Paper Title:
Improvement of Fatigue Strength of Maraging Steel by Shot Peening
  Abstract

Rotating bending fatigue tests up to 108 cycles were carried out to investigate the effects of shot peening on the fatigue strength and the fracture mechanism in an 18 % Ni maraging steel by using shot particles of various sizes or hardness. Fatigue strength was increased markedly by shot peening in the wide region of fatigue life. The S-N curves showed duplex S-N properties because of the transition of fracture origin from the specimen surface in the short life region to the subsurface in the long life one. Double shot peening by using super-hard fine particles was effective to improve the fatigue strength for surface fracture, though the fatigue strength for an internal fracture was hardly influenced. These results were discussed from the points of view of effects of surface roughness, residual stress and work hardening on the fatigue strength.

  Info
Periodical
Key Engineering Materials (Volumes 348-349)
Edited by
J. Alfaiate, M.H. Aliabadi, M. Guagliano and L. Susmel
Pages
537-540
DOI
10.4028/www.scientific.net/KEM.348-349.537
Citation
N. Kawagoishi, T. Nagano, M. Moriyama, E. Kondo, "Improvement of Fatigue Strength of Maraging Steel by Shot Peening", Key Engineering Materials, Vols. 348-349, pp. 537-540, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wun Chet Davy Cheong, W.Z. Zhuang, Liang Chi Zhang
871
Authors: Imke Weich, Thomas Ummenhofer
Abstract:Research has been initiated on the effects of high frequency peening methods on the fatigue strength. These methods combine an improvement...
429
Authors: Kazuaki Shiozawa, Lian Tao Lu
Abstract:Gigacycle fatigue behavior in high-strength steels tested under rotary bending fatigue was summarized in this paper. Characteristic of the...
65
Authors: Shabnam Hosseini, Mohammad Bagher Limooei
Chapter 1: Metal Materials
Abstract:In this research, fatigue behaviour of Ti-6Al-4V alloy was investigated for smooth and notched specimens with stress concentration...
7
Authors: Yan Zeng Wu, Qing Yuan Wang, Qiao Lin Ouyang
Chapter 7: Building Materials
Abstract:Using the ultrasonic fatigue test method, the influence of subjection to plasma nitriding surface modifications on the ultra-high cycle...
1731