Electronics Incorporated - The Shot Peener - Shot Peening Library
Title: Residual Stress Relaxation and Fatigue Strength of AISI 4140 under Torsional Loading after Conventional Shot Peening, Stress
Author: Menig, Schulze, Vohringer
Source: Conf Proc: ICSP-8 Sept. 16-20, 2002 Garmisch-Partenkirchen, Germany
Publication year 2002
Document number: 2002040
Number of pages: 6
Abstract:
Authors
Rainer Menig, Volker Schulze and Otmar Vohringer
Institut fur Werkstoffkunde I, Universitat Karlsruhe (TH), Karlsruhe, Germany
Abstract
Cylindrical rods of 450 C quenched and tempered AISI 4140 were conventionally shot peened, stress peened and warm peened while rotating in the peening device. Warm peening
at Tpeen=310 C was conducted using a modified air blast shot peening machine with an electric air flow heater system. To perform stress peening using a torsional pre-stress,
a device was conceived which allowed rotating pre-stressed samples without having material of the pre-loading gadget between the shot and the samples. Thus, same peening
conditions for all peening procedures were ensured. The residual stress distributions present after the different peening procedures were evaluated and compared with results
obtained after peening of flat material of the same steel. The differently peened samples were subjected to torsional pulsating stresses (R=0) at different loadings to
investigate their residual stress relaxation behavior. Additionally, the pulsating torsional strengths for the differently peened samples were determined.
Download full text pdf file
www.shotpeener.com
This page last revised: 04/24/2008