Freeman, J. W.
Most widely held works by J. W Freeman
The mechanical properties of inconel 718 sheet alloy at 800°, 1000°, and 1200° F by T. M Cullen ( Book )
2 editions published in 1965 in English and held by 15 libraries worldwide
Sensitivity of the creep-rupture properties of nickel-base superalloy sheet to sharp edge-notches in the temperature range of 1000 ̊- 1400 ̊F by Davis J Wilson ( Book )
1 edition published in 1969 in English and held by 13 libraries worldwide
The mechanical properties at 800, ̊ 1000,̊ and 1200 ̊F of two superalloys under consideration for use in the supersonic transport by T. M Cullen ( Book )
1 edition published in 1964 in English and held by 13 libraries worldwide
Relations between microstructure and creep-rupture properties of nickel-base alloys as revealed by overtemperature exposures by John P Rowe ( Book )
1 edition published in 1962 in English and held by 10 libraries worldwide
Vacuum-induction, vacuum-arc, and air-induction melting of a complex heat-resistant alloy by Raymond Frank Decker ( Book )
2 editions published in 1959 in English and held by 9 libraries worldwide
The relative hot-workability and creep-rupture properties at 1600 F of a complex 55Ni-20Cr-15Co-4Mo-3Ti-3Al alloy were evaluated for vacuum-induction, vacuum-arc, and air-induction melting. A limited study of the role of oxygen and nitrogen and the structural effects in the alloy associated with the melting process was carried out. The results showed that the level of boron and or zirconium was far more influential on properties than the melting method. Vacuum melting did reduce corner cracking and improve surface during hot-rolling. It also resulted in more uniform properties within heats. The creep-rupture properties were slightly superior in vacuum heats at low boron plus zirconium or in heats with zirconium. There was little advantage at high boron levels and air heats were superior at high levels of boron plus zirconium. Vacuum heats also had fewer oxide and carbonitride inclusions although this was a function of the opportunity for separation of the inclusions from high oxygen plus nitrogen heats. The removal of phosphorous by vacuum melting was not found to be related to properties. Oxygen plus nitrogen appeared to increase ductility in creep-rupture tests suggesting that vacuum melting removes unidentified elements detrimental to ductility. Oxides and carbonitrides in themselves did not initiate microcracks. Carbonitrides in the grain boundaries of air heats did initiate microcracks. The role of microcracking from this source and as a function of oxygen and nitrogen content was not clear. Oxygen and nitrogen did intensify corner cracking during hot-rolling but were not responsible for poor surface which resulted from rolling heats melted in air.
South Park and the Alpine Pass by J. W Freeman ( Book )
3 editions published in 1896 in English and held by 8 libraries worldwide
High-resolution autoradiography by George C Towe ( Book )
3 editions published between 1954 and 1955 in English and held by 4 libraries worldwide
Autoradiography has been used only to a rather limited extent in metallurgical studies. Probably the major deterring factor has been that the autoradiographic systems have not provided the high resolution required in many investigations. A general discussion of the requirements for high-resolution autoradiography is presented in this report including detecting layer as well as radioactive-sample specifications. The need for a thin photographic emulsion in close contact with the metal surface is emphasized. The desirability of using favorable radiation (e.g., low-energy beta radioactivity) is also discussed.
Fundamental effects of aging on creep properties of solution-treated low-carbon N-155 alloy by D. N Frey ( Book )
4 editions published between 1949 and 1950 in English and held by 4 libraries worldwide
An experimental procedure is described which is believed suitable for establishing the fundamental mechanisms by which processing, heat treatment, and chemical composition control the properties of alloys at high temperature. The method relates microstructures and x-ray diffraction characteristics after various prior treatments to creep and rupture test properties.
The story of a famous expedition : the narrative of Fremont's retreat from the San Luis Valley by Thomas E Breckenridge ( Book )
1 edition published in 1896 in English and held by 4 libraries worldwide
Influence of hot-working conditions on high-temperature properties of a heat-resistant alloy by John F Ewing ( Book )
4 editions published between 1956 and 1957 in English and held by 3 libraries worldwide
The relationships between conditions of hot-working and properties at high temperatures and the influence of the hot-working on response to heat treatment were investigated for an alloy containing nominally 20 percent chromium, 20 percent nickel, 20 percent cobalt, 3 percent molybdenum, 2 percent tungsten, and 1 percent colunbium. Commercially produced bar stock was solution treated at 2,200 degrees F to minimize prior history effects and then rolled at temperatures of 2,200, 2,100, 2,000, 1,800, and 1,600 degrees F. Working was carried out at constant temperature and with incremental decreases in temperature simulating a falling temperature during hot-working. Tn addition, a few special repeated cyclic conditions involving a small reduction at a high temperature followed by a small reduction at a low temperature were used to study the possibility of inducing very low strengths by the extensive precipitation accompanying such procedures. Most of the rolling was done in open passes with a few check tests being made with closed passes. Reductions up to 40 percent were used, with some conditions carried to as high as 65 percent. Heat treatments at both 2,050 and 2,200 degrees F subsequent to working were used to study the influence on response to heat treatment.
Mechanism of beneficial effects of boron and zirconium on creep-rupture properties of a complex heat-resistant alloy by R. F Decker ( Book )
3 editions published in 1958 in English and held by 3 libraries worldwide
The mechanism by which the addition of boron and zirconium improves the creep-rupture properties of an alloy of 55 percent nickel, 20 percent chromium, 15 percent cobalt, 4 percent molybdenum, 3 percent titanium, and 3 percent aluminum was investigated at 1,600 degrees F. Materials with varying boron and zfrconium content were exposed to creep conditions, and then the microstructures were analyzed electron microscopy, electron diffraction, microfractography, and hardness measurements. Interrupted creep tests that allowed comparisons of materials after equivalent creep exposures were particularly useful.
Effect of overheating on creep-rupture properties of M-252 alloy by John P Rowe ( Book )
2 editions published in 1958 in English and held by 3 libraries worldwide
A study was carried out of the influence of periodic overheats of 2-minute duration to temperatures of 1,650, 1,800, 1,900, and 2,000 degrees F on the creep-rupture properties of M-252 alloy at 1,500 degrees F. The conditions of the experiments had been selected to provide basic information applicable to estimation of the effects of overheating on creep-rupture performance of gas-turbine parts. The overheats were conducted both with the stress removed during overheating and with stress present.
The mechanical properties at 800 [degrees], 1000 [degrees], and 1200 [degrees] F of two superalloys under consideration for use in th supersonic transport by T. M Cullen ( Book )
1 edition published in 1964 in English and held by 3 libraries worldwide
Proceedings and documents in the contested election case of Baker vs. Freeman by Nathan Baker ( Book )
1 edition published in 1863 in English and held by 3 libraries worldwide
Physical Data on Certain Alloys for High Temperature Applications ( Book )
2 editions published in 1943 in English and held by 2 libraries worldwide
A metallurgical investigation of two turbosupercharger discs of 19-9DL alloy by E. E Reynolds ( Book )
2 editions published in 1948 in English and held by 2 libraries worldwide
Two turbosupercharger discs of 19-9DL alloy were tested to determine the properties at room temperature and 1200 degrees F of this material in forgings of the size used in servic. Both discs were given hot-cold-working treatments at 1300 to 1350 degrees F, but one was solution-treated and the other left in the as-forged condtion. Because the number of specimens were limited, General Electric Company data are included. Rupture strengths at 1200 degrees F were good. Benefits of hot-cold-work on rupture strengths at 1200 degrees F were not retained at 1350 degrees F; rupture test ductility was very low; the discs had fair uniformity of properties; and the properties compared favorably with those of bar stock. There was no appreciable difference in properties between the two forgings.
A Metallurgical investigation of two contour-forged gas-turbine discs of 19-9DL alloy by J. W Freeman ( Book )
2 editions published in 1948 in English and held by 2 libraries worldwide
One-fourth sections of discs of 19-9DL alloy were tested to determine the level of properties developed in large contour forgings of the alloy, to evaluate the effect of the temperature of hot-cold-work in these large forgings, and to show the degree to which the properties of bar stock could be reproduced in large forgings. Analysis of data indicated that when processed under similar conditions the properties of 19-9DL bar stock are reproduced quite well in the large forgings. The relative properties of the discs of 19-9DL and discs of other alloys depended on the heat treatment and hot-cold-work during forging as well as on chemical composition.
Fundamental effects of cold-working on creep properties of low-carbon N-155 alloy by D. N Frey ( Book )
2 editions published in 1951 in English and held by 2 libraries worldwide
Effects of cold-working under various conditions on the creep resistance at 1200 degrees F and on the internal structure of low-carbon N-155 were determined in part by microscopic examination and x-ray diffraction. Effects of annealing at various times and temperatures on creep resistance and internal structure of the cold-worked samples were also partially evaluated. Cold-working was found to improve the creep resistance of this alloy by the introduction of residual elastic stresses into the lattice. These stresses acted to prevent the movement of fundamental creep flow units.
High-Resolution Autoradiography ( Book )
2 editions published between 1954 and 1955 in Undetermined and English and held by 2 libraries worldwide
Sensitivity of the creep-rupture properties of waspaloy sheet to sharp-edged notches in the temperature range of 1000 to 1400 f ( Book )
1 edition published in 1971 in English and held by 2 libraries worldwide
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