Elevated-temperature sensitivity of �I437B alloy to cycle asymmetry and stress concentration in relation to surface work-hardening

1969 ◽  
Vol 1 (3) ◽  
pp. 306-309 ◽  
Author(s):  
B. F. Balashov ◽  
A. N. Petukhov
Keyword(s):  
Elevated Temperature ◽  
Stress Concentration ◽  
Temperature Sensitivity ◽  
Work Hardening ◽  
Cycle Asymmetry ◽  
Surface Work

Surface work-hardening of back-up rolls

Metallurgist ◽  
1982 ◽  
Vol 26 (1) ◽  
pp. 32-33
Author(s):  
A. Yu. Firkovich ◽  
A. M. Tsun ◽  
A. I. Dobronravov ◽  
V. A. Brovkin ◽  
O. N. Shcherbakov
Keyword(s):  
Work Hardening ◽  
Surface Work

Analysis of elevated temperature flow and work hardening behaviour of service-exposed 2.25Cr-1Mo steel using Voce equation

2004 ◽  
Vol 81 (3) ◽  
pp. 297-301 ◽  
Author(s):  
C. Girish Shastry ◽  
M.D. Mathew ◽  
K. Bhanu Sankara Rao ◽  
S.L. Mannan
Keyword(s):  
Elevated Temperature ◽  
Work Hardening ◽  
Voce Equation

Effectiveness of surface work-hardening as a means of increasing the fatigue and corrosion-fatigue strength of some stainless steels

1968 ◽  
Vol 2 (6) ◽  
pp. 468-470
Author(s):  
V. I. Pokhmurskii ◽  
A. V. Boltarovich ◽  
M. M. Shved ◽  
G. V. Karpenko
Keyword(s):  
Fatigue Strength ◽  
Corrosion Fatigue ◽  
Stainless Steels ◽  
Work Hardening ◽  
Corrosion Fatigue Strength ◽  
Surface Work

scholarly journals Surface work hardening of pure niobium induced by water polishing.

2000 ◽  
Vol 12 (1/2) ◽  
pp. 109-110
Author(s):  
Naotada HAGIWARA ◽  
Kazuya OGURI ◽  
Tsunenori SUZUKI ◽  
Haru-Hisa UCHIDA ◽  
Hiromasa YABE ◽  
...  
Keyword(s):  
Work Hardening ◽  
Pure Niobium ◽  
Surface Work

Fatigue Test for Two-Holes Diagonally-Placed Plate at Elevated Temperature

2012 ◽  
Author(s):  
Keisuke Kinoshita ◽  
Osamu Watanabe
Keyword(s):  
Elevated Temperature ◽  
Stress Concentration ◽  
Crack Initiation ◽  
Perforated Plate ◽  
Ccd Camera ◽  
Inelastic Strain ◽  
Local Strain ◽  
Stress Concentrations ◽  
Two Circular Holes ◽  
Circular Holes

The objective of the present study is to evaluate fatigue strength of a perforated plate at an elevated temperature of 550°C under displacement-controlled loading. Specimens having two circular holes have stress concentrations near the hole sides. The two holes in the specimen made of SUS304 stainless steel are placed at an angle of 30°, 60° and 90° measured from the loading direction. Stress concentration factors of these specimens, having the complicated stress pattern distribution, were estimated by the finite element method (FEM). Based on the stress concentration factor, the inelastic strain was estimated by the simplified equation of the Stress Redistribution Locus (SRL) method, and the estimated strain was compared to the experimental Best Fit Fatigue (BFF) curve. Crack initiation cycles were determined from graph showing the crack propagation process, which were measured by a CCD camera at a regular interval cycle. Crack initiation cycles were smaller than failure cycles of 75% load decreasing point. By using these inelastic local strain and crack initiation cycles, the experimented results were predicted well by the present complicated structures.

Fatigue Strength Evaluation of Perforated Plate at Elevated Temperature Using Stress Redistribution Locus Method

2007 ◽  
Author(s):  
Osamu Watanabe ◽  
Bopit Bubphachot ◽  
Nobuchika Kawasaki ◽  
Naoto Kasahara
Keyword(s):  
Elevated Temperature ◽  
Fatigue Strength ◽  
Stress Concentration ◽  
Crack Initiation ◽  
Perforated Plate ◽  
Local Strain ◽  
Stress Redistribution ◽  
Experimental Results ◽  
Locus Method ◽  
Crack Initiation Life

This study reports the experimental results carried out at the elevated temperature of 550°C on fatigue strength of the perforated plate. Stress Redistribution Locus (abbreviated as SRL hereafter) Method is applied to predict fatigue life for the specimens having stress concentration. The specimens made of SUS304 stainless steel have through holes with different number and different diameter, accordingly leading to the different stress concentration condition. The inelastic local strain is estimated by the SRL method or the other previous Neuber’s rule, and compared to the experimental results on the crack initiation life at the edge of the hole using the concentrated local strain obtained by these methods. The obtained result is that the SRL method is best used with the onset of failure or crack initiation.

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