Results 21 to 30 of about 75,113 (266)

Sliding wear behaviour of salt bath nitrided 316LN austenitic stainless steel

open access: yesApplied Surface Science Advances, 2023
The wear behaviour of AISI 316LN austenitic stainless steel has been studied by varying the duration of nitriding. AISI 316LN steel was nitrided using salt bath nitriding which consist of a mixture of 70:30 ratio of alkaline cynates and carbonates ...
Arun Prasad Murali   +4 more
doaj   +1 more source

Microstructure and wear behavior of arc-shaped 40CrNiMo steel after laser hardening

open access: yesJournal of Materials Research and Technology, 2023
This study focuses on arc-shaped 40CrNiMo steel; the microstructure characteristics and formation mechanism of the hardened layer at different positions were investigated after laser hardening.
Jia Li   +3 more
doaj   +1 more source

Effect of Load and Frequency on the Wear Performance of 42CrMo4 and 38MnVS6 Steels [PDF]

open access: yesCailiao Baohu
In order to investigate the wear performance of 42CrMo4 and 38MnVS6—two alloy steels used as piston materials, reciprocating dry friction tests on two types of alloy steel materials were conducted under different loads and frequencies, using GCr15 steel ...
JIANG Liyuan, XU Jidong, DING Cong, GONG Chuansheng, XIONG Peiyou, ZHANG Jian, PIAO Zhongyu
doaj   +1 more source

Dynamics Analysis of Spatial Parallel Mechanism with Irregular Spherical Joint Clearance

open access: yesShock and Vibration, 2019
Clearances caused by machining accuracy and assembly requirements are regular, but they will be irregular due to the wear of the kinematic pairs. At present, there are few studies on wear of space kinematic pairs.
Xiulong Chen, Yuewen Li
doaj   +1 more source

Experimental Study on Wear Characteristics of PCBN Tool with Variable Chamfered Edge

open access: yesChinese Journal of Mechanical Engineering, 2019
Owing to heavy dynamic and thermal loads, PCBN tools are seriously worn during hard cutting, which largely constrains the improvement of their machining performance.
Tao Chen   +3 more
doaj   +1 more source

Design and development of a novel sliding friction and wear tester with complex working conditions

open access: yesScientific Reports, 2021
Serious wear phenomena occur in mining machinery under complex working conditions, and the wear of machine parts is primarily caused by the synergistic effect of adhesive wear, abrasive wear, corrosive wear, etc.
Jinrong Chai   +4 more
doaj   +1 more source

On dry sliding wear of ECAPed Al-Mg-Zn alloy: Wear rate and coefficient of friction relationship

open access: yesAlexandria Engineering Journal, 2021
Equal channel angular pressing (ECAP) of AA7075 alloy, at room temperature, with six numbers of passes, has been successfully processed. Microstructure observations, microhardness experiment, wear test, and worn surface morphology examination were ...
Maged Elhefnawey   +5 more
doaj   +1 more source

Effect of Cyclic Cryogenic Treatment on Wear Resistance, Impact Toughness, and Microstructure of 42CrMo Steel and Its Optimization

open access: yesAdvances in Materials Science and Engineering, 2021
Cyclic cryogenic treatment, a major cycle accompanied by zero or more subsidiary cycles, was conducted on the hardened 42CrMo steel using orthogonal design method to investigate the effect of different parameters (cryogenic temperature, holding time, and
Haidong Zhang   +3 more
doaj   +1 more source

Purification and preparation of Marchantia polymorpha Auxin Response Factor 2 for phase separation studies

open access: yesFEBS Open Bio, EarlyView.
We describe detailed protocols for the purification and preparation of Marchantia polymorpha Auxin Response Factor 2 (MpARF2). This protein is fused to an MBP solubility tag and an mNG fluorescent tag and is purified from Escherichia coli. The presented procedures make it possible to study MpARF2 assemblies, which could arise from phase separation ...
Bas Janssen   +5 more
wiley   +1 more source

Factors Associated With the Rising Trend in Self‐Reported Cognitive Disability Among U.S. Adults Aged 18–39 From 2013–2024

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Building on our prior Behavioral Risk Factor Surveillance System analysis identifying adults aged 18–39 as the primary driver of the national increase in self‐reported cognitive disability, we examined factors associated with this rise using 2013–2024 U.S. BRFSS data. Methods We analyzed U.S.
Adam de Havenon   +9 more
wiley   +1 more source

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