Download or read book Some Aspects of Deformation in Single Crystals and Bicrystals of Aluminum at Elevated Temperature written by Richard H. Bush and published by . This book was released on 1961 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was made to evaluate the kinematics of grain boundary shear and to compare the results pertaining to crystallographic deformation with those reported in the literature. Melt-grown single crystals and bicrystals of high purityAl were tested in tension at extension rates of 8.20 x 10 to the -6th power to 10 to the -4th power cm/sec (strain rates of approximately 2.3 to 230%/hr) and at temperatures of 538 to 650 C. The bicrystal samples contained pure, symmetrical tilt or twist boundaries of 10, 32, 40, 88, and 90 degrees. Continuous stress and total extension and intermittent shear displacement data were obtained as a function of time. A yield point phenomenon which is caused by a small amount of pre-test deformation was observed for single crystals and to a reduced extent for bicrystals. Its presence is explained by a model based upon dislocation multiplication and the stress dependent velocity of dislocations. A yield stress for grain boundary shear which is associated with a thermally activated process was also observed.

Download or read book Some Aspects of Deformation in Single Crystals and Bicrystals of Aluminum at Elevated Temperatures written by RICHARD H. BUSH and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study was made to evaluate the kinematics of grain boundary shear and to compare the results pertaining to crystallographic deformation with those reported in the literature. Melt-grown single crystals and bicrystals of high purityAl were tested in tension at extension rates of 8.20 x 10 to the -6th power to 10 to the -4th power cm/sec (strain rates of approximately 2.3 to 230%/hr) and at temperatures of 538 to 650 C. The bicrystal samples contained pure, symmetrical tilt or twist boundaries of 10, 32, 40, 88, and 90 degrees. Continuous stress and total extension and intermittent shear displacement data were obtained as a function of time. A yield point phenomenon which is caused by a small amount of pre-test deformation was observed for single crystals and to a reduced extent for bicrystals. Its presence is explained by a model based upon dislocation multiplication and the stress dependent velocity of dislocations. A yield stress for grain boundary shear which is associated with a thermally activated process was also observed. (Author).

Download or read book Deformation Processes in Single Crystals and Bicrystals of Aluminum at Elevated Temperatures written by Richard Harding Bush and published by . This book was released on 1963 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of Aluminum Bicrystals at High Temperatures written by Arthur Nelson Lord and published by . This book was released on 1960 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plastic Deformation of Aluminum Single Crystals at Elevated Temperatures written by R. D. Johnson and published by . This book was released on 1955 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of a comprehensive study of plastic deformation of aluminum single crystals over a wide range of temperatures. The results of constant-stress creep tests have been reported for the temperature range from 400 to 900 degrees F. For these tests, a new capacitance-type extensometer was designed. This unit has a range of 0.30 inch over which the sensitivity is very nearly linear and can be varied from as low a sensitivity as is desired to a maxtium of 10 microinches per millivolt with good stability.

Download or read book Crystal Plasticity Finite Element Methods written by Franz Roters and published by John Wiley & Sons. This book was released on 2011-08-04 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by the leading experts in computational materials science, this handy reference concisely reviews the most important aspects of plasticity modeling: constitutive laws, phase transformations, texture methods, continuum approaches and damage mechanisms. As a result, it provides the knowledge needed to avoid failures in critical systems udner mechanical load. With its various application examples to micro- and macrostructure mechanics, this is an invaluable resource for mechanical engineers as well as for researchers wanting to improve on this method and extend its outreach.

Download or read book High Temperature Deformation of Aluminum Single Crystals written by Stephen Henry Howe and published by . This book was released on 1958 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Plastic Deformation of Aluminium Single Crystals at Elevated Temperatures written by R. D. Johnson and published by . This book was released on 1956 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposia written by Defense Documentation Center (U.S.) and published by . This book was released on 1963 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Plastic Deformation of Single Crystals of ga s phase Copper aluminum Alloys written by Joseph Patrick Monaghan and published by . This book was released on 1966 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Rate of Deformation on Intergranular Failure of Aluminum Near the Melting Temperature written by James Richard Cady and published by . This book was released on 1955 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Deformation of Aluminum Alloy Single Crystals written by Narain Shamdas Lalwaney and published by . This book was released on 1966 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Deformation of Aluminium Bicrystals at Elevated Temperatures written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Tensile Deformation of Aluminum Single Crystals at Low Temperatures written by William F. Hosford and published by . This book was released on 1959 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: