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Investigation Of Alloying Effects In Aluminum Dispersion Strengthened With Alsub 2osub 3
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Book Synopsis Investigation of Alloying Effects in Aluminum Dispersion Strengthened with Al$sub 2$O$sub 3$. by :
Download or read book Investigation of Alloying Effects in Aluminum Dispersion Strengthened with Al$sub 2$O$sub 3$. written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two types of alloying elements were investigated to determine if the room-temperature strength could be improved and if, through lowering the oxide content, the high-temperature ductility could be improved. Mg was investigated for its solid solution strengthening in one type alloy. The other type alloy involved further dispersion strengthening through adding Fe, Mo, Zr, Cr, V, and Ti which form highly stable intermetallic compounds with Al. Fabrication techniques were developed which produced uniform and reproducible rods for testing. Prealloyed powders were produced by atomizing the molten alloys and collecting the powders in water. This procedure produced uniform powders with a very fine distribution of the intermetallic compounds. Fabrication into rods then included ball-milling, vacuum hot pressing, vacuum heat treating, and hot extrusion. Mg additions improved strengths up to 200$sup 0$C with little effect above that temperature. Room-temperature tensile strengths up to 77,000 psi were obtained which are comparable to the strengths obtained in conventional aluminum alloys. The additional dispersion strengthening of the intermetallic compounds is additive to that of the oxide from room temperature to 450$sup 0$C. No significant improvements in ductility are obtained by reducing the oxide content since even at very low ball-milling times (id est, low oxide contents) the uniform elongation at 450$sup 0$C is typically 0.5 percent. Good combinations of strength and ductility at 450$sup 0$C were obtained in some of the alloys containing intermetallic compounds with no ball-milling. Typical properties at this temperature were tensile strengths of 7,000 psi, uniform elongation of 3 percent, and total elongation of 35 percent. (21 tables, 33 fig, 43 references) (auth).
Book Synopsis An Investigation of Alloying Effects in Aluminum Dispersion Strengthened with A1203 by : George Larry Copeland
Download or read book An Investigation of Alloying Effects in Aluminum Dispersion Strengthened with A1203 written by George Larry Copeland and published by . This book was released on 1975 with total page 105 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of Alloying Effects in Aluminum Dispersion Strengthened with Al2O3 by :
Download or read book Investigation of Alloying Effects in Aluminum Dispersion Strengthened with Al2O3 written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two types of alloying elements were investigated to determine if the room-temperature strength could be improved and if, through lowering the oxide content, the high-temperature ductility could be improved. Mg was investigated for its solid solution strengthening in one type alloy. The other type alloy involved further dispersion strengthening through adding Fe, Mo, Zr, Cr, V, and Ti which form highly stable intermetallic compounds with Al. Fabrication techniques were developed which produced uniform and reproducible rods for testing. Prealloyed powders were produced by atomizing the molten alloys and collecting the powders in water. This procedure produced uniform powders with a very fine distribution of the intermetallic compounds. Fabrication into rods then included ball-milling, vacuum hot pressing, vacuum heat treating, and hot extrusion. Mg additions improved strengths up to 200°C with little effect above that temperature. Room-temperature tensile strengths up to 77,000 psi were obtained which are comparable to the strengths obtained in conventional aluminum alloys. The additional dispersion strengthening of the intermetallic compounds is additive to that of the oxide from room temperature to 450°C. No significant improvements in ductility are obtained by reducing the oxide content since even at very low ball-milling times (i.e., low oxide contents) the uniform elongation at 450°C is typically 0.5 percent. Good combinations of strength and ductility at 450°C were obtained in some of the alloys containing intermetallic compounds with no ball-milling. Typical properties at this temperature were tensile strengths of 7,000 psi, uniform elongation of 3 percent, and total elongation of 35 percent. (21 tables, 33 fig, 43 references) (auth).
Book Synopsis Effects of Aluminum Additions to Gas Atomized Reaction Synthesis Produced Oxide Dispersion Strengthened Alloys by :
Download or read book Effects of Aluminum Additions to Gas Atomized Reaction Synthesis Produced Oxide Dispersion Strengthened Alloys written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of an aluminum containing ferritic oxide dispersion strengthened (ODS) alloy was investigated. The production method used in this study was gas atomization reaction synthesis (GARS). GARS was chosen over the previously commercial method of mechanical alloying (MA) process due to complications from this process. The alloy compositions was determined from three main components; corrosion resistance, dispersoid formation, and additional elements. A combination of Cr and Al were necessary in order to create a protective oxide in the steam atmosphere that the boiler tubing in the next generation of coal-fired power plants would be exposed to. Hf and Y were chosen as dispersoid forming elements due to their increased thermal stability and potential to avoid decreased strength caused by additions of Al to traditional ODS materials. W was used as an additive due to benefits as a strengthener as well as its benefits for creep rupture time. The final composition chosen for the alloy was Fe-16Cr-12Al-0.9W-0.25Hf-0.2Y at%. The aforementioned alloy, GA-1-198, was created through gas atomization with atomization gas of Ar-300ppm O2. The actual composition created was found to be Fe-15Cr-12.3Al-0.9W-0.24Hf-0.19Y at%. An additional alloy that was nominally the same without the inclusion of aluminum was created as a comparison for the effects on mechanical and corrosion properties. The actual composition of the comparison alloy, GA-1-204, was Fe-16Cr-0Al-0.9W-0.25Hf-0.24Y at%. An investigation on the processing parameters for these alloys was conducted on the GA-1-198 alloy. In order to predict the necessary amount of time for heat treatment, a diffusion study was used to find the diffusion rate of oxygen in cast alloys with similar composition. The diffusion rate was found to be similar to that of other GARS compositions that have been created without the inclusion of aluminum. The effect of heat treatment time was investigated with temperatures of 950°C, 1000°C, 1
Book Synopsis Dispersed Phase Strengthening of Corrosion-resistant Aluminum by : Armour Research Foundation (U.S.)
Download or read book Dispersed Phase Strengthening of Corrosion-resistant Aluminum written by Armour Research Foundation (U.S.) and published by . This book was released on 1960 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: A program in which corrosion-resistant aluminum alloys were dispersion- strengthened by powder metallurgical methods is described. The alloy was obtained in powder form, mixed with hard, stable dispersant powders of Al2O3, AlPO4, SiO2, B4C, and SiC by various methods, compacted, and extruded. Tensile strengths of extruded rods were, in some cases, triple that of the extruded, dispersion-free powder product. Corrosion resistance of these materials was observed to be equivalent to that of the wrought dispersion-free alloy.
Book Synopsis A Survey of Dispersion Strengthening of Metals and Alloys ; [summary Technical Report by : Rointan Framroze Bunshah
Download or read book A Survey of Dispersion Strengthening of Metals and Alloys ; [summary Technical Report written by Rointan Framroze Bunshah and published by . This book was released on 1959 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dispersion Strengthened Aluminum Alloys by : Y.-W. Kim
Download or read book Dispersion Strengthened Aluminum Alloys written by Y.-W. Kim and published by . This book was released on 1988 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dispersion Strengthening of Internally Oxidized Iron-aluminum Alloys by : Mark I. Copeland
Download or read book Dispersion Strengthening of Internally Oxidized Iron-aluminum Alloys written by Mark I. Copeland and published by . This book was released on 1972 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dispersion Strengthening of Metals by : Facundo Rolf Morral
Download or read book Dispersion Strengthening of Metals written by Facundo Rolf Morral and published by . This book was released on 1977 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Investigation of the Strengthening Mechanisms of Dispersion-strengthened Alloys by : Richard J. Murphy
Download or read book Investigation of the Strengthening Mechanisms of Dispersion-strengthened Alloys written by Richard J. Murphy and published by . This book was released on 1962 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: -“
Book Synopsis Dispersion Strengthened Aluminum Alloys by : Young-Won Kim
Download or read book Dispersion Strengthened Aluminum Alloys written by Young-Won Kim and published by . This book was released on 1988 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Study of the Dispersion Strengthened Aluminum Or Sap Type Alloys by : John A. Dromsky
Download or read book A Study of the Dispersion Strengthened Aluminum Or Sap Type Alloys written by John A. Dromsky and published by . This book was released on 1963 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Alloying Additions on the Steady-state Creep Behavior of Dispersion-strengthened Aluminum by : George H. Reynolds
Download or read book The Effect of Alloying Additions on the Steady-state Creep Behavior of Dispersion-strengthened Aluminum written by George H. Reynolds and published by . This book was released on 1970 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electron Microscopic Investigation of Dispersion Strengthening in Aged Aluminum-4 Percent Copper Alloy by : John James Prusak
Download or read book Electron Microscopic Investigation of Dispersion Strengthening in Aged Aluminum-4 Percent Copper Alloy written by John James Prusak and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dispersion Strengthened Lead-aluminum Alloys by : Donald E. Jensen
Download or read book Dispersion Strengthened Lead-aluminum Alloys written by Donald E. Jensen and published by . This book was released on 1963 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Investigation of Producing a Dispersion Hardened Aluminum Alloy from the Liquid State by : Ronald Charley Garrett
Download or read book An Investigation of Producing a Dispersion Hardened Aluminum Alloy from the Liquid State written by Ronald Charley Garrett and published by . This book was released on 1965 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dispersion Strengthened Aluminum Alloys by : Metallurgical Society of AIME Staff
Download or read book Dispersion Strengthened Aluminum Alloys written by Metallurgical Society of AIME Staff and published by . This book was released on with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:
