Research Progress of Ultrafine-Grained Pure Titanium Produced by Equal-Channel Angular Pressing
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چکیده
منابع مشابه
Equal Channel Angular Pressing to Produce Ultrafine Pure Copper with Excellent Electrical and Mechanical Properties
In this article, commercially pure copper samples were severely deformed by equal channel angular pressing (ECAP) up to eight passes at room temperature. The effects of severe plastic deformation on the microstructure, mechanical properties, and electrical conductivity of the copper were investigated. The microstructure evolution was followed by optical microscope and field emission scanning el...
متن کاملequal channel angular pressing to produce ultrafine pure copper with excellent electrical and mechanical properties
in this article, commercially pure copper samples were severely deformed by equal channel angular pressing (ecap) up to eight passes at room temperature. the effects of severe plastic deformation on the microstructure, mechanical properties, and electrical conductivity of the copper were investigated. the microstructure evolution was followed by optical microscope and field emission scanning el...
متن کاملEffects of Temperature and Strain Rate on Plastic Deformation of Ultrafine-Grained Copper Prepared by Equal-Channel Angular Pressing
Ultrafine-grained (UFG) pure copper of 280 nm grain size was prepared by equal-channel angular pressing. Tensile tests, strain-rate change tests and temperature change tests were conducted on UFG Cu in the temperature range between 77K and 373K. As usual, tensile strength increased as temperature decreased and strain rate increased. The activation energy of deformation increased linearly with t...
متن کاملSize effect in equal channel angular pressing (ECAP) process
The influence of the sample size (diameter while keeping the length constant) in equal channel angular pressing (ECAP) of pure aluminum is examined using finite element method (FEM) and experiment. Different sized aluminum rods were processed via ECAP and the effect of sample size on the strain homogeneity, process load, and the ratio of the friction to the total force were evaluated. The resul...
متن کاملRe-strengthening in AA6063 Alloy During Equal Channel Angular Pressing
Equal channel angular pressing (ECAP) is carried out using two different configurations for the exit channel of the ECAP die, i.e., relieved and choked, with angles of 0.2 °. It is found that using a die with relieved exit channel, the sample was extruded for 6 passes with no surface cracks and an average cell size of 727 nm and a fraction of high angle grain boundaries of 54 % were achieved. M...
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ژورنال
عنوان ژورنال: Rare Metal Materials and Engineering
سال: 2017
ISSN: 1875-5372
DOI: 10.1016/s1875-5372(18)30050-x