Journal of Material Sciences & Engineering

Segurado E

Publications

• Research Article
  Fatigue Resistance Study of Quenched and Tempered High-Strength Steel Submitted to Low Intensity Shot Peening Treatments with Different Types of Shots
  Author(s): Segurado E, Belzunce FJ and Fernández Pariente ISegurado E, Belzunce FJ and Fernández Pariente I
  
  The aim of this research is to study the fatigue life enhancement produced in quenched and tempered AISI4340 steel with a tensile strength of 2000 MPa after being submitted to shot peening surface treatments. These treatments generate compressive residual stress fields in a superficial layer of the material at the same time as inducing some kind of damage on the surface. Different kind of projectiles were chosen to perform the treatment (ceramic and steel shots), studying the way these affected the fatigue life of the specimens. The surface topography of the samples was analysed using a roughness tester and by means of scanning electron microscopy (SEM). The compressive residual stress profile induced by these treatments was measured using X-ray diffraction (XRD) plus electro-polishing. The fatigue behaviour of the treated samples was subsequently studied by means of 4-point.. Read More»
  DOI: 10.4172/2169-0022.1000401

  Abstract PDF