INVESTIGATION OF THE STRENGTHENING MECHANISMS OF DISPERSION-STRENGTHENED ALLOYS (2005)
MURPHY,RICHARD J., SADAGOPAN,VARADACHARI, GRANT,NICHOLAS J.
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Grant,Nicholas J., Kenagy,Donald, Wolf,Stanley
A group of 42 copper base alloys containing 5 dispersoids (A12O3, SiO2, CoAl, Fe, and Mo) in amounts of 3, 7, and 11 percent, with particle sizes ranging from 0.01 to 25 microns (3 sizes in each...
INVESTIGATION OF THE STRENGTHENING MECHANISMS OF DISPERSION STRENGTHENED ALLOYS. (2005)
Murphy,Richard J., Grant,Nicholas J.
In an effort to produce dispersion-strengthened alloys with more versatile strength properties than those reported for oxide dispersion strengthened systems, the systems Ni-TiC and Ni-TiB2 were...
Structure and Property Control through Rapid Quenching of Liquid Metals. (2005)
Grant,Nicholas J., Pelloux,Regis M. N., Flemings,Merton C., Argon,Ali S.
The report presents the results and accomplishments of the first year of a three year research program investigating the production of solid bars from rapidly quenched liquid metals. Steam...
Amorphous and Metastable Microcrystalline Rapidly Solidified Alloys: Status and Potential. (2002)
Grant,Nicholas J., Cline,Carl F., Davis,Lance A., Kear,Bernard H., Luborsky,Fred E.
The nature, properties, processing, and possible applications of two classes of materials are described: amorphous solids, particularly glassy metals, and metastable microcrystalline alloys. The...
THERMAL CONDUCTIVITY METHOD FOR ANALYSIS OF HYDROGEN IN STEEL (1998)
SHIELDS,BRUCE M., CHIPMAN,JOHN, GRANT,NICHOLAS J.
The low temperature, vacuum tin-fusion method of analysis for H , developed by Carney, Chipman, and Grant (Trans. Am. Inst. Mining Met. Engrs. 188:397, 1950) was modified to permit the analysis of...
HYDROGEN IN STEEL MAKING PRACTICE (1998)
Epstein, Henry, Chipman, John, Grant, Nicholas J.
In cooperation with Bethlehem Steel Co., Pa.
A Preliminary Study of the System Titanium-Aluminum Oxide Extruded Alloys. (1998)
Turillon,Pierre, Grant,Nicholas J.
Rept. on Solid State Research and Properties of Matter.
INVESTIGATION OF FRACTURE IN CONNECTION WITH HOT DEFORMATION PROCESSING OF METALS. (1998)
Grant ,Nicholas J., Bridenbaugh ,Peter, Greene ,Barry, Kane,Robert
Metals and alloys are normally hot worked at temperatures of 0.6 to 0.95 of their melting temperatures, in degrees Absolute, and at strain rates which may vary from as little as 0.1 to 10,000%/sec....
STORED ENERGY IN DISPERSION STRENGTHENED ALLOYS. (1998)
Chin,Lincoln L. J., Grant,Nicholas J.
A high value of stored energy (0.41 cal/g) was determined experimentally to persist in oxide dispersed alloys to high temperatures. This high value of stored energy is related to the retained high...
INVESTIGATION OF FRACTURE IN CONNECTION WITH HOT DEFORMATION PROCESSING OF METALS. (1998)
Grant,Nicholas J., Bridenbaugh,Peter, Greene,Barry, Kane,Robert
Topics included are: Hot plasticity at high strain rates and high temperatures of iron; Deformation and fracture characteristics of Udimet 700 at high strain rates and high temperatures; Deformation...
Structure and Property Control through Rapid Quenching of Liquid Metals. (1998)
Grant,Nicholas J., Pelloux,Regis M. N., Flemings,Merton C., Argon,Ali S.
The first results of the processing of coarse metal powders of maraging 300 and IN 100 are reported. The effect of cooling rates on the dendrite structure of maraging 300 alloy has been investigated...
Structure and Property Control through Rapid Quenching of Liquid Metals. (1998)
Grant,Nicholas J., Pelloux,Regis M. N., Flemings,Merton C., Argon,Ali S.
Various powder metallurgy (P/M) and quench-casting techniques were employed to generate extremely fine dendrite arm spacings and homogeneous structures. Iron, nickel and cobalt-base alloy powders,...
Structure and Property Control through Rapid Quenching of Liquid Metals. (1998)
Grant,Nicholas J., Pelloux,Regis M., Flemings,Merton C., Argon,Ali S.
Various powder metallurgy (P/M) and quench-casting techniques were employed to generate extremely fine dendrite arm spacings and homogeneous structures. Iron, nickel and cobalt-base alloy powders,...
Structure and Property Control through Rapid Quenching of Liquid Metals. (1998)
Grant,Nicholas J., Pelloux,Regis M., Flemings,Merton C., Argon,Ali S.
The processing of billets from rapidly quenched liquid metals was investigated. Various powder metallurgy (P/M) and quench-casting techniques were employed to generate extremely fine dendrite arm...
RESEARCH ON THE ROLE OF STRAIN RATE AND TEMPERATURE IN FATIGUE. (1998)
Grant, Nicholas J., Blucher, Joseph T., Ritter, Donald L.
This study is concerned with the roles of strain rate and temperature on fatigue behavior. For the purposes of the immediate work pure aluminum and an aluminum - 10 percent zinc alloy were selected....
DEFORMATION AND FRACTURE AS A FUNCTION OF STRAIN RATE AT HOT WORKING TEMPERATURES. (1998)
Grant, Nicholas J., Bridenbaugh, Peter, Kane, Robert
The intent of this program, originally, was to determine the role of strain rate and temperature on the hot plasticity of several classes of metals and alloys. The strain rates were comparable to...
Liquid Dynamic Campaction of Fe-Nd-B Permanent Magnets. (1998)
Grant, Nicholas J., O'Handley, R. C., Grant, N. J.
The purpose of this work was to gain an improved understanding of the critical parameters of the rapid solidification process known as Liquid Dynamic Compaction (LDC). This was to be accomplished by...
Research on Creep Structure Characteristics of Titanium and Its Alloys. (1998)
Lunsford,John, Richardson,Lee, Grant,Nicholas J.
Supersedes AD-028 580.
Research on Creep Structure Characteristics of Titanium and Its Alloys. (1998)
Richardson,Lee S., Lunsford,John, Grant,Nicholas J.
Supersedes AD-061 885.
Structure and Properties of Spray Formed Stainless Steel. (1998)
Ucok, Ibrahim, Ando, Teiichi, Grant, Nicholas J.
Spray-deposited 316L stainless steel plates were produced on a water cooled mild steel moving substrate using liquid dynamic compaction; plated which were 4-15 mm thick, 20 cm wide, and of random...
Recent Trends and Developments With Rapidly Solidified Materials. (1998)
Excellent progress is being made in demonstrating the significant improvements in metallic structures and properties through rapid solidification (RS) and rapid solid-state quenching; a number of...
Matsuo, Satoru, Ando, Teiichi, Zody, Michael C., Grant, Nicholas J.
Liquid dynamic compaction (LDC), a rapid solidification spray deposition process, produced grain size refinement in an AISI 1020 steel alloyed with 0.06 wt% Al; the spray deposit showed a fine (10-40...
Duan, Xiaoman, Ando, Teiichi, Grant, Nicholas J.
Aluminum alloy 2024, modified with 2 wt% each of Fe and Ni, was processed by Liquid Dynamic Compaction (LDC); the material displayed high densities (94.9-97.1% of theoretical) and equiaxed grains...
Spray Deposition of AISI 316L Stainless Steel Microalloyed With Aluminum and Nitrogen. (1998)
Ucok, Ibrahim, Ando, Teiichi, Grant, Nicholas J.
This paper reports the spray deposition of AISI 316L stainless steel microalloyed with aluminum and nitrogen to produce fine microstructure. The results indicate that regular liquid dynamic compacted...
Liquid Dynamic Compaction of Metals, A New Processing Science and Technology. (1998)
Rapid solidification (up to 10(9) K/sec for production of fine powders and splats) has led to spray deposition technologies with maximum solidification rates of about 10(3) k/s, but with promise for...
Duan, Xiaoman, Ando, Teiichi, Grant, Nicholas J.
Liquid Dynamic Compaction (LDC), a rapid solidification spray deposition process, was utilized to develop and evaluate a high-strength, high-temperature aluminum alloy 2024-2Fe-2Ni; the as-spray...
It seems appropriate, this year in particular, to acknowledge with much gratitude the tremendous stimulus given to materials research through ARPA support over the past eleven years. There was,...