Download or read book The influence of surface films on mechanical properties written by Heinz G. F. Wilsdorf and published by . This book was released on 1975 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: The variables that influence the mechanical behavior of metals covered with thin films have been enumerated. In particular, factors affecting dislocation glide in the surface region have been characterized in terms of image stresses taking into account both the free surface and the accommodation dislocation network at the substrate-film interface. A reduction of yield stress of 50% or more was measured on copper crystals electro-plated with 600 A films of nickel, gold or alpha-brass, all of which are epitaxial overgrowths. The complexity of the microstructure in the substrate-thin film composite has been described and the consequences on dislocation glide explored. An example of a system which exhibits an increase of the critical resolved yield stress, tau sub y, is given. Here, diffusion layers less than 1 micrometer thick caused tau sub y to increase by a factor of two, a consequence of the hindering of glide dislocations by accommodation dislocation networks.

Download or read book A Study of the Effects of Surface Films on the Mechanical Properties of Metals written by Irvin R. Kramer and published by . This book was released on 1960 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Surface active Agents on the Mechanical Properties of Metals written by I. R. Kramer and published by . This book was released on 1961 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Surfaces and Interfaces II written by John Burke and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 493 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Army Materials and Mechanics Research Center has conducted the Sagamore Army Materials Research Conferences, in cooperation with the Metallurgical Research Laboratories of the Department of Chemical Engineering and Metallurgy of Syracuse University, since 1954. The purpose of the conferences has been to gather together scientists and engineers from academic institutions, industry, and government who are uniquely qualified to explore in depth a subject of importance to the Army, the Department of Defense and the scientific corr.munity. This volume, Surfaces and Interfaces ll: Physical and Mechanical Properties, can be considered a continuation, or perhaps an extension, of the information contained in Surfaces and Interfaces I: Chemical and Physical Characteristics. The emphasis in this volume is focused on: the technological significance of surfaces and interfaces; surface sensitive mechanical properties; environment-sensitive properties; control of grain structure; and composite materials. It is felt that the rather ambitious undertaking of the program committee to place the role of "surfaces and interfaces" in its proper context has been achieved. The balance between basic research findings and more applied research allows the reader a certain degree of latitude in the use of the two volumes. The continued active interest and support of these conferences by Col. C. T. Riordan, Commanding Officer, Dr. E. Scala, Technical Di rector, and J. F. Sullivan, Deputy Technical Director, of the Army Materials and Mechanics Research Center is appreciated.

Download or read book The Effect of Surface active Agents on the Mechanical Properties of Metals The effect of surface removal on the plastic behavior of aluminum single crystals by I R Kramer written by Martin Company and published by . This book was released on 1961 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Thin Organic Surface Films on the Mechanical Properties of Aluminum Single Crystals written by Hsiung Yin and published by . This book was released on 1967 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book THE INFLUENCE OF SURFACE ON THE PROPERTIES OF MATERIALS written by M.J.SINNOTT and published by . This book was released on 1960 with total page 30 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 The Influence of Surface Phenomena on the Mechanical Properties of Structural Materials fatigue of Aluminum in Vacuum written by John L. Ham and published by . This book was released on 1963 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: Techniques were developed for evaluating the fatigue life of metals by reverse bending in con trolled gaseous environments including high vacuum, and bombardment. These techniques were applied to electropolished specimens of commercia lly pure, half hard rolled aluminum sheet. The fatigue life of aluminum in reverse bending at 125 to 140 cycles per second was found to be about seven times longer in vacuum than in wet air and about four times longer in vacuum than in dry air. The cyclic strain causes more surface roughening in vacuum than in air. A hypothesis based on adsorption equilibrium and immunization to cracking by work hardening is proposed to explain the step change in life with pressure. The effectiveness of bombardment is ascribed to prevention of crack contamination by migration of mobile surface gas films. (Author).

Download or read book NBS Special Publication written by and published by . This book was released on 1918 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dimensional Metrology Subject classified with Abstracts Through 1964 written by and published by . This book was released on 1966 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Anodized Surface Films on the Friction Properties of Metals written by Hisashi Nakagawa and published by . This book was released on 1983 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Bureau of Standards Miscellaneous Publication written by and published by . This book was released on 1966 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Surface active Agents on the Mechanical Properties of Metals Part I the Effect of Surface removal on the Plastic Behavior of Aluminum Single Crystals written by and published by . This book was released on 1961 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of the Stability and Ultimate Compressive Strength of Short Sheet stringer Panels with Special Reference to the Influence of the Riveted Connection Between Sheet and Stringer written by Benjamin H. Beam and published by . This book was released on 1955 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalog of Research Projects written by United States. Office of Saline Water and published by . This book was released on 1973 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Miscellaneous Publication National Bureau of Standards written by United States. National Bureau of Standards and published by . This book was released on 1934 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: