2006) 1566-1571.

DOI: 10.1016/j.ijfatigue.2005.04.016

Google Scholar

[5] Y. Nakamura, T. Sakai, H. Hirano, K.S. Ravi Chandran, Effect of alumite surface treatments on long-life fatigue behavior of a cast aluminum in rotating bending, International Journal of Fagigue, 32 (2010) 621-626.

DOI: 10.1016/j.ijfatigue.2009.10.002

Google Scholar

[6] Y. Uematsu, K. Tokaji, K. Fujiwara, Y. Tozaki and H. Shibata, Fatigue behavior of cast magnesium alloy AZ91 microstructurally modified by friction stir processing, Fatigue Fract. Engng. Mater. Struct., 32 (2009) 541-551.

DOI: 10.1111/j.1460-2695.2009.01358.x

Google Scholar