Low Tension-Tension Cycle Fatigue Properties of 301 Stainless Steel Thin Sheets

2013 ◽  
Vol 351-352 ◽  
pp. 887-891
Author(s):  
Shi Ming Cui ◽  
Rui Dong Wang ◽  
Yong Jie Liu ◽  
Tao Long ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Stress Ratio ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Fatigue Properties ◽  
Testing System ◽  
Loading Frequency ◽  
Thin Sheets ◽  
Cycle Fatigue ◽  
Low Tension

By using of a micro mechanical fatigue testing system, low tension-tension cycle fatigue properties of 301 stainless steel thin sheets with a thickness of 0.1 mm were studied. The effects of loading frequency and stress ratio were considered in the tests. The results show the S-N curves descend continuously in the low cycle regime. Cyclic σ-N curve was obtained according to the traditional fatigue theory. It agrees well with the experimental data, showing that the traditional fatigue research methods are also suitable to describe thin sheets in a certain extent. With the increase of loading stress ratio, the fatigue strength of thin sheets is increased. There is an evident effect of frequency on the fatigue behavior of the thin sheets.

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.

Effects of Stress Frequency and Stress Ratio on the Fatigue of Glass/Epoxy Composite Materials

2006 ◽  
Vol 326-328 ◽  
pp. 1031-1034 ◽  
Author(s):  
Shun Fa Hwang ◽  
Yi Der Su
Keyword(s):  
Composite Materials ◽  
Room Temperature ◽  
Stress Ratio ◽  
Fatigue Testing ◽  
Viscoelastic Behavior ◽  
Fiber Composites ◽  
Fatigue Properties ◽  
Loading Frequency ◽  
Glass Fiber Composites ◽  
Stress Ratios

Composite materials using polymer resins as matrices have viscoelastic behavior. This behavior has effects on the fatigue properties of composite materials. Therefore, one can accelerate the fatigue testing if the loading frequency or temperature is changed. The purpose of this work is to investigate the accelerated fatigue properties of glass/fiber composites. In order to establish the accelerated fatigue properties of glass/epoxy composites, the fatigue testing of unidirectional specimens with different angles is conducted at room temperature under different stresses, stress frequencies, and stress ratios. The results indicate that the fatigue life increases with the increasing of stress frequency or stress ratio for the three types of unidirectional specimens. The reasons for these increasing effects are also discussed.

scholarly journals Giga-Cycle Fatigue Behavior of the Nuclear Structure of 316L Weldments

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhihong Xiong ◽  
Engao Peng ◽  
Lianghua Zeng ◽  
Qirong Xu
Keyword(s):  
Fatigue Strength ◽  
Arc Welding ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Laser Beam Welding ◽  
Fatigue Loading ◽  
Testing System ◽  
Cycle Fatigue ◽  
Gas Tungsten Arc ◽  
Ultrasonic Fatigue

Some components made of 316L stainless steel in nuclear reactors are connected by welding, and these are under giga-cycle fatigue loading. Therefore, the giga-cycle fatigue behavior of 316L weldments, which are fabricated by Laser Beam Welding (LBW) and Gas Tungsten Arc Welding (GTAW), were investigated using an ultrasonic fatigue testing system. The results indicate that the fatigue strength of LBW-made weldments is almost the same as that of GTAW-made weldments even though the microstructure and mechanical properties of the weldments are different. For the LBW-made specimens, the LBW-induced internal pores with a diameter range of about 89–270 μm were observed in the fracture surface. However, an obvious decrease in fatigue life was not observed in such cases. For the GTAW-made specimens, the quality requirement of the weld seam has to be more strict to prevent fatigue strength from decreasing. The fatigue failure mode of the GTAW-made specimens is the same as that of LBW-made specimens in the high-cycle fatigue regime but different in the giga-cycle fatigue regime.

Low Cycle Fatigue Behavior of 316L Stainless Steel Thin Sheets

2013 ◽  
Vol 19 (6) ◽  
pp. 1547-1551
Author(s):  
Yongjie Liu ◽  
Chao He ◽  
Qingyuan Wang ◽  
Xiao Zhao
Keyword(s):  
Stainless Steel ◽  
316L Stainless Steel ◽  
Low Cycle Fatigue ◽  
Fatigue Behavior ◽  
Thin Sheets ◽  
Cycle Fatigue

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.

Effect of Temperature and Loading Frequency on the Fatigue Behavior of Ti-17

2015 ◽  
Vol 664 ◽  
pp. 131-139 ◽  
Author(s):  
Jiu Kai Li ◽  
Yong Jie Liu ◽  
Qing Yuan Wang ◽  
Fang Hou
Keyword(s):  
Room Temperature ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Fatigue Tests ◽  
Effect Of Temperature ◽  
Fatigue Properties ◽  
Frequency Effect ◽  
Loading Frequency ◽  
Ultrasonic Fatigue ◽  
Increasing Temperature

A high-temperature ultrasonic fatigue testing system was developed to evaluate the gigacycle fatigue properties of Ti-17. Ultrasonic (20 kHz) fatigue tests were performed at room temperature, 200°C and 350°C, respectively. The dynamic Young’s modulus and fatigue endurance limit decrease with increasing temperature linearly. Rotating bending (50 Hz) tests were performed to evaluate the influence of loading frequency at room temperature, 200°C and 350°C, respectively. There is an obviously loading frequency effect at elevated temperature, although no loading frequency effect at room temperature.

scholarly journals Very High Cycle Fatigue Behavior of Carbon Manganese Steels

2010 ◽  
Vol 146-147 ◽  
pp. 1780-1783
Author(s):  
Hong Qian Xue ◽  
Danièle Wagner
Keyword(s):  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Effect Of Temperature ◽  
Testing System ◽  
Loading Frequency ◽  
Ultrasonic Fatigue ◽  
Carbon Manganese Steels ◽  
Temperature Scanning ◽  
Initial Results ◽  
Manganese Steels

An ultrasonic fatigue testing system capable of operating at temperatures at 250 has been introduce to study the fatigue behavior of carbon manganese steels (A42 and A48) and loading frequency of approximately 20 kHz. Endurance limit results were comparable to those generated at room temperature to determine the effect of temperature. Scanning electron microscopy was then used to determine the initiation sites and the failure mechanisms. Initial results indicate that fatigue strength decrease a little at 250 , interior inclusions were the major microstructural feature responsible for crack initiation in the alloy.

Corrosion fatigue properties of narrow gap laser welded 301L stainless steel

2019 ◽  
Vol 33 (01n03) ◽  
pp. 1940039
Author(s):  
Hang Zhang ◽  
Tao Yang ◽  
Kai Sun ◽  
Yingcan Hu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Stainless Steel ◽  
Corrosion Fatigue ◽  
Stress Ratio ◽  
Fatigue Behavior ◽  
Fatigue Properties ◽  
Narrow Gap ◽  
Chromium Depletion ◽  
Scanning Electron

In this paper, the corrosion-fatigue behavior of 301L stainless steel (SS) welded joints using narrow gap laser wire welding under the different stress ratio and concentrations of Cl[Formula: see text] has been investigated. Corrosion fatigue life curve (S-N) under different conditions was tested and fitted to obtain the fatigue limit. The microstructures and fracture surfaces of specimens were examined by optical microscopy (OM) and scanning electron microscopy (SEM). EBSD results have shown that chromium depletion in the weld heat-affected zone (HAZ) contributes to the decrease of corrosion fatigue properties in the HAZ.

Fatigue of Unidirectional Cord-Rubber Composites

1999 ◽  
Vol 27 (1) ◽  
pp. 48-57 ◽  
Author(s):  
Y. Liu ◽  
Z. Wan ◽  
Z. Tian ◽  
X. Du ◽  
J. Jiang ◽  
...  
Keyword(s):  
Damage Accumulation ◽  
Fatigue Testing ◽  
Fatigue Behavior ◽  
Constant Load ◽  
Testing System ◽  
Rubber Composites ◽  
Cycle Frequency ◽  
Periodic Loading ◽  
Fatigue Damage Accumulation ◽  
Rubber Composite

Abstract A fatigue testing system is established with which the real-time recording of stress, strain, temperature, and hysteresis loss of rubbers or cord-rubber composite specimens subjected to periodic loading or extension can be successfully carried out. Several problems are connected with the experimental study of the fatigue of rubber composites. In constant extension cycling, the specimen becomes relaxed because of the viscoelasticity of rubber composites, and the imposed tension-tension deformation becomes complex. In this method, the specimen is unlikely to fail unless the imposed extensions are very large. Constant load cycling can avoid the shortcomings of constant extension cycling. The specially designed clamps ensure that the specimen does not slip when the load retains a constant value. The Deformation and fatigue damage accumulation processes of rubber composites under periodic loading are also examined. Obviously, the effect of cycle frequency on the fatigue life of rubber composites can not be ignored because of the viscoelasticity of constituent materials. The increase of specimen surface temperature is relatively small in the case of 1 Hz, but the temperature can easily reach 100°C at the 8 Hz frequency. A method for evaluating the fatigue behavior of tires is proposed.

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