scholarly journals Low-cycle and High-cycle Fatigue Properties of Austenitic Stainless Steel at Room and Liquid Nitrogen Temperature

2018 ◽  
Author(s):  
F. P. Yang
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Liquid Nitrogen ◽  
High Cycle Fatigue ◽  
Liquid Nitrogen Temperature ◽  
Fatigue Properties ◽  
Cycle Fatigue

scholarly journals High Cycle Fatigue Properties of Austenitic Stainless Steel Welds at Cryogenic Temperatures

1998 ◽  
Vol 84 (12) ◽  
pp. 888-895
Author(s):  
Tetsumi YURI ◽  
Toshio OGATA ◽  
Masahiro SAITOU ◽  
Yoshiaki HIRAYAMA
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
High Cycle Fatigue ◽  
Fatigue Properties ◽  
Cryogenic Temperatures ◽  
Cycle Fatigue ◽  
Steel Welds

scholarly journals Influence of structure sensitising of the AlSi 316Ti austenitic stainless steel on the ultra-high cycle fatigue properties

2018 ◽  
Vol 157 ◽  
pp. 05011 ◽  
Author(s):  
Michal Jambor ◽  
František Nový ◽  
Otakar Bokůvka ◽  
Libor Trško ◽  
Monika Oravcová
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Structural Changes ◽  
High Cycle Fatigue ◽  
Elevated Temperatures ◽  
Fatigue Testing ◽  
Engineering Application ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Ultra High Cycle Fatigue

Austenitic stainless steels are the wide-spread materials, used mainly in the power industry. In that kind of engineering application, structural parts of rotating elements reach during their lifetime very high numbers of loading cycles, exceeding 107 numbers of cycles. With regard to this fact, the data of ultra-high cycle fatigue properties are needed to be used in the qualified design. Increasing demands on the efficiency cause the increase of the operating temperature, and exposition of these materials to the elevated temperatures can cause some important structural changes, which result in the sensitising of the structure. In this study authors present their own experimental results about fatigue properties of AISI 316Ti austenitic stainless steel after sensitising, in the ultra-high cycle region (Nf = 106 ~ Nf = 3×109 cycles). Fatigue tests were carried out using ultrasonic fatigue testing device with frequency f = 20 kHz at the coefficient of cycle asymmetry R = -1, and temperature T = 20±5°C. In the ultra-high cycle region was observed the continuous decrease of the fatigue properties of the AISI 316Ti, and there was recorded the negative effect of the sensitising on the ultra-high cycle fatigue properties of the AISI 316Ti.

scholarly journals Effects of Laser Peening Treatment on High Cycle Fatigue and Crack Propagation Behaviors in Austenitic Stainless Steel

2010 ◽  
Vol 4 (1) ◽  
pp. 94-104 ◽  
Author(s):  
Kiyotaka MASAKI ◽  
Yasuo OCHI ◽  
Takashi MATSUMURA ◽  
Takaaki IKARASHI ◽  
Yuji SANO
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Crack Propagation ◽  
High Cycle Fatigue ◽  
Laser Peening ◽  
Cycle Fatigue

Damage Assessment on Low Cycle Fatigue Properties of Cyclic Pre-Strained Austenitic Stainless Steel

2011 ◽  
Author(s):  
Nao Fujimura ◽  
Hiroyuki Oguma ◽  
Takashi Nakamura
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Fatigue Damage ◽  
Low Cycle Fatigue ◽  
Strain Ratio ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Damage Law ◽  
Number Of Cycles

The effects of cyclic pre-strain on low cycle fatigue properties of austenitic stainless steel were investigated, and the fatigue damage was assessed based on several parameters such as the full width at half maximum (FWHM) of diffracted X-ray profile and surface roughness of specimens. The strain-controlled tests were conducted under strain ratio Rε = −1 and various constant total strain ranges. Also the change in remnant fatigue lives were investigated when the cyclic pre-strain were applied to the specimens under the different number of cycles which were determined with reference to the usage factor UFpre ranged from 0.2 to 0.8. As a result, the remnant fatigue life of the pre-strained samples became shorter than that of the sample without pre-strain as the UFpre increased. The relationship between the pre-strain damage expressed in UFpre and the remnant fatigue damage in UFpost was roughly described by the cumulative linear damage law: UFpre + UFpost = 1. Namely, the cyclic pre-strain affected the remnant fatigue lives. In order to evaluate the effects of cyclic pre-strain on fatigue lives more precisely, the damage in the cyclic pre-straining processes was estimated by using FWHM and surface roughness. The FWHM of the specimens with pre-strain once decreased with increase in UFpre, and then increased after showing a minimum value. The surface roughness of specimens increased linearly with an increase of the number of pre-straining cycles. These results suggested that the damage due to pre-strain can be assessed by means of FWHM and surface roughness of specimens.

A Perspective on Fatigue Damage by Decoupling LCF and HCF Loads in a Type 316LN Stainless Steel

2015 ◽  
Vol 34 (5) ◽  
Author(s):  
Aritra Sarkar ◽  
A. Nagesha ◽  
R. Sandhya ◽  
M.D. Mathew
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Fatigue Damage ◽  
Strain Amplitude ◽  
High Cycle Fatigue ◽  
Low Cycle Fatigue ◽  
Applied Strain ◽  
Cycle Fatigue ◽  
316Ln Stainless Steel ◽  
Type 316Ln Stainless Steel

AbstractPrior low cycle fatigue (LCF) deformation in a 316LN austenitic stainless steel reduced the remnant high cycle fatigue (HCF) life as a function of the amount of LCF exposure and the applied strain amplitude. A critical LCF pre-damage was found necessary for an effective LCF-HCF interaction to take place.

High Cycle Fatigue Properties of Duplex Stainless Steel in Air and 3.5% NaCl Solution

2015 ◽  
Vol 750 ◽  
pp. 114-120
Author(s):  
Shu Rong Yu ◽  
Wei Song ◽  
Shu Xin Li ◽  
Meng Kai
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
High Cycle Fatigue ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Ductile Mode ◽  
Bending Fatigue Test ◽  
Rotating Bending Fatigue ◽  
Rotating Bending ◽  
Austenite Grains

The high cycle fatigue of super duplex stainless steel of SAF 2507 was investigated by rotating bending fatigue test in both air and 3.5% NaCl environment. The results showed that there is no much reduction of the fatigue life in corrosive environment, which is 90% of the air fatigue strength. In air fatigue, failure happens in ductile mode with austenite grains having finer and straighter fatigue striations than ferrite grains. Width and spacing of striations vary with the orientation and locations when the second cracking occurs. It is not reliable to identify the phase by morphology of striations. In 3.5% NaCl environment, the fracture exhibits a mixed mode of cleavage and quasi-cleavage in ferrites and ductile in austenite grains.

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