Download or read book Evaluation of 2014 6061 Aluminum Alloy Weldments Heat Treated and Aged After Welding written by R. Agricola and published by . This book was released on 1958 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on test results, the following conclusions were reached: For a 99-percent confidence level, the following are the expected design parameters when stops, starts, tacks ground out, and tacks welded over are included: 40,000 psi -- 0.05-in. material; 36,400 psi -- 0.125-in. material; 36,400 psi -- 0.25-in. material; Tensile elongations of 7.5 percent are typical for 0.05- and 0.125-in. material; however, the minimum elongations are 8.5 percent for 0.25-in. material; The recommended heat treatment for the bimetal junction is solution heat treatment at 950 = 10 deg F with a water quench, followed by an aging treatment at 350 = 10 deg F for eight hours, and subsequent cooling in air. The soaking times required for various sheet thicknesses are: 0.032 in., 20 minutes; 0.032-in. but 0.10 in., 45 minutes; and 0.10 in., 60 minutes. (Author).

Download or read book Evaluation of 6061 t6 to 2014 t6 and 6061 t6 to 6061 t6 Aluminum Alloy Welds written by R. Agricola and published by . This book was released on 1959 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: This weld-evaluation program was conducted by simulating the cap-to-skirt weld junction, the cap-toskirt T-weld junction, and the cap-to-outlet weld, and testing and examining these simulated welds for tensile tukon microhardness, and metallographic data. In addition special studies were made of welding under stress, mismatch of material thickness, and weld heat-affected zones. Confidence levels of 99.5%, 99.0%, and 95.0% for design application on fusion-, lap-, and T-welds are included. This report substantiates previous evidence that microcracks will not result from a 2014-T6 to 6061-T6 combination, provided the alloys are fusion- or T-welded and not lap-welded. This report also substantiates the fact that thickness mismatch in similar lap-welded metal junctions does not produce microcracks. Minimum ultimate tensile strength (UTS) data reveal that the use of thinner-than-anticipated dome material may be possible. Data on weld heat-affected zones prove that the heataffected zone of 6061-T6 is greater than that of 2014-T6 and furnish the land widths necessary to restrict heat flow during welding of fusion and lap welds. (Author).

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 684 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1965 with total page 484 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 1962 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Post Weld Heat Treatment of TIG Welded AA6061 Aluminium Alloy written by Goyal Mayur and published by LAP Lambert Academic Publishing. This book was released on 2015-06-23 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: TIG welding is one of the important weld process for the fusion reactor components developement and fabrication.The welding of aluminium is most difficult due to its thermo physical properties like high thermal and electrical conductivity, low melting point and strength. In this, TIG welding parameters welding current and welding speed are used to weld. TIG welded joints are then heat treated by artificial aging and solution treatment to evaluate the influence of PWHT on mechanical properties of AA6061 joints. Tensile strength and impact strength of as TIG welded and heat treated joints is evaluated.

Download or read book U S Government Research Development Reports written by and published by . This book was released on 1965 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1965 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1965 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1972 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government wide Index to Federal Research Development Reports written by and published by . This book was released on 1965 with total page 762 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book British Welding Journal written by and published by . This book was released on 1965 with total page 1046 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1972-10 with total page 1290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Influence of Welding and Heat Treatment on Aluminum Alloys written by Eric B. Hilty and published by . This book was released on 2014 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt: The welding of structural materials, such as aluminum alloys 6063, 6061 and 6005A, does have an adverse influence on the microstructure and mechanical properties at locations immediately adjacent to the weld. The influence of heat input, due to welding and artificial aging, was investigated on aluminum alloy extrusions of 6063, 6061 and 6005A. Uniaxial tensile tests, in conjunction with scanning electron microscopy observations, were done on the: (i) as-provided alloy in the natural temper, (ii) the as-provided alloy artificially aged, (iii) the as-welded alloy in the natural temper, and (iv) the as-welded alloy subject to heat treatment. The welding process used was gas metal arc (GMAW) with spray transfer at approximately 140-220 amps of current at 22-26 volts. The artificial aging used was a precipitation heat treatment for 6 hours at 360oF. The aluminum alloys of the 6XXX series contain magnesium (Mg) and silicone (Si) and are responsive to temperature. Optical microscopy observations revealed the influence of artificial aging to cause change in both size and shape of the second-phase particles present and distributed through the microstructure. The temperature and time of exposure to heat treatment did cause the second-phase particles to both precipitate and migrate through the microstructure resulting in an observable change in strength of the material. Uniaxial tensile tests were conducted for desired specimen thicknesses for sake of comparison. Section 6.4.2-2 of the 2010 Aluminum Design manual discusses provisions for mechanical properties of welded and artificially aged aluminum light poles, fabricated from aluminum alloy 6063 and 6005A. A basis for these provisions was the result of older round-robin testing programs [2, 3]. However, results of the studies were never placed in the open literature. Hence, the focus of this study was to determine the expected mechanical properties of welded and artificially aged 6063, 6061 and 6005A aluminum alloys and publish the results. Tensile tests revealed the welded aluminum alloy to have lower strength, both yield and ultimate tensile strength, when compared to the as-received un-welded counterpart. The impact of post-weld heat treatment on tensile properties and resultant fracture behavior is presented and briefly discussed in light of intrinsic microstructural effects and nature of loading.

Download or read book Process Control evaluation of Alcoa s New Artificial Aging Treatment for 7079 Aluminum Alloy written by W. A. TOKEN and published by . This book was released on 1961 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: The two step aging treatment can be applied immediately after quenching from the solution heat treatment temperature, or after stretching or forming in the 7079-W temper and produce mechanical properties comparable to those obtained using the present aging treatment. This new procedure can be considered as an alternate to the practice described in MIL-H-6088B. Data on time delay between solution heat treatment and artificial aging of 7075 and 7178 is included. Immediate artificial aging of aluminum alloys, 7075 and 7178, does not produce marked differences of mechanical properties as compared with one, five, or ten day delay. (Author).

Download or read book Weldability of High strength Aluminum Alloys written by Robert Melvin Evans and published by . This book was released on 1966 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: This memorandum describes the fusion-welding characteristics, mechanical properties, and stress-corrosion behavior of high-strength, weldable aluminum alloys. These are defined as alloys in which sound welds can be produced and in which at least 50 and 70 percent of the maximum base-metal strength can be retained in the as-welded and post-weld-treated conditions, respectively. Careful selection of joining method and filler metals as well as close control of joining-process parameters is necessary to produce high-strength aluminum weldments. Highest strengths and weld-joint efficiencies in high-strength weldable alloys are achieved with the use of postweld aging and/or mechanical treatments. The best combination of highest strengths and good welding characteristics is found in the 2000 and 7000 alloy series. As compared with the 2000 and 5000 alloy series, the 7000 alloy as a class suffer three major property disadvantages: (1) their tendency to be notch sensitive, (2) their tendency to exhibit low toughness at low temperatures, and (3) their much greater susceptibility to stress-corrosion cracking. Nonetheless, several relatively new 7000 series alloys have been developed which show reasonably good notch toughness to -423 F and which are considered competitive with the 2219 and 2014 alloys for cryogenic applications. (Author).

Download or read book Light Metal Alloys Applications written by Waldemar Alfredo Monteiro and published by BoD – Books on Demand. This book was released on 2014-06-11 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lightweight alloys have become of great importance in engineering for construction of transportation equipment. At present, the metals that serve as the base of the principal light alloys are aluminum and magnesium. One of the most important lightweight alloys are the aluminum alloys in use for several applications (structural components wrought aluminum alloys, parts and plates). However, some casting parts that have low cost of production play important role in aircraft parts. Magnesium and its alloys are among the lightest of all metals and the sixth most abundant metal on earth. Magnesium is ductile and the most machinable of all metals. Many of these light weight alloys have appropriately high strength to warrant their use for structural purposes, and as a result of their use, the total weight of transportation equipment has been considerably decreased.