The middle carbon steel (JIS S38C) is used for the axle of Japanese bullet train Shinkansen. In order to clarify the effect of cyclic load frequency on the very high cycle fatigue strength
Effect of small defect orientation on fatigue limit of Jun 16, 2015 · Qingqing Jiang, Chengqi Sun, Xiaolong Liu, Youshi Hong, Very-high-cycle fatigue behavior of a structural steel with and without induced surface defects, International Journal of Fatigue, 10.1016/j.ijfatigue.2016.05.032, 93, (352-362), (2016).
Key words:fractography, very-high-cycle fatigue, crack initiation Abstract:Very-High-Cycle Fatigue (VHCF) is the phenomenon of fatigue damage and failure of metallic materials or structures subjected to 10 8 cycles of fatigue loading and beyond. This paper attempts to investigate the VHCF behavior and mechanism of a high strength low alloy steel (main
Fractography and Crack Initiation of Very-High-Cycle Very-High-Cycle Fatigue (VHCF) is the phenomenon of fatigue damage and failure of metallic materials or structures subjected to 108 cycles of fatigue loading and beyond. This paper attempts to investigate the VHCF behavior and mechanism of a high strength low alloy steel (main composition:C-1% and Cr-1.5%; quenched at 1108K and tempered at 453K).
Gigacycle fatigue in high strength steelsvery high cycle fatigue (VHCF) failure at over 107 cycles. This disappearance of fatigue limits causes fatigue failures even in the gigacycle region, i.e., above 109 cycles. We therefore call this phenomenon gigacycle fatigue. Figures 1 and 2 show typical fatigue test results for conventional and high strength steels, respectively [1,2].
1 day ago · The fatigue performance of nitrided medium carbon steels, alloyed with V and Si, and heat treated to form martensite and bainite microstructures, was
Improving the Fatigue Performance of Vanadium and Silicon 1 day ago · The fatigue performance of nitrided medium carbon steels, alloyed with V and Si, and heat treated to form martensite and bainite microstructures, was
LOW AND HIGHCYCLE FATIGUE PROPERTIES OF VARIOUS STEELS Abstract Lowcycle fatigue properties were investigated on four carbon steels and five low alloy steels specified in JIS (Japanese Industrial Standard) for machine structural use, which are the most commonly used in Japan. Several different heats from each of several representative manufacturers were sampled so as to represent the average fatigue characteristics of current materials.
Normalizing Carbon Steels:This is the third Instructable in my series about heat treating of carbon steels. In order to understand the normalizing process, we must also understand the annealing process. The two have a lot in common and are easily, and often, mistaken for one
Thermodynamic entropy as a marker of highcycle monitor fatigue damage for the normalized SAE 1045 steel. The approach is based on temperature measure-ments carried out during constant amplitude and variable amplitude loading tests in the high-cycle fatigue regime. The experimental procedure is presented below followed by a methodology being related to damage accumulation
Threshold values for very high cycle fatigue failure of The very high cycle fatigue behaviour of high-strength steels is mostly affected by cracks which were initiated at non-metallic inclusions inside the fatigue specimens and hence under the surface.
Very high cycle fatigue of normalized carbon steelsInternational Journal of Fatigue2006281583-1589. DOI:10.1016/j.ijfatigue.2005.05.016  Xue Hongqian, et. al.
Variable amplitude very high cycle fatigue of 17-4PH steel Jan 01, 2021 · Fatigue cracks in steels are preferentially initiated at the surface in the high cycle fatigue (HCF) regime. A failure mechanism in steels is plastic strain localisation, which leads to crack formation at surface grains that are favourably oriented for cyclic slip,.
Very high cycle fatigue behavior of carbon manganese steelsVery high cycle fatigue behavior of carbon manganese steels . By Hongqian Xue Ad. Wagner B. Abstract. Abstract. 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.
Effect of shotpeening on fatigue behaviour in the gigacycle regime was investigated in order to clarify the duplex SN curve characteristics. Cantilevertype rotary bending fatigue tests were performed in laboratory air at room temperature by using hourglassshaped specimens of highcarbonchromium bearing steel, JIS SUJ2.Very high cycle fatigue behavior of bearing steel with Feb 01, 2020 · The fatigue life of RE-GCr15 bearing steel is more than 10 times longer than that of Normal-GCr15 steel in the VHCF regime, and the fatigue limit at 10 9 cycles increases by 9.4% from 720 MPa for Normal-GCr15 bearing steel to 788 MPa for RE-GCr15 bearing steel.