A comparison of bending-fatigue properties of surface-induction-hardened SAE 1045 bar steels with and without vanadium and the influence of comparable low-temperature induction-tempering and furnace-tempering treatments

2021 ◽  
Vol 807 ◽  
pp. 140812
Author(s):  
Steven W. Thompson ◽  
Venkkateesh Parthasarathi ◽  
Kip O. Findley
Keyword(s):  
Low Temperature ◽  
Fatigue Properties ◽  
Bending Fatigue ◽  
Temperature Induction ◽  
Surface Induction ◽  
Induction Tempering

Development of Low Temperature Nitriding Process and its Effects on the 4-Points Bending Fatigue Properties of Commercially Pure Titanium

2014 ◽  
Vol 891-892 ◽  
pp. 656-661 ◽  
Author(s):  
Shoichi Kikuchi ◽  
Yuta Nakamura ◽  
Akira Ueno ◽  
Kei Ameyama
Keyword(s):  
Low Temperature ◽  
Cold Rolling ◽  
Plasma Nitriding ◽  
Pure Titanium ◽  
Nitriding Process ◽  
Fatigue Properties ◽  
Material Surface ◽  
Titanium Nitrides ◽  
Bending Fatigue ◽  
Commercially Pure

In order to improve both of the fatigue and tribological properties of commercially pure (CP) titanium, a low temperature nitriding process was developed. Cold rolling was introduced as pre-treatment of plasma nitriding to create fine grains which could accelerate the diffusion of nitrogen into the material. Surface microstructures of the nitrided specimens pre-treated with cold rolling were characterized using a micro-Vickers hardness tester, an optical microscope, a scanning electron microscope (SEM), X-ray diffraction (XRD) and electron backscatter diffraction technique (EBSD). Titanium-nitrides (TiN and Ti2N) were formed on the surface nitrided at the temperature greater than 600 °C. Moreover, thicker compound layer was formed in the nitrided CP titanium pre-treated with cold rolling in comparison to the only nitrided one, resulting in showing higher hardness. 4-points bending fatigue tests were performed for the specimens treated with low temperature nitriding (600 °C), which could suppress the grain-coarsening, under the stress ratio R = 0.1 at room temperature. In addition, fatigue fracture mechanism of nitrided CP titanium was discussed based on the observations of microstructure and fracture surface.

COPPER ALLOY No. 510

Alloy Digest ◽  
1971 ◽  
Vol 20 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Low Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Fatigue Properties ◽  
Temperature Performance ◽  
Tin Bronze

Abstract COPPER ALLOY No. 510 is a tin bronze containing about 0.25% phosphorus. It combines high strength and toughness with excellent fatigue properties. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on low temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-238. Producer or source: Brass mills.

Test on the bending fatigue properties of 18CrNiMo7-6 gear material

2016 ◽  
pp. 275-280
Author(s):  
Jiqiang Li ◽  
Zhihong Zhang ◽  
Shidang Yan ◽  
Zhongming Liu
Keyword(s):  
Fatigue Properties ◽  
Bending Fatigue

scholarly journals Effects of Case Depth and Notch Shape on the Rotating Bending Fatigue Properties of Carburized Steel

1980 ◽  
Vol 66 (3) ◽  
pp. 410-417 ◽  
Author(s):  
Tôru FURUKAWA ◽  
Shizuyo KONUMA ◽  
Hideyasu SAKANIWA ◽  
Tadashi KASUYA
Keyword(s):  
Case Depth ◽  
Fatigue Properties ◽  
Bending Fatigue ◽  
Carburized Steel ◽  
Rotating Bending Fatigue ◽  
Rotating Bending

Fatigue of Metal Free Reed due to Self-Excited Oscillation

2008 ◽  
Vol 33-37 ◽  
pp. 267-272
Author(s):  
Yoshinobu Shimamura ◽  
Keiichiro Tohgo ◽  
Hiroyasu Araki ◽  
Yosuke Mizuno ◽  
Shoji Kawaguchi ◽  
...  
Keyword(s):  
Fatigue Testing ◽  
The Self ◽  
Fatigue Properties ◽  
Bending Fatigue ◽  
Metal Free ◽  
Mass Damper ◽  
Excited Oscillation ◽  
Analytical Research ◽  
Fatigue Characteristics ◽  
Good Agreement

Metal free reeds are used for musical instruments like harmonica. Free reeds are small, thin cantilevers, and oscillate by blowing air. It is reported that free reeds break due to fatigue during play. In order to elongate the life of free reeds, the fatigue properties should be investigated and a motion analysis method should be developed. The experimental and analytical research on metal free reed, however, has been rarely reported. In this study, two types of fatigue testing machines were developed to obtain basic fatigue characteristics. The fatigue testing machines are designed for bending fatigue of actual free reeds whose thickness is less than 400 μm. An S-N diagram is successfully obtained up to 107 cycles by using the developed fatigue testing machines. The fracture surfaces of fatigued specimens are in good agreement with those of free reeds failed in use. Then, an analytical method for the self-excited oscillation of free reeds was developed based on a mass-damper-spring model. The proposed method can take account for the shape of free reed. The self-excited oscillation of free reeds with different shape are analyzed and in good agreement with experimental results.

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