An evaluation of shot peening, residual stress and stress relaxation on the fatigue life of AISI 4340 steel

被引：482
作者：
Torres, MAS
Voorwald, HJC
机构：
[1] State Univ Sao Paulo, Dept Mech, UNESP, FEG, BR-12516410 Guaratingueta, SP, Brazil
[2] State Univ Sao Paulo, Dept Mat & Technol, BR-12516410 Guaratingueta, SP, Brazil
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2002年 / 24卷 / 08期
关键词：
shot peening; residual stress; 4340; steel; fatigue;
D O I：
10.1016/S0142-1123(01)00205-5
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Shot peening is a method widely used to improve the fatigue strength of materials. through the creation of a compressive residual stress field (CRSF) in their surface layers. In the present research the gain in fatigue life of AISI 4340 steel, Used in landing gear. is evaluated under four Shot peening conditions. Rotating bending fatigue tests were conducted and the CRSF was measured by an X-ray tensometry prior and during fatigue tests. It was observed that relaxation of the CRSF occurred due to the fatigue process. In addition, the fractured fatigue specimens were investigated using a scanning electron microscope in order to obtain information about the crack initiation points. The evaluation of fatigue life, relaxation of CRSF and crack sources are discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：877 / 886
页数：10
相关论文
共 23 条
[1]  
[Anonymous], ADV SURFACE TREATMEN
[2]  
[Anonymous], ICRS 3
[3]  
DeLitizia AT, 1984, P ICP 2 CHIC, P237
[4]  
DIEPART CP, 1994, MATER SCI FORUM, V163-, P457, DOI 10.4028/www.scientific.net/MSF.163-165.457
[5]   EFFECT OF SHOT PEENING ON RESIDUAL-STRESS AND FATIGUE LIFE OF A SPRING STEEL [J].
FARRAHI, GH ;
LEBRUN, JL ;
COURATIN, D .
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1995, 18 (02) :211-220
[6]  
Fathallah R, 1998, MATER SCI TECH SER, V14, P631, DOI 10.1179/026708398790290596
[7]   Study of the residual stress state during plastic deformation under uniaxial tension in a 5.0Cr and 0.5Mo steel [J].
Gurova, T ;
Teodosio, JR ;
Rebello, JMA ;
Monin, V .
SCRIPTA MATERIALIA, 1997, 36 (09) :1031-1035
[8]   Residual stress relaxation in an AISI 4140 steel due to quasistatic and cyclic loading at higher temperatures [J].
Holzapfel, H ;
Schulze, V ;
Vohringer, O ;
Macherauch, E .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 248 (1-2) :9-18
[9]   Mechanism of creation of compressive residual stress by shot peening [J].
Kobayashi, M ;
Matsui, T ;
Murakami, Y .
INTERNATIONAL JOURNAL OF FATIGUE, 1998, 20 (05) :351-357
[10]  
Kodama S., 1971, Int. Conf. Mech. Behav. Mater, V2, P111
123