A comparison of the room-temperature behaviour of AISI 304LN stainless steel and Nimonic 90 under strain cycling

1995 ◽  
Vol 17 (4) ◽  
pp. 271-277 ◽  
Author(s):  
S GANESHSUNDARARAMAN
Keyword(s):  
Stainless Steel ◽  
Room Temperature ◽  
Temperature Behaviour ◽  
304Ln Stainless Steel ◽  
Strain Cycling

The use of a bree simulation to investigate strain accumulation in 316 stainless steel at temperatures between room temperature and 500°c

1989 ◽  
Vol 24 (2) ◽  
pp. 95-102 ◽  
Author(s):  
D J Brookfield ◽  
D N Moreton
Keyword(s):  
Stainless Steel ◽  
Transition Temperature ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Cyclic Change ◽  
Strain Accumulation ◽  
Temperature Behaviour ◽  
Design Rules ◽  
Axial Tension ◽  
Applied Stresses

This paper details tests undertaken to determine the 1 per cent strain accumulation boundary in stainless steel type 316 strip subjected to constant axial tension and a cyclic change of curvature. Boundaries are obtained for temperatures between 300 and 500°C. These are compared with two design rules, both of which are shown to be conservative. Additionally, the temperature at which the transition from the characteristic room temperature behaviour of continued ratchetting to the ‘shakedown’ observed at elevated temperatures is investigated. Results obtained indicate that this transition temperature is influenced by the magnitude of the applied stresses.

Strain localization in beams under cyclic plastic straining at room and elevated temperature

1971 ◽  
Vol 6 (2) ◽  
pp. 108-120 ◽  
Author(s):  
G P Horwood ◽  
D J White
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Mild Steel ◽  
Strain Localization ◽  
Room Temperature ◽  
Cyclic Stress ◽  
Elastic Analysis ◽  
Stress Strain Relation ◽  
Localization Conditions ◽  
Strain Cycling

Deflection-controlled tests have been conducted on beams subjected to uniform bending and two forms of non-uniform bending in which strain localization occurs. The materials tested were mild steel to B.S. 1501–161 Grade 28A at room temperature and 350°C and stainless steel En 58J at room temperature and 650°C. For materials which show a settled cyclic stress-strain relation (the cyclic semi-range of strain and the corresponding cyclic semi-range of stress) estimates may be made of life in deflection cycling for beams under strain-localization conditions if the strains are calculated from the cyclic relations and the corresponding endurances are obtained from strain-cycling tests in uniform bending. On the basis of the present and previous results, it is believed that this procedure will give predictions which are on the side of safety. In the present work the predictions were often unduly safe. For materials which strain-harden severely, an elastic analysis may sometimes be adequate for an assessment of the strains involved. However, with such an analysis the predicted endurances may be unsafe and should be reduced by a suitable factor to allow for uncertainties.

Beneficial Effects Induced by High Temperature Cycling in Aged Duplex Stainless Steel

2007 ◽  
Vol 345-346 ◽  
pp. 339-342 ◽  
Author(s):  
A.F. Armas ◽  
Suzanne Degallaix ◽  
Gérard Degallaix ◽  
S. Hereñú ◽  
C. Marinelli ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Fatigue Life ◽  
Stainless Steels ◽  
Room Temperature ◽  
Temperature Cycling ◽  
Cyclic Behavior ◽  
Beneficial Effects ◽  
Composition Fluctuations ◽  
Strain Cycling

The cyclic behavior of type DIN 1.4460 duplex stainless steels in as-received and aged conditions was investigated at room temperature and at 500°C. At room temperature, the aged samples showed embrittlement effects such as loss of toughness and reduction of fatigue life. At 500°C, beneficial effects of the synergy between temperature and strain cycling were observed. It is proposed that at high temperature in the ferrite the strain cycling can decompose the chemical composition fluctuations, promoting a demodulation of the spinodal decomposition formed by aging.

Low Cycle Tension-Tension Fatigue Properties of 316L Stainless Steel Thin Sheets

2011 ◽  
Vol 138-139 ◽  
pp. 832-835
Author(s):  
Yong Jie Liu ◽  
Qing Yuan Wang ◽  
Ren Hui Tian ◽  
Xiao Zhao
Keyword(s):  
Stainless Steel ◽  
Room Temperature ◽  
316L Stainless Steel ◽  
Fatigue Testing ◽  
Fatigue Properties ◽  
Loading Frequency ◽  
Thin Sheets ◽  
Effect Factor ◽  
Mechanical Fatigue ◽  
Tensile Fatigue

In this paper, tensile fatigue properties of 316L stainless steel thin sheets with a thickness of 0.1 mm are studied. The tests are implemented by using micro mechanical fatigue testing sysytem (MMT-250N) at room temperature under tension-tension cyclic loading. The S-N curve of the thin sheets descends continuously at low cycle region. Cyclic σ-N curve and ε-N curve are obtained according to the classical macroscopical fatigue theory. The results agree well with the experimental fatigue data, showing that the traditional fatigue research methods are also suitable for description of MEMS fatigue in a certain extent. The effect factor of frequency was considered in this study and the results show that the fatiuge life and the fatigue strength are increased as loading frequency increasing.

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