Effect of Double Shot Peening on Room-Temperature Notched Fatigue Property of TC4 Titanium Alloy

Xin Wang; Si Qing Li; Qing Yang; Bai Qiu Teng; Zhen Xi Li; Zhen Wei Meng; Zhen Ye Zhao

doi:10.4028/www.scientific.net/MSF.817.90

Paper Titles

Effect of Squeeze Casting and Solution Treatment on the Microstructure and Properties of ZA27 Worm Wheel
p.63

Oxidation-Induced Cu Coating on Steel Surface
p.71

Superhydrophobic Surface Prepared by Organic-Inorganic Hybrid Material on Plasma Spraying Al₂O₃+13wt. %TiO₂ Ceramic Coating
p.76

Effect of Fe Content on Microstructures and Mechanical Properties of the Heat-Treated Squeeze Cast Al-5.0Cu-0.6Mn Alloy
p.82

Effect of Double Shot Peening on Room-Temperature Notched Fatigue Property of TC4 Titanium Alloy
p.90

Research and Preparation of Silver Free Amorphous Active Brazing Alloy
p.96

Effect of Pulse Current on the Microstructure of Tungsten Electrode in Tensile Process
p.104

Effect of Alloying Elements and Heating Parameters on the Hardness of Quenched and Tempered Steel 42CrMo after Induction Hardening
p.109

Network Carbide Inheritance during Heat Treatment Process of Large Shield Machine Bearing Steel GCr15SiMn
p.115

HomeMaterials Science ForumMaterials Science Forum Vol. 817Effect of Double Shot Peening on Room-Temperature...

Effect of Double Shot Peening on Room-Temperature Notched Fatigue Property of TC4 Titanium Alloy

Abstract:

Single shot peening (SSP) with cast-iron shot and double shot peening (DSP) with cast-iron shot and ceramic shot were applied to investigate the relationship between surface integrity status and the fatigue property of titanium alloy TC4 on the notched specimens (stress concentration coefficient Kt=1.7). Surface roughness, residual stress profile and fatigue curve of the notched specimens were tested using scanning profilometer, XRD residual stress tester and rotating-bending fatigue testing machine, respectively. The results showed that surface roughness decreased 18.3% from Ra 1.09 μm post SSP to Ra 0.89 μm after DSP. Moreover, the position of the maximum value of residual stress migrated out close to the surface and the value of surface residual stress raised 12.6% to-800MPa from SSP. Additionally, the fatigue limit of the notched specimens pose SSP increased 64.7% to 467MPa from 283 MPa of AM, furthermore, edged up by 8% from 432MPa on unpeened smooth samples. It may be concluded that the double shot peening on titanium alloy has, therefore, eliminated the weakness of fatigue property caused by stress concentration.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 817)

Pages:

90-95

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.817.90

Citation:

Cite this paper

Online since:

April 2015

Authors:

Xin Wang*, Si Qing Li, Qing Yang, Bai Qiu Teng, Zhen Xi Li, Zhen Wei Meng, Zhen Ye Zhao

Keywords:

Double Shot Peening, Notched Fatigue, Stress Concentration, Titanium Alloy

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] Peng Y, Zeng F, Wang J, et al. Development, application and feature of Titanium alloys in forergn aviation industry[J]. Material engineering. 1997(10): 3-6.

Google Scholar

[2] Wang W. Material and manufacture of aeroengine with thrust weight ratio of 10[J]. Aeronautical Manufacturing Technology. 1996, 4: 39.

Google Scholar

[3] Cai J, Li Z, Ma J, et al. Research and development of 600℃ high temperature titanium alloys for aeroengine[J]. Materials review. 2005, 19(1): 50-53.

Google Scholar

[4] Li H, He F, Ma Y, et al. Initial fatigue quality of faster holes of TC4 titanium alloy with two microstruetures[J]. Journal of aeronautical material. 2013, 33(2): 81-86.

Google Scholar

[5] Song Y, Gao Y, Lu F, et al. Evolution of Microstructure and Properties of Surface Layer after Shot Peening of TC21 Titanium Alloy[J]. Journal of aeronautical materials. 2010, 30(2): 40-44.

Google Scholar

[6] Soady K A, Mellor B G, West G D, et al. Evaluating surface deformation and near surface strain hardening resulting from shot peening a tempered martensitic steel and application to low cycle fatigue[J]. International Journal of Fatigue. 2013, 54: 106-117.

DOI: 10.1016/j.ijfatigue.2013.03.019

Google Scholar

[7] Lee H, Mall S, Allen W Y. Fretting fatigue behavior of shot-peened Ti–6Al–4V under seawater environment[J]. Materials Science and Engineering A. 2006, 420: 72-78.

DOI: 10.1016/j.msea.2006.01.031

Google Scholar

[8] Material B I O A. Shot peening of aircraft parts[S]. (2011).

Google Scholar

[9] Wang X, Wang Q, Song Y, et al. Effect of Ceramic Shot-Peening on Fatigue Behavior of Aluminum Alloy[J]. Materials protection. 2011, 44(9): 9-11.

Google Scholar

[10] Wang X, Li Z, Lu F, et al. Effect of shot peening on grinding surface integrity of TC4 titanium alloy[J]. Transactions of materials and heat treatment. 2012, 33(supplement)(6): 107-109.

Google Scholar