Results 31 to 40 of about 2,624 (268)

Numerical study of optimized processing condition in rolling strike ultrasonic nanocrystalline surface modification of copper

International Journal of Lightweight Materials and Manufacture, 2020
Ultrasonic nanocrystalline surface modification (UNSM) is state-of-art surface modification technique in which both the static and dynamic loads are contributed in work hardening of surface layer and amount of residual stress.
Mohsen Razi, Saeid Shahraki, Reza Teimouri   +2 more
doaj   +1 more source

Active and passive compliant force control of ultrasonic surface rolling process on a curved surface

Chinese Journal of Aeronautics, 2022
Abstract Ultrasonic surface rolling process (USRP) is one of the effective mechanical surface enhancement techniques. During the USRP, unstable static force will easily do harm to the surface quality. In order to achieve a higher surface quality on the part with a curved surface, an active and passive compliant USRP system has been developed.
Kaiming ZHANG, Ji WANG, Yixin LIU, Shuang LIU, Xiancheng ZHANG   +4 more
openaire   +1 more source

Effect of Ultrasonic Surface Rolling Process on Surface Properties and Microstructure of 6061 Aluminum Alloy

Materials Research, 2023
Nano-surface layers were prepared on the surface of 6061 aluminum alloy using the ultrasonic surface rolling process (USRP). The surface morphology, surface roughness, microstructure, hardness, and corrosion resistance of 6061 aluminum alloy were systematically characterized using X-ray diffraction (XRD), laser scanning confocal microscopy (LSCM ...
Xiquan Ma, Weihai Zhang, Shubo Xu, Kangwei Sun, Xinzhi Hu, Guocheng Ren, Jianing Li, Xianhua Zhao, Fei Gao   +8 more
openaire   +3 more sources

Exploration of Key Process Parameters and Properties of 40Cr Steel in Ultrasonic Surface Rolling Process

Coatings, 2022
Ultrasonic surface rolling (USRP) is an effective process to improve a workpiece’s fatigue property, in which ultrasonic vibration and static force are applied on the workpiece’s surface. In order to clarify the ultrasonic rolling strengthening mechanism of critical components and optimize the USRP parameters, a theoretical model of ultrasonic rolling ...
Xiaobin Wu, Jun Cheng, Zhilong Xu, Leyang Dai, Qingshan Jiang, Bosheng Su, Li Zhu, Zhenye Zhao   +7 more
openaire   +1 more source

Residual Stress in Wheels: Comparison of Neutron Diffraction and Ultrasonic Methods, with Trends in RCF

, 2014
The critical damage mechanism on many GB passenger train wheels is Rolling Contact Fatigue (RCF) cracking in the rim. Evidence from field observations suggests that RCF damage occurs much more quickly as the wheelsets near the end of their life.
Bevan, Adam, Bevan, A. J., Kabra, S, Zhang, S. Y, Molyneux-Berry, P. B., Molyneux-Berry, Paul, Zhang, S. Y., Kabra, S.   +7 more
core   +1 more source

Experimental study on surface roughness processed by ultrasonic surface rolling process

Journal of Physics: Conference Series
Abstract In order to explore the formation principle of microscopic morphology of the lower surface of USRP, USRP theoretical analysis and processing experiments are carried out. Firstly, the spatial motion trajectory of tool head by USRP is established to reveal formation principle of surface morphology.
Haojie Wang, Xiaoqiang Wang
openaire   +1 more source

The Optimal Processing Parameters of Radial Ultrasonic Rolling Electrochemical Micromachining—RSM Approach

, 2020
Radial ultrasonic rolling electrochemical micromachining (RUR-EMM) is a new method of electrochemical machining (ECM). By feeding small and rotating electrodes aided by ultrasonic rolling, an array of pits can be manufactured, which is called ...
Xia Chen, Kailei He, Minghuan Wang
core   +1 more source

Nanocrystallization of Metallic Surfaces with Using the Methods of Intense Plastic Deformation (Review)

Успехи физики металлов, 2004
The paper reviews the principal paths of modification of the structure and properties of the metallic surfaces by the intense plastic deformation leading to the formation of nanostructure states in the near-surface region.
M. O. Vasiliev, G. I. Prokopenko, V. S. Filatova
doaj   +1 more source

Preparing Thick Gradient Surface Layer in Cu-Zn Alloy via Ultrasonic Severe Surface Rolling for Strength-Ductility Balance

, 2022
A gradient structure (GS) design is a prominent strategy for strength-ductility balance in metallic materials, including Cu alloys. However, producing a thick GS surface layer without surface damage is still a challenging task limited by the available ...
Wu, Guosong, Chen, Jianqing, Xu, Bingqian, Qisheng Sun, Wu, Hao, Jianqing Chen, Sun, Jiapeng, Jiapeng Sun, Hao Wu, Sun, Qisheng, Han, Ying, Guosong Wu, Bingqian Xu, Yantao Fu, Jing Han, Ying Han, Han, Jing, Fu, Yantao   +17 more
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source