Download or read book Effect of Tempering and Stress relieving Treatments on the Mechanical Properties of Hy 80 and 5ni cr mo v Production Steels written by S. J. Manganello and published by . This book was released on 1964 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although most plates for submarine hulls are not normally stress-relieved, highly deformed hull plates are stress-relieved and plates for other applications may require stress relieving. Therefore, a study was initiated to determine the effect of stress relieving for times up to 125 hours in the temperature range 950 to 1050 F on the properties of quenched and tempered plates of the 5Ni-Cr-Mo-V experimental HY-130/150 steel. In addition, the effect of tempering for similar times and temperatures on the properties of quenched plates was determined. For comparison, similar studies were conducted on an open-hearth and on an electric-furnace HY-80 steel. The tempering study showed that the 5Ni-Cr-Mo-V steel was more resistant to softening during long-time tempering than the HY-80 steels and that its Charpy V-notch energy absorption in the yieldstrength range 130 to 150 ksi was higher than those of the HY-80 steels. (Author).
Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 908 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 1964 with total page 2180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aerospace Structural Metals Handbook written by and published by . This book was released on 1989 with total page 778 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Study of Temper Embrittlement During Stress Relieving of 5Ni Cr Mo V Steels written by L. F. Porter and published by . This book was released on 1968 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive studies of the effect of alloying elements and residual elements on the susceptibility of Ni-Cr-Mo-V steels to temper embrittlement have led to the selection and evaluation of a preferred composition for a weldable quenched and tempered plate steel that is resistant to temper embrittlement during stress relieving. The embrittling effects of carbon, manganese, nickel, chromium, and molybdenum were determined in a statistically selected series of 27 composition modifications of a 5Ni-Cr-Mo-V steel. In addition, the effects of vanadium contents up to 0.19 per cent were investigated. The results of these studies showed that manganese and molybdenum were alloying elements primarily responsible for temper embrittlement in the steel. The effect of the residual elements phosphorus, aluminum, nitrogen, and oxygen on the susceptibility of 5Ni-Cr-Mo-V steel to temper embrittlement was determined. This study showed that although oxygen was detrimental to the notch toughness of the steels, only phosphorus contributed to temper embrittlement. On the basis of the preceding studies, a quenched and tempered plate steel with minimum susceptibility to temper embrittlement was selected; this composition exhibited good weldability and sufficient hardenability for 4-in.-thick plates. An 80-ton heat of this composition was produced, and the susceptibility of this steel to embrittlement during stress-relieving treatments was compared with that of a standard-composition 5Ni-Cr-Mo-V steel. The two steels were compared with and without 1 per cent prestrain. The modified-composition 5Ni-Cr-Mo-V steel exhibited about half the embrittlement of the standard composition. Embrittlement increased as the stress-relieving time increased and as the cooling rate from the stress-relieving temperature decreased. Prestraining produced no significant changes in the response of the steels to embrittlement.
Download or read book Stress Relief Embrittlement of High Strength Quenched and Tempered Alloy Steels written by W. H. Asche and published by . This book was released on 1968 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was undertaken of the time-temperature-embrittlement relationships of two high-strength quenched and tempered steels. Optimum stress-relief treatments were developed which incorporate the maximum reduction in residual stress accompanied by the minimum increase in transition temperature. It was determined that stress-relief embrittlement in Steel A (5Ni-Cr-Mo-V, 140 ksi yield strength) is most severe in the 900 to 1000 F temperature range, and that Steel B (3Ni-Cr-Mo, 100 ksi yield strength) is not significantly embrittled by stress relief. The optimum stress-relief treatments for Steels A and B are obtained by heat treatment at as high a stressrelieving temperature as possible. The maximum stress-relieving temperature is limited to that which will not result in loss of yield strength.
Download or read book Metals Abstracts written by and published by . This book was released on 1971 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Austenitizing and Tempering on the Mechanical Properties of Fully Quenched Hy 80 Steels written by A. R. WILLNER and published by . This book was released on 1961 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of austenitizing, tempering temperatures times on fully quenched low- and high-chemistry HY-80 steels were investigated. Correlation procedures were established for relating notch-brittleness properties to tensile strength for a given Charpy V-notch fibrous fracture appearance. The results indicate that Charpy V-notch transition temperatures increase with increasing austenitizing and decreasing tempering temperatures. For fully quenched HY-80 steels, the optimum Charpy V-notch impact fibrous transition temperatures are attained for the 100,000psi-yield-strength level.
Download or read book Effect of Tempering on the Strength Hardness and Notch Toughness of Hy 130 150 5ni cr mo v Steel written by W. H. Asche and published by . This book was released on 1966 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effect of tempering in the range of 900 to 1150 F on the tensile propeties, hardness, and Charpy V-notch toughness of HY-130/150, 5Ni-Cr-Mo-V steel was investigated. The investigation confirmed high tempering resistance claimed for the steel. The strength and hardness properties were found to be similar over a tempering range of 900 to 1050 F. The notch toughness, however, increased with increasing tempering temperature. (Author).
Download or read book Effects of Tempering Above the Lower Critical Temperature a Sub C1 on the Properties of an Hy 80 Steel written by Abner R. Willner and published by . This book was released on 1966 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of tempering above the critical transformation temperature on the microstructure, notch-toughness and mechanical properties of HY-80 steel was investigated. The formation of alpha ferrite and prime martensite after tempering above the lower critical temperature and quenching will result in mechanical properties that fall below the requirements of the HY- 80 specification. Retempering to achieve minimum yield strengths may result in nonuniform yield strength distribution. The possibility of underbead cracking due to alloy segregation is also discussed.
Download or read book Aerospace Structural Metals Handbook written by Belfour Stulen, Inc. Mechanical Properties Data Center and published by . This book was released on 1970 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat Treatment and Properties of Iron and Steel written by Samuel Jacob Rosenberg and published by . This book was released on 1966 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heat treatment of Steel written by Erik Oberg and published by . This book was released on 1914 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Heat Treatment on the Mechanical Properties of 1 Per Cent Carbon Steel written by Herbert James French and published by . This book was released on 1922 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Melting and Processing Variables on the Mechanical Properties of Steel written by George V. Smith and published by . This book was released on 1977 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effects of Various Heat Treatments on the Mechanical Properties of QT 35 and HY 80 Steels written by A. R. Willner and published by . This book was released on 1964 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rapid Heat Treatment of 5ni cr mo v Steel written by R. P. Haak and published by . This book was released on 1964 with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because a previous study showed that the yield strength and toughness of conventionally quenched and tempered steels would be significantly improved by rapid austenitizing, a statistically designed program was initiated to evaluate rapidheat-treatment variables. The effect of prior microstructure (as-rolled and as-quenched), heating rate (2, 10, and 200 F per second), number of austenitizing passes (1 and 5), peak austenitizing temperature (1400, 1550, and 1700 F), holding time at peak temperature (10 to 15 and 50 to 70 seconds), and tempering temperature (untempered, 400, 700, and 1000 F) on the mechanical properties of the 5Ni-Cr-Mo-V experimental HY130/150 steel were determined and compared with those of conventionally heat-treated 5Ni-Cr-Mo-V steel. The statistical analysis of the data predicted that the 5Ni-Cr-Mo-V steel will exhibit a yield strength of 185 ksi, a tensile strength of 204 ksi, an elongation of 17%, a reduction of area of 68 percent, and a Charpy energy absorption at 80 F of 70 ft-lb when as-rolled material is rapidly austenitized 5 times at 200 F per second to a peak temperature of 1400 F, water-quenched, and conventionally tempered at 360 F. (Author).
