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Plane Strain Fracture Toughness Of High Strength Aluminum Alloys
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Book Synopsis The Microstructure and Plane Strain Fracture Toughness of High Strength Aluminum Alloys by : Peter John Guest
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:
Book Synopsis Plane-strain Fracture Toughness of High-strength Aluminum Alloys by : Carl M. Carman
Download or read book Plane-strain Fracture Toughness of High-strength Aluminum Alloys written by Carl M. Carman and published by . This book was released on 1965 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Estimating Plane Strain Fracture Toughness of High Strength Aluminum Alloys from Crack Arrest Toughness by : RC. Dorward
Download or read book Estimating Plane Strain Fracture Toughness of High Strength Aluminum Alloys from Crack Arrest Toughness written by RC. Dorward and published by . This book was released on 1977 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comparison is made between fracture toughness KIc as measured by recommended ASTM procedures and crack arrest toughness KIa as measured on more than 100 bolt-loaded double-cantilever beam (DCB) specimens from 7075, 7050, and 7049 alloy plates. Close agreement was found between the two values, KIa being on the average about 0.75 ksiin. (0.82 MPa?m) lower than than KIc over the range 18 to 29 ksiin. (20 to 32 MPa?m). This indicates that a simplified test based on a bolt-loaded DCB specimen could be used for quality control, lot release, and screening purposes. Measurements of crack length and specimen deflection are all that are required; the specimens do not have to be fatigue precracked, nor is a tensile machine needed.
Book Synopsis Plane-strain Fracture-toughness Data for Selected Metals and Alloys by : James Edward Campbell
Download or read book Plane-strain Fracture-toughness Data for Selected Metals and Alloys written by James Edward Campbell and published by . This book was released on 1969 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report contains the first compilation of available Plane-strain fracture toughness data and is the result of considerable interest during the past few years in developing test methods for obtaining these data. The report is divided into sections on aluminum alloys, high-strength alloy steels, intermediate- and low-strength steels, precipitation-hardening stainless steels, titanium alloys, nickel-base alloy 718, and beryllium.
Book Synopsis Fracture Resistance of Aluminum Alloys by : John Gilbert Kaufman
Download or read book Fracture Resistance of Aluminum Alloys written by John Gilbert Kaufman and published by ASM International. This book was released on 2001-01-01 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Kaufman prevents this summary of data on the fracture characteristics of aluminum alloys, broadly based on a publication by Alcoa in 1964, Fracture Characteristics of Aluminum Alloys. Coverage includes tensile properties as indicators of fracture behavior; notched-bar impact and related tests for toughness; notch toughness and sensitivity; tear resistance; fracture toughness; the interrelation of fracture characteristics; toughness at subzero and elevated temperatures; subcritical crack growth; and metallurgical considerations in fracture resistance. Most of the data is presented in only the English/engineering units, contrary to normal ASM International and Aluminum Association, Inc. policies. The author's credentials are not stated. c. Book News Inc
Book Synopsis Plane Strain Fracture Toughness of Aluminum Alloys at Room and Subzero Temperatures by : JG. Kaufman
Download or read book Plane Strain Fracture Toughness of Aluminum Alloys at Room and Subzero Temperatures written by JG. Kaufman and published by . This book was released on 1971 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plane strain fracture toughness tests have been made at room temperature, -112, and -320 F on plates of six aluminum alloys and tempers: 2014-T651, 2024-T851, 6061-T651, 7075-T651, 7075-T7351, and 7079-T651. The data indicate that the plane strain fracture toughness, KIc, of each of the alloys at the subzero temperatures is as high as or higher than that at room temperature. At -320 F apparently valid values of KIc ranged from 4 (7075-T7351) to 23 percent (2014-T651 and 7075-T651 ) higher than at room temperature. An even larger difference was indicated for 6061-T651 (about 40 percent higher), but the specimens tested at -320 F were not thick enough to satisfy the requirements of ASTM Test E 399 - 70 T. For the alloys of most interest for cryogenic applications, 2014-T651 and 6061-T651, the critical crack sizes at cryogenic temperatures are indicated to be as large as or larger than those at room temperature when evaluated at either a fixed operating stress or a constant percentage of the yield strength.
Book Synopsis Aluminum-Lithium Alloys by : S.P. Lynch
Download or read book Aluminum-Lithium Alloys written by S.P. Lynch and published by Elsevier Inc. Chapters. This book was released on 2013-09-20 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aluminium-Lithium (Al–Li) alloys have been of interest since the 1950s when they were first used on a military aircraft. Having lithium as the main alloying element in Al alloys is attractive since (i) each 1 wt% Li reduces the density by ~3% and increases modulus by ~5%, and (ii) high strengths can be achieved by precipitation-hardening. During the 1980s, extensive research and development was carried out on alloys with high lithium contents (>2 wt%≡~8 at%) such as AA 8090 (Al 2.4 Li 1.2 Cu 0.7 Mg 0.12 Zr) (wt%). The mechanical properties of these ‘second-generation’ Al–Li alloys, however, did not match those of conventional Al (-Zn)-Mg-Cu alloys, and the lower fracture toughness of these alloys (for equivalent strengths was a particular problem. Thus, 2nd generation Al–Li alloys did not see widespread use. The experience with 2nd generation Al–Li alloys led to the development of ‘3rd generation’ alloys with lower Li contents (0.75–1.7 wt%), and some of these alloys have a better overall balance of properties, including fracture toughness, than the best available conventional Al alloys. These 3rd generation Al–Li alloys should therefore see extensive use in future civil and military aircraft. This chapter on fracture toughness and fracture modes of aerospace Al–Li alloys outlines why fracture toughness is important for aerospace structures and components, and summarises testing procedures and terminologies in regard to plane-strain and plane-stress fracture toughness. The relationships between fracture toughness/fracture modes and microstructural features such as grain morphology, constituent particles, impurity phases, matrix precipitates, grain-boundary precipitates, and grain boundary segregation, are then discussed. Proposed explanations for the low fracture toughness of 2nd generation Al–Li alloys, associated with low-energy intergranular and transgranular shear fractures, are discussed in some depth, followed by a summary of the alloy-design principles behind the development of 3rd generation Al–Li alloys with a much improved resistance to low-energy fracture modes. Quantitative data for fracture toughness of 2nd and 3rd generation Al–Li alloys in comparison with conventional Al alloys are provided, showing that 3rd generation Al–Li alloys have outstanding combinations of toughness and strength combined with reduced densities. The superior toughness of 3rd generation Al–Li alloys compared with 2nd generation alloys is reflected in the differences in fracture-surface topography and fracture path. The chapter concludes with a summary of the current and proposed uses of 3rd generation Al–Li alloys in aircraft structures and components
Book Synopsis Strength and Toughness of Materials by : Toshiro Kobayashi
Download or read book Strength and Toughness of Materials written by Toshiro Kobayashi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the shift from the Metal Age progresses, materials engineers and materials scientists seek new analytical and design methods to create stronger and more reliable materials. Based on extensive research and developmental work done at the author’s multi-disciplinary material laboratory, this graduate-level and professional reference addresses the relationship between fracture mechanisms (macroscale) and the microscopic, with the goal of explaining macroscopic fracture behavior based on a microscopic fracture mechanism. A careful fusion of mechanics and materials science, this text and monograph systematically considers an array of materials, from metals through ceramics and polymers, and demonstrates lab-tested strategies to develop desirable high-temperature materials for technological applications.
Book Synopsis Sharply Notch Cylindrical Tension Specimen for Screening Plane-Strain Fracture Toughness. Part I: Influence of Fundamental Testing Variables on Notch Strength. Part II: Applications in Aluminum Alloy Quality Assurance of Fracture Toughness by : WF. Brown
Download or read book Sharply Notch Cylindrical Tension Specimen for Screening Plane-Strain Fracture Toughness. Part I: Influence of Fundamental Testing Variables on Notch Strength. Part II: Applications in Aluminum Alloy Quality Assurance of Fracture Toughness written by WF. Brown and published by . This book was released on 1976 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper is concerned with the use of the sharply notched cylindrical specimen as an index of plane-strain fracture toughness in quality assurance of aluminum alloy products. Specifically, information is presented that relates to the use of the ASTM Tentative Method for Sharp-Notch Tension Testing with Cylindrical Specimens (E 602-76T) in quality assurance programs. The first part of this paper describes the results of an investigation into the influence of fundamental testing variables on the sharp notch strength of several high-strength aluminum alloys. The results indicate that variations in the notch root radius and eccentricity of loading (expressed in terms of the percent bending in a verification specimen) within the range permitted by the Tentative Method can contribute significantly to the scatter observed in relations between the sharp notch to yield strength ratio (NYR) and KIc. The results also show that the upper limit of KIc beyond which the NYR loses useful sensitivity to further increases in KIc decreases with decreasing specimen size (diameter). It appears that the notch strength of the smaller of the two specimens (1⁄2 and 1116 in. diameter; 13 and 27 mm diameter) specified in the Tentative Method will have rather limited application as an index of KIc for the tougher high-strength aluminum alloys. However, the upper limit of 1.3 presently placed on the NYR appears to be overly conservative for high-strength aluminum alloys.
Book Synopsis Review of Developments in Plane Strain Fracture Toughness Testing by :
Download or read book Review of Developments in Plane Strain Fracture Toughness Testing written by and published by ASTM International. This book was released on 2011 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Material Data of High-strength Aluminium Alloys for Durability Evaluation of Structures by : Lüder Schwarmann
Download or read book Material Data of High-strength Aluminium Alloys for Durability Evaluation of Structures written by Lüder Schwarmann and published by . This book was released on 1986 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Standard Practice for Plane-Strain Fracture Toughness Testing of Aluminum Alloys by :
Download or read book Standard Practice for Plane-Strain Fracture Toughness Testing of Aluminum Alloys written by and published by . This book was released on with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plane Strain Fracture Toughness Properties of Three Aluminum Alloys as a Function of Specimen Geometry by : Sidney Davis
Download or read book Plane Strain Fracture Toughness Properties of Three Aluminum Alloys as a Function of Specimen Geometry written by Sidney Davis and published by . This book was released on 1965 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Experimental and Theoretical Investigation of Plane-stress Fracture of 2024-T351 Aluminum Alloy by :
Download or read book An Experimental and Theoretical Investigation of Plane-stress Fracture of 2024-T351 Aluminum Alloy written by and published by . This book was released on 1970 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plane-stress fracture behavior of precracked aluminum alloys.
Book Synopsis Stress-corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys by : Benjamin Floyd Brown
Download or read book Stress-corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys written by Benjamin Floyd Brown and published by . This book was released on 1972 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fracture Characteristics of Several High Strength Aluminum Alloys Using Variable Notch Root Radii by : Joseph H. Mulherin
Download or read book Fracture Characteristics of Several High Strength Aluminum Alloys Using Variable Notch Root Radii written by Joseph H. Mulherin and published by . This book was released on 1964 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A relationship between the stress concentration factor and the fracture toughness parameter was examined for the case of an elliptical hole in an infinite solid. Edge-notched specimens from three high-strength aluminum alloys were tensile loaded to failure. The resulting data from these tests were analyzed, using this relationship. It was indicated that the predicted proportionality between the fracture toughness parameter and the square root of the notch root radius does exist. Further examination of the relationship showed that the fracture occurs at a fixed state of strain within a plastic zone having a size proportional to the original root radius. A departure, however, from the predicted behavior was evident with the introduction of plane strain components at the notch root. This is also discussed. (Author).
Book Synopsis Plane Strain Fracture Toughness of 2219-t87 Aluminum Alloy at Room and Cryogenic Temperatures by : Carl M. CARMAN
Download or read book Plane Strain Fracture Toughness of 2219-t87 Aluminum Alloy at Room and Cryogenic Temperatures written by Carl M. CARMAN and published by . This book was released on 1966 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: The tensile properties and plane strain fracture toughness of 1/2 and 1 inch thick 2219-T87 aluminum alloy were determined as a function of testing at temperatures from room to -423 F. The tensile and yield strengths of this material show a gradual increase as the testing temperature is decreased to -423 F while the elongation and reduction of area remain essentially unchanged. The plane strain fracture toughness of this material is relatively insensitive to testing temperature and shows only a slight increase with decreasing testing temperature. Specimens machined so that the crack propagation is perpendicular to the rolling plane show somewhat higher values of plane strain fracture toughness than when crack propagation is parallel to the rolling plane. The plane strain fracture toughness of the 1 inch thick 2219-T87 aluminum alloy was somewhat lower than that of the 1/2 inch thick plate. Illustrative examples are presented on using these parameters in design. (Author).
