Download or read book Investigation of Weldability of Hot work Tool Steels written by N. A. Sinclair and published by . This book was released on 1961 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The weldability of 6 hot-work tool steels was investigated to develop optimum welding procedures. Welds were made in sheet and plate with the inert- gas tungsten-arc and inert-gas consumable electr de processes under various welding conditions. Variations in preheat, postheat, and energy input had statistically significant, but practically unimportant, effects on mechanical properties after hardening and tempering. Most mechanical-test failures were initiated in the welds whether or not defects were present. The weld metal retained its heterogeneous microstructure after hardening and tempering even when previously subject to annealing-type heat treatments. Lehigh-restrainttest s udies indicated that hot and cold cracking can occur. Low-temperature cracking can be prevented by increasing the preheat temperature. Large-radius Charpy-impact specimens were found to be more satisfactory than the V-notched specimens for these steels. The high-temperature weld tensile strength at 1000 F was 190,000 psi for an H-11 steel; it was reduced to 156,000 after holding at 1000 F for 24 hours.

Download or read book Investigation of Weldability of Hot work Tool Steels and a Titanium Alloy written by L. A. Luini and published by . This book was released on 1963 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: The weldability of H-11 and D6-AC steels and the B-120VCA titanium alloy was investigated. Vacuum melted and air-melted H-11 steels were compared for both base metal and weldments. The vacuum-melted base metal and weld metal showed higher notch strength and toughness than the air-melted steel.

Download or read book Investigation of Weldability of Hot work Tool Steels written by L. A. Luini and published by . This book was released on 1963 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: The weldability of H-11 and D6-AC steels and the B-120VCA titanium alloy was investigated. Vacuum melted and air-melted H-11 steels were compared for both base metal and weldments. The vacuum-melted base metal and weld metal showed higher notch strength and toughness than the air-melted steel.

Download or read book U S Government Research Reports written by and published by . This book was released on 1964 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Government Research and Development Reports written by and published by . This book was released on 1965 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of the Air Force Materials Research and Development Program written by United States. Wright Air Development Division and published by . This book was released on 1954 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of the Air Force Materials Research and Development Program written by Air Force Materials Laboratory (U.S.) and published by . This book was released on 1964 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical reports published by the Air Force Materials Laboratoy during the period 1 July 1962 - 30 June 1963 are abstracted herein. Reports on reseqrch conducted by the Air Force Materials Laboratory personnel as well as that conducted on contract are included. These reports cover basic and applied research in the materials area being conducted by the Metals and Ceramics Division, Non-metallic Materials Division, Materials Physics Division, Manufacturing Technology Division, and Materials Applications Division of the Air Force Materials Laboratory.

Download or read book ASD Technical Report written by and published by . This book was released on 1962 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1961-07 with total page 1766 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 1966 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Journal of the Iron and Steel Institute written by Iron and Steel Institute and published by . This book was released on 1965 with total page 1050 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes the institute's Proceedings.

Download or read book Catalog of Technical Reports written by United States. Dept. of Commerce. Office of Technical Services and published by . This book was released on with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Materials Research Development and Application written by United States. Air Force. Air Research and Development Command and published by . This book was released on 1958 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Welding High strength Steels written by P. A. Kammer and published by . This book was released on 1966 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent studies of the developments in welding steels with yield strengths greater than 150 ksi have included low-alloy martensitic steels, medium-alloy martensitic steels, nickel maraging steels, and bainitic steels. Only weldments from medium-alloy martensitic steels and nickel maraging steels have mechanical properties approaching those of the base plate without a complete postweld heat treatment. The most serious problem with the other steel is low toughness in the weld fusion zone. Adequate weld metal toughness under conditions of elastic strain can be obtarined over the entire 150 to 225 ksi yield-strength range only if the tungsten-arc welding process is used. Processes with higher deposition rates can produce comparable weld deposits only in the lower portion of the range. Above a yield strength of 200 ksi, 18Ni maraging steel weldments have the best combination of strength and toughness. Below 200 ksi, the HP 9-4-25 medium-alloy martensitic steel and 12Ni maraging steel weldments have nearly equal properties.

Download or read book Technical Symposium Materials Research Development and Application 9 10 July 1958 Statler Hilton Hotel Dallas Texas Technical Papers written by United States. Air Force. Air Research and Development Command and published by . This book was released on 1958 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Keywords Index to U S Government Technical Reports written by United States. Department of Commerce. Office of Technical Services and published by . This book was released on 1962 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Keywords Index to U S Government Technical Reports permuted Title Index written by United States. Department of Commerce. Office of Technical Services and published by . This book was released on 1962 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: