The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Mengying Zhang - One of the best experts on this subject based on the ideXlab platform.
-
formation of ultra flexible conformal and nano patterned photonic surfaces via polymer Cold Drawing
Journal of Materials Chemistry C, 2018Co-Authors: Kaiwei Li, Nan Zhang, Ting Zhang, Zhe Wang, Ming Chen, Tingting Wu, Mengying ZhangAbstract:We report a lithography-free method for large-area plasmonic nano-patterning on ultrathin plastic films through a polymer Cold-Drawing process. We further transfer the ultra-flexible nano-patterned films onto the curved surfaces of plant leaves and apples to work as conformal SERS sensors.
R Kirchheim - One of the best experts on this subject based on the ideXlab platform.
-
atomic scale investigation of redistribution of alloying elements in pearlitic steel wires upon Cold Drawing and annealing
Ultramicroscopy, 2013Co-Authors: Yujiao Li, Pyuckpa Choi, Shoji Goto, C Borchers, Dierk Raabe, R KirchheimAbstract:Abstract A local electrode atom probe has been employed to analyze the redistribution of alloying elements including Si, Mn, and Cr in pearlitic steel wires upon Cold-Drawing and subsequent annealing. It has been found that the three elements undergo mechanical mixing upon Cold-Drawing at large strains, where Mn and Cr exhibit a nearly homogeneous distribution throughout both ferrite and cementite, whereas Si only dissolves slightly in cementite. Annealing at elevated temperatures leads to a reversion of the mechanical alloying. Si atoms mainly segregate at well-defined ferrite (sub)grain boundaries formed during annealing. Cr and Mn are strongly concentrated in cementite adjacent to the ferrite/cementite interface due to their lower diffusivities in cementite than in ferrite.
Qun Li - One of the best experts on this subject based on the ideXlab platform.
-
The application of the electro-plastic technique in the Cold-Drawing of steel wires
Journal of Materials Processing Technology, 1998Co-Authors: Guoyi Tang, Mingxin Zheng, Yonghua Zhu, Wei Fang, Jie Zhang, Qun LiAbstract:The application of electro-plastic processing technology in the Cold Drawing of steel wires is reported in this paper. The mechanism by which the electro-plastic effect (EPE) changes the material properties during Cold working is discussed. It is shown that the technology can successfully reduce the strength and the Drawing force, as well as increase the plasticity.
Eunsoo Choi - One of the best experts on this subject based on the ideXlab platform.
-
pullout resistance of straight niti shape memory alloy fibers in cement mortar after Cold Drawing and heat treatment
Composites Part B-engineering, 2014Co-Authors: Youngsoo Chung, Eunsoo ChoiAbstract:Abstract In our study, we found Cold Drawing to be an effective method for enhancing the pullout resistance of NiTi shape memory alloy (SMA) fibers in concrete. The pullout resistance was observed to be dependent on the contact pressure and friction coefficient at the interface between the fibers and the mortar matrix. The Drawing process increased the stiffness and yield stress of the fibers and consequently increased the contact pressure at the interface between the fibers and the mortar matrix. Moreover, heat treatment of the fibers after Cold Drawing was found to noticeably recover the fiber diameter, thereby significantly enhancing the pullout resistance. The enhancement of the interfacial bond strength by heat treatment verified the crack-closing capabilities of SMA-fiber-reinforced cement composites.
Yujiao Li - One of the best experts on this subject based on the ideXlab platform.
-
atomic scale investigation of redistribution of alloying elements in pearlitic steel wires upon Cold Drawing and annealing
Ultramicroscopy, 2013Co-Authors: Yujiao Li, Pyuckpa Choi, Shoji Goto, C Borchers, Dierk Raabe, R KirchheimAbstract:Abstract A local electrode atom probe has been employed to analyze the redistribution of alloying elements including Si, Mn, and Cr in pearlitic steel wires upon Cold-Drawing and subsequent annealing. It has been found that the three elements undergo mechanical mixing upon Cold-Drawing at large strains, where Mn and Cr exhibit a nearly homogeneous distribution throughout both ferrite and cementite, whereas Si only dissolves slightly in cementite. Annealing at elevated temperatures leads to a reversion of the mechanical alloying. Si atoms mainly segregate at well-defined ferrite (sub)grain boundaries formed during annealing. Cr and Mn are strongly concentrated in cementite adjacent to the ferrite/cementite interface due to their lower diffusivities in cementite than in ferrite.