Download or read book Plane Strain Fracture Toughness and Mechanical Properties of 5Al 2 5Sn ELI and Commerical Titanium Alloys at Room and Cryogenic Temperatures written by CM. Carman and published by . This book was released on 1968 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was performed to determine the engineering properties and plane strain fracture toughness characteristics at cryogenic temperatures for 1⁄4, 1⁄2, and 1-in.-thick plates of 5Al-2.5Sn ELI (extra low interstitial) and commercial grade titanium alloys. These results were then translated into design information data applicable to liquid-fueled rocket booster tanks for service at -320 and -423 F. The tensile properties of these materials were determined at room temperature, -110 F, -320 F, and -423 F using small round tension specimens. The plane strain fracture toughness was determined using an instrumented precracked bend specimen. The dimensions of these specimens were such that the criterion (crack length and specimen thickness are equal to 2.5 (KIc/?ys)2) was met at testing temperatures of -320 and -423 F. These data may be considered valid values of plane strain fracture toughness. The commercial 5Al-2.5Sn titanium alloy gave values of KIc of approximately 25,000 and 24,000 psi ? in. at testing temperatures of -320 and -423 F, respectively. On the other hand, the 5Al-2.5Sn ELI titanium alloy gave values of KIc of 65,000 and 55,000 psi ?in. at these testing temperatures, respectively. These data show a superiority of approximately 1.5 in terms of critical crack size for the ELI grade. The relative level of texture hardening in this material was estimated by measuring the R values of these plates. The predicted biaxial yield strength of tanks fabricated from this material was compared with experimental data.
Download or read book Applications Related Phenomena in Titanium Alloys Stp 432 written by American Society for Testing and Materials and published by ASTM International. This book was released on 1968-04 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plane Strain Fracture Toughness and Mechanical Properties of 5a1 2 5sn Eli Titanium at Room and Cryogenic Temperatures written by Carl M. CARMAN and published by . This book was released on 1966 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: The suitability of 5Al-2.5Sn ELI titanium alloy for cryogenic tankage applications was studied by determining the mechanical and fracture properties of the material at testing temperatures ranging from room temperature to -423F. Small round tensile specimens were developed to measure the tensile properties over the range of testing temperatures. Plane strain fracture toughness measurements were also made at these temperatures using the 'pop-in' technique with a small notched bend specimen. Special laboratory techniques were developed to test the specimens at -423F, utilizing the specific heat of vaporization of liquid helium. The degree of preferred orientation in this alloy was qualitatively studied by determining the ratio of the width strain to the thickness strain. The fracture toughness values were interpreted in terms of the crystallography and mechanism of deformation of titanium. The data are summarized in terms of a part-through defect which will be stable at various operating temperatures and stress levels. It has been shown that texture hardening may be used to obtain high burst stresses under biaxial stress conditions. (Author).
Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1968 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plane Strain Fracture Toughness and Mechanical Properties of Ti 5Al 2 5Sn ELI Titanium Alloy and 2219 T87 Aluminum Alloy Weldments for Cryogenic Applications written by C. M. Carman and published by . This book was released on 1970 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applications Related Phenomena in Titanium Alloys written by ASTM Committee B-10 on Reactive and Refractory Metals and Alloys and published by . This book was released on 1968 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Texture Strengthening and Fracture Toughness of Titanium Alloy Sheet at Room and Cryogenic Temperatures written by Timothy L. Sullivan and published by . This book was released on 1968 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fracture Toughness of High strength Materials Theory and Practice written by and published by . This book was released on 1970 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fracture Toughness Testing at Cryogenic Temperatures written by and published by ASTM International. This book was released on 1971 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1972 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fracture Toughness Testing at Cryogenic Temperatures written by Kaufman JG. and published by ASTM International. This book was released on 1971 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toughness and Fracture Behavior of Titanium written by R. G. Broadwell and published by ASTM International. This book was released on 1978 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fracture Data for Materials at Cryogenic Temperatures written by William E. Witzell and published by . This book was released on 1967 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Six potential aerospace alloys were evaluated for toughness at liquid hydrogen temperature ( -423 deg F). They were: Titanium 5Al-2.5Sn (ELI), Titanium 6Al-4V (ELI), INCO 718 (aged) nickel alloy, Aluminum X2021-T8 E31, Aluminum 2219-T81, and Aluminum 7039-T64. The first four materials were 0.063-inch thick; the last two were 0.125-inch thick. Sufficient specimens were manufactured to evaluate all of the alloys at four test temperatures, namely: room temperature, -110 deg F, -320 deg F, and -423 deg F. Tensile, notched tensile, center notched and single edge notch tests were performed at -423 deg F for all alloys. In addition, the INCO 718 and X2021 aluminum alloys were investigated at the three other temperatures. An attempt was made to obtain both plane stress and plane strain fracture toughness data from the same center notched specimen. Except for the titanium alloys, the net fracture stress exceeded 80 percent of the yield strength for all alloys and test temperatures. In all cases, the net stress at pop-in was well below the yield strength of the material.
Download or read book Behavior of Ti 5Al 2 5Sn ELI Titanium Alloy Sheet Parent and Weld Metal in the Presence of Cracks at 20 K written by Timothy L. Sullivan and published by . This book was released on 1971 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through- and surface-cracked specimens of two thicknesses were tested in uniaxial tension. Surface-cracked specimens were generally found to be stronger than through-cracked specimens with the same crack length. Apparent surface-crack fracture toughness calculated using the Anderson modified Irwin equation remained relatively constant for cracks as deep as 90 percent of the sheet thickness. Subcritical growth of surface cracks was investigated. Comparison of chamber and open air welds showed chamber welds to be slightly tougher. Both methods produced welds with toughness that compared favorably with that of the parent metal. Weld efficiencies were above 94 percent.
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.
Download or read book Texture Strengthening and Fracture Toughness of Titanium Alloy Sheet at Room and Cryogenic Temperatures written by TL. Sullivan and published by . This book was released on 1968 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biaxial yield strengths as high as 1.53 times uniaxial yield strength were obtained from burst tests of 6-in.-diameter cylindrical pressure vessels (1 to 2 stress field) fabricated from two textured titanium alloys, Ti-4Al-0.2O and Ti-5Al-2.5Sn ELI. Material nominally 0.020 in. thick was tested at 70, -320, and -423 F. While the Ti-4Al-0.2O alloy generally had superior biaxial smooth properties at the three test temperatures, the Ti-5Al-2.5Sn ELI alloy exhibited less notch sensitivity at-320 and -423 F. It is demonstrated that plastic Poisson's ratio obtained from a uniaxial test could be used to characterize the degree of texture in the two alloys and provide a means for predicting biaxial strengthening.
Download or read book Uniaxial and Biaxial Fracture Toughness of Extra low interstitial 5A1 2 5Sn Titanium Alloy Sheet 15 20 K written by Timothy L. Sullivan and published by . This book was released on 1967 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
