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Author : Kimberli Jones
Publisher :
ISBN 13 :
Total Pages : 556 pages
Book Rating : 4.:/5 (565 download)
Download or read book Effect of Microstructure on Pit-to-crack Transition of 7075-T6 Aluminum Alloy written by Kimberli Jones and published by . This book was released on 2004 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kimberli Jones
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (125 download)
Download or read book Effect of Microstructure on Pit-to-Crack Transition of 7075-T6 Aluminum Alloy written by Kimberli Jones and published by . This book was released on 2006 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this research was to gain an increased understanding of how microstructure influences pit growth, pit-to-crack transition, and critical crack propagation to fracture. Two thicknesses of 7075-T6 aluminum alloy were etched and subjected to corrosion fatigue in a 3.5 % sodium chloride environment. 7075-T6 aluminum alloy is of particular interest to the aging aircraft community, as this alloy has been used extensively on wing and fuselage structures for both military and commercial aircraft in the past. Testing was interrupted at various intervals to obtain information on pit generation, growth, and potential cracking. Results indicated that microstructure has a significant influence on pit-to-crack transition and fatigue crack propagation. Short cracks (
Author : C. M. Hudson
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (31 download)
Download or read book Effect of Stress Ratio on Fatigue-crack Growth in 7075-T6 and 2024-T3 Aluminum-alloy Specimens written by C. M. Hudson and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stress ratio effects on fatigue crack growth in sheet aluminum alloys.
Author : G. Geschwind
Publisher :
ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effect of Microstructure and Environment on Stress Corrosion of 7075 Aluminum Alloy written by G. Geschwind and published by . This book was released on 1973 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain boundary microstructure as well as the pH in a chloride ion solution environment was found to be significant to stress corrosion attack in 7075 aluminum alloys. The influence of these factors on both the initiation and propagation of cracking and the mode of attack in these alloys are described. Microstructural modifications to attain desirable stress corrosion resistance are suggested.
Author : Eric M. Hunt (2ND LT, USAF)
Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.:/5 (864 download)
Download or read book Crack Initiation and Growth Behavior at Corrosion Pit in 7075-T6 High Strength Aluminum Alloy written by Eric M. Hunt (2ND LT, USAF) and published by . This book was released on 2013 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mehmet Fatih Oktem
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (66 download)
Download or read book Pit Morphology and Effect of Prior Pitting Corrosion on Fatigue Life in 7075-T6 and 7075-T6 Extruded Aluminum Alloys written by Mehmet Fatih Oktem and published by . This book was released on 2005 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. A. M. Chandra Prasad
Publisher :
ISBN 13 : 9781956861259
Total Pages : 0 pages
Book Rating : 4.8/5 (612 download)
Download or read book A Fracture Mechanics Study of Corrosion Fatigue written by R. A. M. Chandra Prasad and published by . This book was released on 2022-09-26 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Majority of industrial components fail due to the conjoint actions of fatigue and corrosion. All fatigue failures including one in air can be categorized as corrosion fatigue. Absolute fatigue can take place only in vacuum or inert environment. The effect of corrosion on fatigue has been extensively studied by determining the stress vs. number of cycles (S-N) curve. S-N curve depicts the final fracture, it does not separate the crack initiation and crack propagation. The defect tolerant design based on fracture mechanics concepts assumes that some forms of defects are already present in the materials and a considerable life in spent in crack propagation before the final fracture. Measure of resistance of a material to crack growth (fracture toughness) then becomes extremely important. It is now possible to describe material property of fracture toughness in terms of applied intensity of stress near the crack tip (K). Fracture mechanics based on elastic material behavior (absence of significant yielding) , referred to as the linear elastic fracture mechanics (LEFM) is well suited to materials which have limited ductility. The stress intensity factor (K ) is used both for conditions of static loading (Stress Corrosion Cracking) and for the moving cracks during fatigue loading . In this book the results of corrosion fatigue crack growth on 7075 - Alclad alloy are presented. This alloy is widely used in aircraft and automobile industries. Corrosion resistance is obtained by cladding with a more corrosion resistant aluminum alloy. However, the corrosion protection system may undergo rupture especially during crack growth in the underlying metal. Environment will then play a dominant role in the crack growth process. The design of reliable aircraft structures requires provision that cracks do not propagate under cyclic loading to reach a critical size resulting in fracture. The understanding of crack propagation under the conjoint action of corrosion and fatigue is thus of great technological and economic significance. Conflicting observations have been reported in literature regarding the influence of microstructure and environmental variables on the corrosion crack propagation rates.
Author :
Publisher :
ISBN 13 :
Total Pages : 848 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tuong Tom Quang Vu
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (485 download)
Download or read book The Impact of Corrosion on Fatigue Crack Propagation in 7075-T6 Aluminum Alloy written by Tuong Tom Quang Vu and published by . This book was released on 1999 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Michael Hudson
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.:/5 (31 download)
Download or read book Effect of Specimen Thickness on Fatigue-crack-growth Behavior and Fracture Toughness of 7075-T6 and 7178-T6 Aluminum Alloys written by Charles Michael Hudson and published by . This book was released on 1973 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C. Michael Hudson
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (249 download)
Download or read book Effect of Stress Ratio on Fatigue-crack Growth in 7075-T6 and 2024-T3 Aluminum-alloy Specimens written by C. Michael Hudson and published by . This book was released on 1969 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Hood
Publisher :
ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.:/5 (854 download)
Download or read book The Effect of Overloads on Fatigue Crack Growth in 7075-T6 Aluminum written by Richard Hood and published by . This book was released on 1981 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sachin R. Shinde
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.:/5 (62 download)
Download or read book A Study of Fretting Fatique Damage Transition to Cracking in 7075-T6 Aluminum Alloy written by Sachin R. Shinde and published by . This book was released on 2005 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter John Guest
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.:/5 (29 download)
Download or read book The Microstructure and Plane Strain Fracture Toughness of High Strength Aluminum Alloys written by Peter John Guest and published by . This book was released on 1967 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William G. King (Jr)
Publisher :
ISBN 13 : 9781109791884
Total Pages : 158 pages
Book Rating : 4.7/5 (918 download)
Download or read book Critical Corrosion Pit Depth for Fatigue Crack Initiation in 2024-T3, 6061-T6 and 7075-T6 Aluminum Alloys written by William G. King (Jr) and published by . This book was released on 2006 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: Scope and method of study. Study the effects of corrosion pitting of 2024-T3, 6061-T6 and 7075-T6 aluminum alloys in 1.6 mm (0.063 inch) sheet thickness and determine the critical pit depth required for a fatigue crack to initiate. The corrosion pitting was accomplished using a 3.5% NaCl solution with hydrogen peroxide added as an accelerant. The pitting specimens were fatigue cycled in one-way bending until failure and the cycles to failure recorded. The specimens were examined with a metallurgical microscope, using the focus method of ASTM G46 to determine pitting depth.
Author :
Publisher : Elsevier
ISBN 13 : 0444527877
Total Pages : 3652 pages
Book Rating : 4.4/5 (445 download)
Download or read book Shreir's Corrosion written by and published by Elsevier. This book was released on 2009-02-27 with total page 3652 pages. Available in PDF, EPUB and Kindle. Book excerpt: This four-volume reference work builds upon the success of past editions of Elsevier’s Corrosion title (by Shreir, Jarman, and Burstein), covering the range of innovations and applications that have emerged in the years since its publication. Developed in partnership with experts from the Corrosion and Protection Centre at the University of Manchester, Shreir’s Corrosion meets the research and productivity needs of engineers, consultants, and researchers alike. Incorporates coverage of all aspects of the corrosion phenomenon, from the science behind corrosion of metallic and non-metallic materials in liquids and gases to the management of corrosion in specific industries and applications Features cutting-edge topics such as medical applications, metal matrix composites, and corrosion modeling Covers the benefits and limitations of techniques from scanning probes to electrochemical noise and impedance spectroscopy
Author :
Publisher :
ISBN 13 :
Total Pages : 115 pages
Book Rating : 4.:/5 (227 download)
Download or read book Effect of Microstructure on 7XXX Aluminum Alloy Fatigue Crack Growth Behavior Down to Near-Threshold Rates written by and published by . This book was released on 1981 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: This investigation was undertaken to clarify the role of microstructure on steady state (constant load amplitude) and transient (single periodic overload) fatigue crack growth behavior in 7XXX aluminum alloys at low stress intensity factor ranges (delta K). These results were consolidated with data in the literature to obtain an understanding of microstructural effects on crack growth response over a broad delta K range. Constant load amplitude data show that there are significant differences in near-threshold FCG resistance among 7XXX alloys. Overaging to a T7 temper reduces low delta K FCG resistance greatly, whereas intermediate and high delta K FCG resistance is increased by overaging. In the presence of moisture at intermediate delta K levels, increasing Cu content from 1.0 to 2.3% increases crack growth resistance. However, there is no consistent effect of Cu content on near-threshold fatigue performance. Similarly, no clear influence of dispersoid type (Cr vs. Zr) on low delta K FCG resistance was detected. Increasing alloy purity (lowering Fe, Si content) enhances crack growth resistance at high delta K, but has no effect at near-threshold stress intensities. The importance of near-threshold FCG performance to alloy design and materials selection for fatigue resistance is discussed. Potential tradeoffs between design philosophies which emphasize damage tolerance characteristics vs. those which focus on improved life cycle economics are examined.
