Results 1 to 10 of about 8,686 (222)
Metallographic organization and tensile properties of FSSP-modified H62 copper alloy surface [PDF]
Advanced Composites Letters, 2020 In this study, the surface of friction stir surface processing (FSSP)-modified copper alloy was altered by different passes of modification and lower pressure after selecting FSSP process parameters. The results showed that the grain size of the modified copper alloy surface was refined under various processes.
Liu Shengrong +5 more
doaj +3 more sources
Effect of Processing Parameters and Temperature on Sliding Wear of H62 Copper Alloy Modified by Friction Stir Surface Processing [PDF]
Materials Science, 2017 H62 copper alloy surface was modified by friction stir processing using various values of processing parameters. The friction and wear experiments of surfaces were done at different temperatures, and the wear properties of modified surfaces thus determined were analyzed.
SONG, Weiwei +4 more
core +7 more sources
Simulation Analysis of Stress Corrosion of H62 Copper Alloy
Journal of Physics: Conference Series, 2021 Abstract H62 copper alloy is a commonly used material in engineering, and stress cracking of copper alloys has always been concerned. In this paper, a two-dimensional model of H62 copper alloy was established by COMSOL electrochemical module, and the stress corrosion of H62 copper alloy was analyzed by using measured engineering stress ...
Niu Wentao, Yu Dazhao, Zhang Tong
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On the Estimation of Fatigue Crack Initiation Life of H62 Brass [PDF]
Archives of Metallurgy and Materials, 2021 In the present paper, the excavation of the energetic approach that estimates the fatigue crack initiation life of metal is conducted for H62 brass. The benefit of the energetic approach is the division of the actual applied strain range Δε into two parts, that is, a damage strain range Δεd that induces fatigue damage within the metal, and an undamaged
M. Zheng, S. Zhang, X.J. Peng, Y. Wang
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Galvanic corrosion behavior of 5083 alloy/H62 brass couple under magnetic field
Journal of Materials Research and Technology, 2022 Galvanic corrosion behavior of 5083 alloy/H62 brass couple in 3.5 wt.% NaCl solution under 0, 0.2 and 0.4 T magnetic field were studied by microstructure observation, immersion test and electrochemical measurement. The mixed potential theory was used to estimate the galvanic current density and the mixed potential of the galvanic corrosion between 5083
Xin Zhang +5 more
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Surface Integrity and Friction Performance of Brass H62 Textured by One-Dimensional Ultrasonic Vibration-Assisted Turning [PDF]
Micromachines, 2021 The processing method, one-dimensional ultrasonic vibration-assisted turning (1D UVAT), is a potential and efficient way for fabricating a micro-textured surface. This paper aims at exploring the surface integrity and friction performance of brass H62 textured by the 1D UVAT. Four micro-textured surfaces with a specific distribution, size, and shape of
Xianfu Liu, Jianhua Zhang, Li Li
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Structural Heterogeneity in a Phototransformable Fluorescent Protein Impacts its Photochemical Properties. [PDF]
Adv Sci (Weinh)Solution NMR detects two distinct Green‐states of the photoconvertible fluorescent protein mEos4b with an altered hydrogen‐bonding network in the chromophore pocket. The relative population of these two conformational states is UV light dependent, providing a convenient way of assessing their different on‐to‐off photoswitching and Green‐to‐Red ...
Maity A +6 more
europepmc +2 more sources
American Journal of Botany, Volume 110, Issue 12, December 2023., 2023 Abstract Premise Phylogeographical studies are fundamental for understanding factors that influence the spatial distribution of genetic lineages within species. Population expansions and contractions, distribution shifts, and climate changes are among the most important factors shaping the genetic compositions of populations.
Vanessa Sánchez‐Acevedo +6 more
wiley +1 more source
CCD photometry and new models of 5 minor planets [PDF]
, 1999 We present new R filtered CCD observations of 5 faint and moderately faint asteroids carried out between October, 1998 and January, 1999. The achieved accuracy is between 0.01-0.03 mag, depending mainly on the target brightness.
Kiss, L. L., Sarneczky, K., Szabo, Gy.
core +2 more sources
A new bound for the 2/3 conjecture [PDF]
, 2012 We show that any n-vertex complete graph with edges colored with three colors contains a set of at most four vertices such that the number of the neighbors of these vertices in one of the colors is at least 2n/3. The previous best value, proved by Erdos,
Baber +6 more
core +7 more sources