Journal ArticleDOI
Enhancement of fatigue and corrosion properties of pure Ti by sandblasting
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TLDR
The peak subsurface compressive residual stress produced by sandblasting was measured by XRD to be around 480 MPa as mentioned in this paper, and three distinct regions were observed in the sandblasted samples, namely severely deformed surface layer, the region deformed mainly by twinning, and the substrate.Abstract:
Commercially pure titanium was sandblasted with SiO2 particles of 200–300 μm in diameter. It was found that the sandblasted samples exhibited an increase in fatigue strength by 11% over that of the untreated samples. The peak subsurface compressive residual stress produced by sandblasting was measured by XRD to be around 480 MPa. Three distinct regions were observed in the sandblasted samples, namely the severely deformed surface layer, the region deformed mainly by twinning, and the substrate. After recovery treatment below 300 °C, the surface layer of the sandblasted samples was transformed into a nano-crystalline structure, and its corrosion resistance was significantly improved.read more
Citations
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Journal ArticleDOI
Review of shot peening processes to obtain nanocrystalline surfaces in metal alloys
S. Bagheri,Mario Guagliano +1 more
TL;DR: In this article, the importance of shot peening process to obtain nanocrystal surface is presented with an inclusive clarification of actual state of the art, and the available microstructural characteristics of thin layers obtained with different processes are depicted.
Journal ArticleDOI
Effect of structure evolution induced by ultrasonic peening on the corrosion behavior of AISI-321 stainless steel
TL;DR: In this article, a nanocrystalline surface layer was produced on an AISI-321 stainless steel by severe plastic deformation via ultrasonic peening (UP), which was characterized by means of X-ray diffraction analysis and transmission electron microscopy (TEM).
Journal ArticleDOI
Fatigue behavior of a low-alloy steel with nanostructured surface obtained by severe shot peening
Sara Bagherifard,Mario Guagliano +1 more
TL;DR: In this article, severe shot peening aimed to generate a nanograined layer over specimens' surface has been applied by means of standard air blast equipment but using peening parameters essentially different from typical ones.
Journal ArticleDOI
Titanium in biomedical applications—properties and fabrication: a review
TL;DR: In this article, the advantages and disadvantages of various Ti manufacturing processes for biomedical applications such as casting, powder metallurgy, cold and hot working, machining, laser engineering net shaping (LEN), superplastic forming, forging and ring rolling are analyzed.
Journal ArticleDOI
A numerical model of severe shot peening (SSP) to predict the generation of a nanostructured surface layer of material
TL;DR: In this paper, a finite element model of severe shot peening (SSP) is developed with the aim of predicting the treatment conditions that lead to surface nanocrystallization, and the results are discussed and interpreted in terms of induced residual stresses and surface work hardening.
References
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Book
X-ray diffraction procedures for polycrystalline and amorphous materials
Harold P. Klug,Leroy Alexander +1 more
MonographDOI
Mechanical Behavior of Materials
TL;DR: A balanced mechanics-materials approach and coverage of the latest developments in biomaterials and electronic materials, the new edition of this popular text is the most thorough and modern book available for upper-level undergraduate courses on the mechanical behavior of materials as discussed by the authors.
Book
Thin Film Materials: Stress, Defect Formation and Surface Evolution
L. B. Freund,Subra Suresh +1 more
TL;DR: The role of stress in mass transport is discussed in this article, where the authors consider anisotropic and patterned films, buckling, bulging, peeling and fracture.
Journal ArticleDOI
On the influence of mechanical surface treatments—deep rolling and laser shock peening—on the fatigue behavior of Ti–6Al–4V at ambient and elevated temperatures
TL;DR: In this paper, the effect of DR on the low-cycle fatigue (LCF) and high cycle fatigue (HCF) behavior of a Ti-6Al-4V alloy is examined, with particular emphasis on the thermal and mechanical stability of the residual stress states and the near-surface microstructures.
Journal ArticleDOI
Grain size effects on the fatigue response of nanocrystalline metals
TL;DR: In this article, the fatigue response of electrodeposited nanocrystalline pure Ni and a cryomilled ultra-fine-crystalline Al-Mg alloy was studied.