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Author : C. B. Scruby
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (592 download)
Download or read book The influence of microstructure of acoustic emission dwing deformation of aluminium alloys written by C. B. Scruby and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C.B. Scruby
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (898 download)
Download or read book The Influence of Microstructure of Acoustic Emission During Deformation of Aluminium Alloys written by C.B. Scruby and published by . This book was released on 1981 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. B. Scruby
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (353 download)
Download or read book The Influence of Microstructure on Acoustic Emmission During Deformation of Aluminium Alloys written by C. B. Scruby and published by . This book was released on 1981 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : S. McK. Cousland
Publisher :
ISBN 13 : 9780642891020
Total Pages : 26 pages
Book Rating : 4.8/5 (91 download)
Download or read book Acoustic Emission from the Aluminium Alloy 7050 written by S. McK. Cousland and published by . This book was released on 1979 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies of the acoustic emission detected during deformation of the commercial aluminum alloy 7050 are described. Tests have been performed on unflawed tensile specimens and notched specimens of the alloy in a variety of heat-treated conditions. Attempts are made to correlate the detected emission with various microstructural features affecting the deformation of the alloy. (Author).
Author : Nikolaĭ Nikolaevich Buĭnov
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.3/5 (91 download)
Download or read book Effect of Plastic Deformation on Subsequent Decomposition in Aluminum Alloys Al-Si and Al-Mg-Si written by Nikolaĭ Nikolaevich Buĭnov and published by . This book was released on 1953 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of plastic deformation on subsequent decomposition in the alloys Al-Si (1.2 percent Si) and Al-Mg-Si (1.4 percent Mg2Si) was studied with an electron microscope. These alloys were chosen because the first is easily quenched and does not age at room temperature and because in the second no decomposition after quenching and natural aging is detected with the electron microscope (although the properties change). These alloys were chosen also because they could be studied by the oxide-film method. This method was used to study the surface of the samples, which was etched before deformation and aging. It is then possible to observe simultaneously, on the electron photographs, precipitation, the block structure, and those alterations (slip lines, bending of blocks, cracks, etc.) in the submicroscopic structure of the alloys which are caused by deformation.
Author : H N G. Wadley
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (556 download)
Download or read book Acoustic Emission Deformation and Fracture of Aluminium Alloys written by H N G. Wadley and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chang-Shu Jan
Publisher :
ISBN 13 :
Total Pages : 27 pages
Book Rating : 4.:/5 (227 download)
Download or read book Acoustic Emission During Deformation of Lead-Tin Alloys written by Chang-Shu Jan and published by . This book was released on 1974 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acoustic emission measurements were made on lead-tin binary alloys of different compositions during constant-strain-rate tensile tests. The results show that for lead-tin alloys, the chemical composition, microstructure, degree of deformation, and prior mechanical history all affect the acoustic emission to a marked degree.
Download or read book Correlation Between Acoustic Emission and Microstructure. Final Technical Report written by and published by . This book was released on 1977 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Acoustic emission from pure metals undergoing deformation is caused by dislocation unpinning and can be described by a theory which was a modified version of Gilman's mobile dislocation density theory. Acoustic emission from alloys can be dislocation related, but is primarily due to inclusion fracture. Factors affecting this include inclusion size, inclusion density, and the stress state. Inclusions crack more frequently during tensile testing than during fracture toughness testing.
Author : C. B. Scruby
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book The origin of acoustic emission during deformation of aluminium and an aluminium-magnesium alloy written by C. B. Scruby and published by . This book was released on 1980 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1572 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jane Wishart Maclachlan
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (933 download)
Download or read book Influence of the Matrix on Acoustic Emission Due to Inclusion Fracture in 7075-T6 Aluminum Alloy written by Jane Wishart Maclachlan and published by . This book was released on 1983 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (953 download)
Download or read book Effect of Grain Size on the Acoustic Emission Generated During Plastic Deformation of Aluminum written by and published by . This book was released on 1979 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acoustic emission signals from polycrystalline Al 1100 samples during plastic deformation were analyzed with respect to the strain rate and grain size. A kinematic model is proposed to account for the observed behavior. An experimental acoustic emission parameter, equivalent to the average energy of the acoustic events, correlates satisfactorily with the computed energy of moving dislocations during the deformation process. Both energies attain a maximum value for a certain grain size, and are directly dependent on the strain rate.
Author : Rolf Berghammer
Publisher : Cuvillier Verlag
ISBN 13 : 373694831X
Total Pages : 130 pages
Book Rating : 4.7/5 (369 download)
Download or read book Influence of the Precipitation state on the Thermal Stability of Severely Deformed Aluminum Alloys written by Rolf Berghammer and published by Cuvillier Verlag. This book was released on 2014-10-29 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: A promising way to increase the strength of aluminum alloys is by grain refinement. Therefore the production of so-called ultra-fine grained (UFG) microstructures by severe plastic deformation (SPD) is a very interesting topic. One of the most common SPD processes is Equal Channel Angular Pressing (ECAP), which was compared to Confined Channel Die Pressing (CCDP) and cold rolling.In the focus of this work lays on the one hand the influence of different precipitation states on the formation of UFG structures and their influence on the mechanical properties and on the other hand it was examined if the thermal stability of these structures can be improved either by supersaturated solid solution(by impurity drag) or by precipitates (by grain boundary pinning).With a better understanding of the ongoing softening mechanisms a good combination of high strength and good ductility can be achievedby alternating SPD and heat treatment.
Author :
Publisher :
ISBN 13 :
Total Pages : 1650 pages
Book Rating : 4.:/5 (319 download)
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1650 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Thomas R. Bieler
Publisher : Minerals, Metals, & Materials Society
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.3/5 (91 download)
Download or read book Hot Deformation of Aluminum Alloys II written by Thomas R. Bieler and published by Minerals, Metals, & Materials Society. This book was released on 1998 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: These symposium proceedings from the 1998 TMS Fall Meeting examine the relationships between mechanical behavior and microstructural evolution that must be quantified to develop predictive models for hot deformation. Issues addressed include constitutive modeling; process design and modeling; laboratory simulation of large scale hot working processes; the evolution of microstructure; texture, damage, dynamic precipitation, recovery, and recrystallization processes; creep and superplastic deformation; and the ability to predict phenomena such as corrosion and formability after hot deformation.
Author : Jung-Kuei Chang
Publisher :
ISBN 13 :
Total Pages : 248 pages
Book Rating : 4.:/5 (351 download)
Download or read book The Effect of Microstructure on Cavitation During Hot Deformation in Fine-grained AA5083 Aluminum Alloy Sheet Material written by Jung-Kuei Chang and published by . This book was released on 2008 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aluminum alloys are of great interest to the automobile industry for vehicle mass reduction, which improves vehicle performance and reduces emissions. Hot forming processes, such as superplastic forming (SPF) and quick-plastic forming (QPF) have been developed to take advantage of the improved formability of certain aluminum materials at elevated temperature. Commercial fine-grained aluminum alloy AA5083 sheet is the most commonly used material in the SPF and QPF forming processes. Hot formability of AA5083 is often limited by material cavitation during forming, which makes understanding and controlling cavitation an issue of primary importance for improving hot sheet forming processes. The thermomechanical processing history of AA5083 can strongly affect superplastic performance, causing variations in formability between material lots. These variations are closely related to microstructure, and intermetallic particles are prime suspects for controlling cavitation behavior. However, there has been little more than anecdotal evidence available that these particles nucleate or influence cavitation. Interactions between intermetallic particles and cavities were, thus, analyzed using both two-dimensional (2-D) and three-dimensional (3-D) microstructure characterization techniques. Analysis of 3-D microstructures from AA5083 specimens deformed under conditions similar to the SPF and QPF processes provide conclusive proof that cavities form at specific types of intermetallic particles. Differences in cavitation between materials deformed under the SPF and QPF processes result from differences in deformation mechanisms. These differences are illustrated by the formation of filaments on fracture surfaces of superplastically deformed AA5083 specimens, which have been characterized.
Author :
Publisher :
ISBN 13 : 9780429136153
Total Pages : 585 pages
Book Rating : 4.1/5 (361 download)
Download or read book Hot Deformation and Processing of Aluminum Alloys written by and published by . This book was released on 2011 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: PREFACE This book offers readers a fairly comprehensive discussion of the hot working of aluminum and aluminum alloys. It is intended to provide an explanation of the possible microstructural developments that can occur with hot deformation of a variety of alloys and the kind of mechanical properties that can be anticipated. The microstructures that evolve with torsion, compression, extrusion and rolling are presented based on extensive analysis from polarized light optical microscopy (POM), transmission electron microscopy (TEM), x-ray diffraction (XRD) scanning electron-microscopy with electron backscatter imaging (SEM-EBSD) and orientation imaging microscopy (OIM). The microstructural analysis leads to detailed explanations of dynamic recovery (DRV), static recovery (SRV), discontinuous dynamic recrystallization (dDRX), discontinuous static recrystallization (dSRX), grain defining dynamic recovery (gDRV) (formerly geometric dynamic recrystallization gDRX) and continuous dynamic recrystallization involving a single phase (cDRX/1-phase) and multiple phases, (cDRX/2-phase). Hot working is carefully explained in the context of other elevated temperature phenomena, some of which overlap hot working. These include creep, superplasticity, cold working and annealing. Creep plasticity occurs at both warm and hot working temperatures, but is usually associated with lower strain-rates and relatively small strains. On the other hand superplasticity involves high tensile strains at similar temperatures, but lower strain rates than utilized in hot working--
