Browsing by Subject "ECAE"
Now showing items 1-20 of 23
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(2009-05-15)A thermodynamic framework was presented for the development of powderconstitutive models. The process of powder compaction through Equal ChannelAngular Extrusion (ECAE) at room temperature was modeled using the finiteelement ...
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(2009-05-15)Ultrafine grained (UFG), and nanocrystalline (nc) materials are of interest because of the high strength, compared with coarse grained counterparts. Several current methods to fabricate UFG and nc materials result in samples ...
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(2016-09-22)The goal of this work was to increase the room temperature ductility of polycrystalline tungsten to over 10% tensile elongation. In conjunction with this, the objective goals were to determine the underlying deformation ...
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(2014-12-15)Samples of oxygen-free high conductivity (OFHC) copper (C101), commercially pure copper (C110), and copper chromium alloy (C182) were subjected to severe plastic deformation (SPD) using equal-channel angular extrusion ...
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(Texas A&M University, 2007-04-25)The objectives of this study were to examine the effect of strain and path change on the microstructural evolution of ultrafine grained interstitial free (IF) steel during equal channel angular extrusion (ECAE); to determine ...
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(2012-02-14)Magnesium and its alloys have been considered as alternatives to aluminum alloys and steels for structural applications in automotive and aerospace applications due to their superior specific strength and light-weight. ...
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(2017-12-13)The present work aims at revealing the effect of grain size on the post processing mechanical behavior of the equiatomic CoCrFeMnNi high entropy alloy (HEA) upon severe plastic deformation (SPD). SPD has been applied using ...
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(Texas A&M University, 2004-09-30)Nickel-Titanium (NiTi) shape memory alloys have been the focus of extensive research due to its unique characteristics such as high recoverable strain and ductility. However, solutionized samples of NiTi do not demonstrate ...
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(Texas A&M University, 2006-10-30)Bulk metallic glasses (BMGs) have displayed impressive mechanical properties, but the use and dimensions of material have been limited due to critical cooling rate requirements and low ductility. The application of severe ...
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(2009-05-15)This thesis investigated the microstructure and mechanical property of RRR( high purity) and RG (low purity) niobium (Nb) sheet material. RRR Nb is used in the fabrication RF cavities. Our method involves processing bulk ...
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(2009-05-15)Modified 9Cr-1Mo ferritic-martensitic steel (T91) has been extensively investigated as a structural material for GenIV nuclear reactors and Accelerator Driven Transmutation systems. One attractive characteristic of this ...
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(2009-05-15)The purpose of this work was to study learn about grain refinement mechanisms and texture development in cast n-type Bi90Sb10 alloy caused by severe plastic deformation. The practical objective is to produce a fine grained ...
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(Texas A&M University, 2007-04-25)This research investigated the effectiveness of equal channel angular extrusion (ECAE) and annealing to improve the grain morphology and mechanical properties of electron-beam remelted pure niobium. Extrusions were performed ...
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(2009-05-15)Ultra-fine grained (UFG) materials have attracted considerable interest due to the possibility of achieving simultaneous increase in strength and ductility. Effective use of these materials in engineering applications ...
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(Texas A&M University, 2007-04-25)Ultrafine grained (UFG) and nanocrystalline materials have attracted considerable interest because of their unique mechanical properties as compared with coarse grained conventional materials. The fabrication of relatively ...
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(2012-10-19)Bulk nanocrystalline 304L and 316L austenitic stainless steels (SS) were produced by equal channel angular pressing(ECAP) at elevated temperature. The average grain size achieved in 316L and 304 L SS is ~ 100 nm, and grain ...
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(2017-08-30)In recent years, superconductors have become a topic of great interest in the scientific and industrial communities due to their ability to carry large currents with zero resistivity. Most superconducting wires have a ...
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(2014-08-04)The dramatically increasing demand for energy stimulates scientists all over the world to consider the possible ways to meet future energy needs. The application of atomic energy has been demonstrated to be a reliable, ...
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(Texas A&M University, 2006-10-30)The primary objectives of this study were: (1) to verify the effectiveness of ECAE to induce equal amounts of strain and grain refinement in bars of different cross-sectional areas, (2) to determine the effectiveness of ...
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(2015-04-29)Niobium (Nb) finds application in the fabrication of Nb3Sn superconducting wires for superconducting magnet applications, and SRF cavity applications. These applications need a favorable starting microstructure in precursor ...