X-Ray Fluorescence Analysis of High-Temperature Super Alloys — Calibration and Standards

1973 ◽  
Vol 17 ◽  
pp. 309-317 ◽  
Author(s):  
K. F. J. Heinrich ◽  
S. D. Rasberry
Keyword(s):  
High Temperature ◽  
Fluorescence Analysis ◽  
Calibration Procedure ◽  
The Past ◽  
Nickel Chromium ◽  
Iron Nickel ◽  
The Given ◽  
Analytical Errors ◽  
Calibration Equations ◽  
Correction Equations

AbstractThe current experimental work extends our calibration concept of separating the effects of absorption and fluorescence to the high - temperature superalloys. The new calibration procedure produces calibration equations which are valid over wide ranges of composition — a feature which is useful in the analysis of high - temperature superalloys . For the specimens considered, the elements iron, nickel, chromium, cobalt and molybdenum can be present at levels greater than 10%; while tantalum, aluminum, titanium, manganese, silicon and vanadium may be present at levels between 1 and 6%. The calibration for this group of alloys has required, in the past, a large number of standards; the number is reduced by judicious application of the given correction equations. Analytical errors can be limited to 1 to 2% in the use of this method.

TOPHET-D

Alloy Digest ◽  
1967 ◽  
Vol 16 (1) ◽  
Keyword(s):  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Electric Furnace ◽  
Heat Treating ◽  
Chromium Alloy ◽  
Furnace Heating ◽  
Nickel Chromium ◽  
Temperature Performance ◽  
Iron Nickel

Abstract Tophet-D is an iron-nickel-chromium alloy recommended for electric furnace heating elements and electrical resistors operating up to 1600 F. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, and machining. Filing Code: Fe-30. Producer or source: Wilbur B. Driver Company.

ALLEGHENY A-286

Alloy Digest ◽  
1966 ◽  
Vol 15 (9) ◽  
Keyword(s):  
Fracture Toughness ◽  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
High Strength ◽  
Heat Treating ◽  
Chromium Alloy ◽  
Nickel Chromium ◽  
Temperature Performance ◽  
Iron Nickel

Abstract ALLEGHENY A-286 is an austenitic iron-nickel-chromium alloy designed for service up to 1300 F where high strength and corrosion resistance are required, and for service at higher temperatures where the applications are for lower stresses. It is an age-hardenable alloy. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-4. Producer or source: Allegheny Ludlum Corporation. Originally published December 1952, revised September 1966.

X-Ray Fluorescence Analysis of Welding Fume Particles

1981 ◽  
Vol 25 ◽  
pp. 209-212
Author(s):  
Thomas P. Carsey
Keyword(s):  
Membrane Filter ◽  
Industrial Hygiene ◽  
Fluorescence Analysis ◽  
Welding Fume ◽  
Small Particles ◽  
X Ray ◽  
Nickel Chromium ◽  
Iron Nickel ◽  
Low Mass ◽  
Metal Flux

The technique of x-ray fluorescence is ideal for the analysis of metal fumes such as are produced in various welding and brazing operations. Although the constitution of welding and brazing fumes is dependent on the nature of the base metal, flux, and welding material used, they typically contain the oxides of iron, nickel, chromium, and manganese (stainless steel welding). The fumes are in the form of very small particles, usually 1.0 um, and are often agglomerated into long chains. Filter samples of these fumes, as are used in industrial hygiene monitoring, may contain 30-300 ug/filter of particles on one surface of a low-mass, 37-mm membrane filter.

HAYNES ALLOY No. 556

Alloy Digest ◽  
1987 ◽  
Vol 36 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Cobalt Alloy ◽  
Nickel Chromium ◽  
Temperature Performance ◽  
Iron Nickel ◽  
Haynes Alloy

Abstract HAYNES Alloy No. 556 is an iron-nickel-chromium-cobalt alloy that combines effective resistance to sulfidizing, carburizing and chlorine-bearing environments with excellent strength and oxidation resistance at high temperatures. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, and joining. Filing Code: Fe-76. Producer or source: Haynes International Inc..

INCONEL ALLOY MA 754

Alloy Digest ◽  
1990 ◽  
Vol 39 (3) ◽  
Keyword(s):  
High Temperature ◽  
Oxide Dispersion Strengthened ◽  
Chromium Alloy ◽  
Microstructural Stability ◽  
High Melting Point ◽  
Inconel Alloy ◽  
The Past ◽  
Nickel Chromium ◽  
Cast Alloys ◽  
Service Environments

Abstract Inconel alloy MA 754 is an oxide-dispersion-strengthened nickel-chromium alloy produced by mechanical alloying. It offers the advantages of a wrought high-temperature material in service environments where only cast alloys could be used in the past. Its strength in conjunction with its high melting point and microstructural stability makes it an attractive alloy for extreme service applications. This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming. Filing Code: Ni-244. Producer or source: Inco Alloys International Inc.. Originally published May 1977, revised March 1990.

PYROMET A-286

Alloy Digest ◽  
1977 ◽  
Vol 26 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Operating Temperature ◽  
High Strength ◽  
Heat Treating ◽  
Chromium Alloy ◽  
Jet Engines ◽  
Nickel Chromium ◽  
Iron Nickel ◽  
High Temperature Components

Abstract PYROMET A-286 is an age-hardenable austenitic iron-nickel-chromium alloy designed for service up to 1300 F (704 C) on jobs requiring high strength and good corrosion resistance at the operating temperature. It offers high ductility in notched sections. Pyromet A-286 is used in jet engines and superchargers for various high-temperature components. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-340. Producer or source: Carpenter.

Albumins as Embedding Media for Electron Microscopy

1969 ◽  
Vol 27 ◽  
pp. 422-423 ◽  
Author(s):  
J. L. Farrant ◽  
J. D. McLean
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
High Temperature ◽  
Biological Material ◽  
Globular Proteins ◽  
The Past ◽  
Antibody Staining ◽  
Thin Sectioning ◽  
Embedding Medium

For electron microscope techniques such as ferritin-labeled antibody staining it would be advantageous to have available a simple means of thin sectioning biological material without subjecting it to lipid solvents, impregnation with plastic monomers and their subsequent polymerization. With this aim in view we have re-examined the use of protein as an embedding medium. Gelatin which has been used in the past is not very satisfactory both because of its fibrous nature and the high temperature necessary to keep its solutions fluid. We have found that globular proteins such as the serum and egg albumins can be cross-linked so as to yield blocks which are suitable for ultrathin sectioning.

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