Dec 18, 2019 · X. J. Cao, Y. S. Pyoun and R. Murakami, Fatigue proper ties of a S45C steel subjected to ultrasonic nanocrystal sur face modification, Applied Surface Science, 256 Effect of Shakedown on the Fatigue Limit of Ultrasonic Sep 10, 2019 · Zhang, J., Wu, B., Zhang, L., Pyoun, Y., Murakami, R.:Effect of ultrasonic nanocrystal surface modification on surface and fatigue properties of quenching and
The effect of nano grain surface layer generated by ultrasonic impact on the fatigue behaviors of a titanium alloy Ti3Zr2Sn3Mo25Nb (TLM) was investigated. Three vibration strike-numbers of 24,000 times, 36,000 times and 48,000 times per unit are chosen to treat the surface of TLM specimens. Nanocrystals with an average size of 30 nm are generated. Effect of Ultrasonic Surface Impact on the Fatigue The paper deals with the fatigue behaviour assessment of TLM ium alloy subjected to ultrasonic surface impact (the treatment involved three different values of vibration strike number). The discussion on fatigue behaviour was supported by residual stress, micro Effect of the Ultrasonic Surface Rolling Process on the Jul 20, 2017 · The effect of the ultrasonic surface rolling process (USRP) on the rotary bending fretting fatigue (FF) of Ti-6Al-4V alloy was investigated. The reason for the USRP's ability to improve the FF resistance of Ti-6Al-4V alloy was studied.
Ultrasonic nanocrystal surface modification (USNM) utilizing ultrasonic vibration energy is a method which induces severe plastic deformation to a material's surface and an enhanced surface layer in order to produce a nano-structured surface. In this paper, USNM was performed to enhance the surface properties of quenched and tempered S45C steel by producing a nanostructured surface layer. Effects of electropulsing assisted ultrasonic impact Electropulsing has also been reported to produce a deeper plastically affected layer in metals subjected to ultrasonic impact treatment. Fatigue properties of a S45C steel subjected to Enhanced Surface Properties and Microstructure Evolution Abstract. In this study, the enhanced surface properties and microstructure evolution of quenched and tempered cold work die steel Cr12MoV, which were induced by ultrasonic surface rolling process combined with deep cryogenic treatment (UDCT), were systematically investigated.
-Ti (Ti13Nb13Zr) alloy was subjected to ultrasonic shotpeening (USSP) and a nanocrystalline layer of ~60 µm thickness was developed on the metastable Ti-13-Nb-13Zr alloy. In this investigation, the surface hardening and low cycle fatigue (LCF) behavior of the alloy were studied after USSP treatment. Compared to the un-shotpeened samples, the shotpeened specimens exhibit high surface Influence of multiple ultrasonic impact treatments on The effects of multiple ultrasonic impact treatments (UITs) on the surface properties of SUS301 steel were investigated using an optical microscope, a step profiler, a non-contact optical profiler NRIM FATIGUE - NIMSdata sheets on fatigue properties of non-load-carrying cruciform welded joints of sm50b rolled steel for welded structure -effect of specimen size-1979:14:data sheets on elevated-temperature, high-cycle fatigue properties of s45c(0.45c) steel for machine structural use:1979:15
In ultrasonic nanocrystalline surface modification (UNSM) technology, ultrasonic energy is used as a method to apply severe plastic deformations on metal surfaces. Therefore, the surface structure of the metal, which is micro in its normal state, is transformed into a nanostructure up to a certain depth. This method results in mechanical improvements such as hardness, fatigue, yield stress Steel 7225 surface ultrafine structure and improvement of In ultrasonic nanocrystalline surface modification (UNSM) technology, ultrasonic energy is used as a method to apply severe plastic deformations on metal surfaces. Therefore, the surface structure of the metal, which is micro in its normal state, is transformed into a nanostructure up to a certain depth. This method results in mechanical improvements such as hardness, fatigue, yield stress Study on the fatigue properties of plasma nitriding S45C Wu et al. [27, 28] studied the influence of hybrid surface treatment (UNSM before or after plasma nitriding) on the fatigue properties of S45C, the 1 × 10 8 cycles fatigue strength was improved
ical and fatigue properties of an austenitic steel subjected to very high cycle loadings (R¼ 1) at high temperatures using the ultrasonic fatigue testing machine and numerical simulations. 2. Material The material analyzed in this research is an austenitic steel because of Study on fatigue properties of S45C steel after hybrid In this study ultrasonic nanocrystal surface modification (UNSM), as one of S2PD methods, was employed on the surface treatment of S45C steel to enhance the fatigue properties. And a stronger surface layer produced by plasma nitriding combined with UNSM was also studied.