نتایج جستجو برای: فرآیند ecap

تعداد نتایج: 32642  

2017
Fariba Naghdi Roberto B Figueiredo Terence G Langdon

Equal-channel angular pressing (ECAP) was utilized to process a Bi‒42Sn eutectic alloy at room temperature using processing route A for 1, 2, 4, and 8 passes. Tensile testing was performed at room temperature under initial strain rates in the range of 1.0 × 10 -5 to 1.0 × 10 -2 s -1 . The results demonstrate that processing by ECAP improves the ductility in this material and the elongations to ...

Journal: :journal of theoretical and applied vibration and acoustics 0
mehdi eskandarzade school of mechanical engineering, college of engineering, university of tehran, 14395515 tehran, iran abolfazl masoumi school of mechanical engineering, college of engineering, university of tehran, 14395515 tehran, iran ghader faraji school of mechanical engineering, college of engineering, university of tehran, 14395515 tehran, iran

one of the great challenges in the processing of materials using equal channel angular pressing (ecap) is the high forming forces required to produce large shear deformation in the material. researchers show that the friction forces between the die and the sample constitute a great part of the total forming forces. recently, ultrasonic vibrations are successfully implemented into the ecap proce...

2012
Rimma Lapovok Yuman Zhu Jian-Feng Nie Yuri Estrin Suveen N. Mathaudhu

Ternary Mg–Y–Zn alloys have attracted considerable attention due to their excellent mechanical properties and unique microstructures. Microstructural variation and the resulting mechanical properties can be affected by various processing routes, particularly those involving severe plastic deformation of a cast billet. The following approach was used in this work to perform a comparative study: ...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2015
Hongbo Liu Mei Yuan Xiaolan Yang Xiaolei Hu Juan Liao Jizheng Dang Yanling Xie Jun Pu Yuanli Li Chang-Guo Zhan Fei Liao

Spectrophotometric-dual-enzyme-simultaneous-assay (SDESA) for enzyme-linked-immunosorbent-assay (ELISA) of two components in one well is a patented platform when a special pair of labels is accessible. With microplate readers, alkaline phosphatase on 4-nitro-1-naphthylphosphate (4NNPP) served as label A; Pseudomonas aeruginosa arylsulfatase (PAAS) and acetylcholinesterase (AChE) on their substr...

2012
Jacques Huot Daniel Fruchart

In this paper we review the latest developments in the use of severe plastic deformation (SPD) techniques for enhancement of hydrogen sorption properties of magnesium and magnesium alloys. Main focus will be on two techniques: Equal Channel Angular Pressing (ECAP) and Cold Rolling (CR). After a brief description of these two techniques we will discuss their effects on the texture and hydrogen s...

Journal: :Key Engineering Materials 2022

In this study, investigations into the deformation behavior of aluminum AA5083 at elevated temperatures were carried out on a newly developed test rig. The rig was jointly with ZwickRoell GmbH & Co. KG (Germany) and is based Nakajima heated dies. way, statements can be made about lightweight potential alloy. Additionally, equal-channel angular pressing (ECAP) performed to process sheet meta...

2015
Refilwe P. Molatlhegi Alisa Phulukdaree Krishnan Anand Robert M. Gengan Charlette Tiloke Anil A. Chuturgoon A R M Ruhul Amin

Increased death rates due to lung cancer have necessitated the search for potential novel anticancer compounds such as carbazole derivatives. Carbazoles are aromatic heterocyclic compounds with anticancer, antibacterial and anti-inflammatory activity. The study investigated the ability of the novel carbazole compound (Z)-4-[9-ethyl-9aH-carbazol-3-yl) amino] pent-3-en-2-one (ECAP) to induce cyto...

2014
Sergio Cinnirella Rafael Sardà Juan Luis Suárez de Vivero Ruth Brennan Alberto Barausse John Icely Tiziana Luisetti Carla Murciano Tim O'Higgins Luca Palmeri Maria Giovanna Palmieri Pascal Raux Sian Rees Joan Albaigés Nicola Pirrone

The Mediterranean region is of fundamental importance to Europe given its strategic position. The responsibility for its overall ecosystem integrity is shared by European Union Member States (EU-MS) and other Mediterranean countries. A juxtaposition of overlapping governance instruments occurred recently in the region, with the implementation of both the Marine Strategy Framework Directive (MSF...

2015
Colette McKay

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Journal: :British journal of anaesthesia 1987
N J Harper N D Pugh T E Healy H V Petts

The effects of neuromuscular blockade by atracurium and vecuronium on the power spectrum of the evoked compound action potential (ECAP) of the adductor pollicis were investigated in 30 adult patients undergoing elective surgery. The changes in amplitude and mean power frequency (MPF) of the ECAP were measured. Ten patients received an ED95 (0.23 mg kg-1) of atracurium and 10 received an ED95 (0...

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