The Influence of Grain Refinement and Titanium Alloying Additions on the Mechanical Properties of Beryllium Ingot Sheet PDF Download
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Author: W. Taylor Publisher: ISBN: Category : Languages : en Pages : 155
Book Description
Beryllium ingot sheets having grain sizes as low as 8 microns were made by pack rolling and pack extrusion techniques. Tensile and three point bend properties of these sheets were compared with warm-rolled monolithic ingot sheet. Clear improvements in tensile properties were achieved (65 ksi UTS, 40 ksi Y.S., 23% elongation) in fully recrystallized material, but these improvements were made at the expense of formability. The pack extrusion technique showed promise in achieving grain refinement while restraining texture development. Sheet was also produced from a Be-1% Ti alloy. The alloy demonstrated marked grain refinement compared to unalloyed ingot beryllium; this led to improved tensile properties, but reduced formability was again observed. The ability of titanium beryllide particles to impede dislocation movement was demonstrated, but particle sizes and distributions suitable for dispersion strengthening were not achieved in spite of considerable hot and warm working of the alloy. (Author).
Author: W. Taylor Publisher: ISBN: Category : Languages : en Pages : 155
Book Description
Beryllium ingot sheets having grain sizes as low as 8 microns were made by pack rolling and pack extrusion techniques. Tensile and three point bend properties of these sheets were compared with warm-rolled monolithic ingot sheet. Clear improvements in tensile properties were achieved (65 ksi UTS, 40 ksi Y.S., 23% elongation) in fully recrystallized material, but these improvements were made at the expense of formability. The pack extrusion technique showed promise in achieving grain refinement while restraining texture development. Sheet was also produced from a Be-1% Ti alloy. The alloy demonstrated marked grain refinement compared to unalloyed ingot beryllium; this led to improved tensile properties, but reduced formability was again observed. The ability of titanium beryllide particles to impede dislocation movement was demonstrated, but particle sizes and distributions suitable for dispersion strengthening were not achieved in spite of considerable hot and warm working of the alloy. (Author).
Author: Stanley W. Porembka Publisher: ISBN: Category : Beryllium Languages : en Pages : 14
Book Description
This memorandum deals with the fabrication of beryllium ingot sheet. Until recently, most beryllium products have been fabricated from hot-pressed powder materials. As a result of the development of sound castings of beryllium of sufficient size, beryllium ingot sheet can now be made. The greatest advantage of sheet from cast ingots as compared with sheet from pressed powder is increased formability. However, ingot sheet has lower strength, and work is underway to improve the strength without serious loss of fabricability. The purpose of this summary is to review the casting and fabrication procedures for beryllium ingot and the resulting properties of sheet materials. (Author).
Author: W. Taylor
Author: W. Taylor
Author: A. N. Ashurst
Author: Defense Metals Information Center
Author: Stanley W. Porembka
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Author: F. M. Yans
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Author: N. Maropis