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The Mechanisms Of Dispersion Strengthening And Fracture In Al Based Xdtm Alloys Part 1
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Book Synopsis The Mechanisms of Dispersion Strengthening and Fracture in Al-based XD(tm) Alloys, Part 1 by :
Download or read book The Mechanisms of Dispersion Strengthening and Fracture in Al-based XD(tm) Alloys, Part 1 written by and published by . This book was released on 1990 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of reinforcement size, volume fraction, and matrix deformation behavior on room and elevated temperature strength; the fracture toughness; and the fatigue crack growth rate of metal matrix composites of Al-4(pct)Cu-1.5(pct)Mg with TiB2 were examined. The influence of reinforcement volume fraction was also examined for pure aluminum with TiB2. Higher TiB2 volume fractions increased the tensile yield strength at both room and elevated temperatures, and reduced the elongation to fracture. Tensile tests also indicate that small particles provided a greater increase in strength for a given volume fraction than larger particles, whereas elongation to fracture appeared to be insensitive to reinforcement size. Interparticle spacing appears to be the factor that controls the strength of these alloys, with the exact nature of the dependence relying on the nature of dislocation slip in the matrix (planar vs. diffuse). The isothermal aging response of the precipitation strengthened Al-4(pct)Cu-1.5(pct)Mg alloys was not accelerated by the presence of TiB2. Cold work prior to artificial aging created additional geometrically necessary dislocations which serve as heterogeneous nucleation sites leading to accelerated aging, a finer precipitate size, and an increase in the strength of the alloy.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723446030 Total Pages :154 pages Book Rating :4.4/5 (46 download)
Book Synopsis The Mechanisms of Dispersion Strengthening and Fracture in Al-Based Xd(tm) Alloys, Part 1 by : National Aeronautics and Space Administration (NASA)
Download or read book The Mechanisms of Dispersion Strengthening and Fracture in Al-Based Xd(tm) Alloys, Part 1 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of reinforcement size, volume fraction, and matrix deformation behavior on room and elevated temperature strength; the fracture toughness; and the fatigue crack growth rate of metal matrix composites of Al-4(pct)Cu-1.5(pct)Mg with TiB2 were examined. The influence of reinforcement volume fraction was also examined for pure aluminum with TiB2. Higher TiB2 volume fractions increased the tensile yield strength at both room and elevated temperatures, and reduced the elongation to fracture. Tensile tests also indicate that small particles provided a greater increase in strength for a given volume fraction than larger particles, whereas elongation to fracture appeared to be insensitive to reinforcement size. Interparticle spacing appears to be the factor that controls the strength of these alloys, with the exact nature of the dependence relying on the nature of dislocation slip in the matrix (planar vs. diffuse). The isothermal aging response of the precipitation strengthened Al-4(pct)Cu-1.5(pct)Mg alloys was not accelerated by the presence of TiB2. Cold work prior to artificial aging created additional geometrically necessary dislocations which serve as heterogeneous nucleation sites leading to accelerated aging, a finer precipitate size, and an increase in the strength of the alloy. Aikin, R. M., Jr. Unspecified Center ALUMINUM ALLOYS; CRACK PROPAGATION; CRACKING (FRACTURING); DISPERSION STRENGTHENING; FRACTURE STRENGTH; METAL MATRIX COMPOSITES; TEMPERATURE EFFECTS; AGING (METALLURGY); CONCENTRATION (COMPOSITION); DEFORMATION; ELONGATION; FATIGUE (MATERIALS); ISOTHERMAL PROCESSES; NUCLEATION; PRECIPITATION HARDENING; TENSILE STRENGTH; YIELD STRENGTH...
Book Synopsis The Mechanisms of Dispersion Strengthening and Fracture in Al-based XDTM Alloys by :
Download or read book The Mechanisms of Dispersion Strengthening and Fracture in Al-based XDTM Alloys written by and published by . This book was released on 19?? with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mechanisms of Dispersion Strengthening and Fracture in Al-based XD (TM) Alloys by :
Download or read book The Mechanisms of Dispersion Strengthening and Fracture in Al-based XD (TM) Alloys written by and published by . This book was released on 1990 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Mechanisms of Dispersion Strengthening and Fracture in Al-based XDTM Alloys by : R. M. Aikin
Download or read book The Mechanisms of Dispersion Strengthening and Fracture in Al-based XDTM Alloys written by R. M. Aikin and published by . This book was released on 1990 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722817176 Total Pages :88 pages Book Rating :4.8/5 (171 download)
Book Synopsis The Mechanisms of Dispersion Strengthening and Fracture in Al-Based XD (Tm) Alloys by : National Aeronautics and Space Administration (NASA)
Download or read book The Mechanisms of Dispersion Strengthening and Fracture in Al-Based XD (Tm) Alloys written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-16 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The influence of reinforcement size, volume fraction, and matrix deformation behavior on room and elevated temperature strength, and the fracture toughness of metal matrix composites of both pure aluminum and Al(4 percent)Cu(1.5 percent)Mg with 0 to 15 vol percent TiB2 were examined. Higher TiB2 volume fractions increased the tensile yield strength both at room and elevated temperatures, and reduced the elongation to fracture. Tensile tests also indicate that small particles provided a greater increase in strength for a given volume fraction than larger particles, whereas elongation to fracture appeared to be insensitive to reinforcement size. The fracture toughness of the Al(4 percent)Cu(1.5 percent)Mg alloys decreased rapidly with TiB2 additions of 0 to 5 vol percent and more slowly with TiB2 additions of 5 to 15 vol percent. Fracture toughness appears to be independent of TiB2 particle size. The isothermal-aging response of the precipitation strengthened Al(4 percent)Cu(1.5 percent)Mg alloys was not altered by the presence of TiB2. Aiken, R. M., Jr. Unspecified Center...
Book Synopsis The Mechanisms of Dispersion Strengthening and Fracture in Al-based XD[superscript TM] Alloys by : R. M. Aikin
Download or read book The Mechanisms of Dispersion Strengthening and Fracture in Al-based XD[superscript TM] Alloys written by R. M. Aikin and published by . This book was released on 1990 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Deformation and Fracture of Dispersion Strengthened Alloys by : Gary James Ewell
Download or read book The Deformation and Fracture of Dispersion Strengthened Alloys written by Gary James Ewell and published by . This book was released on 1968 with total page 350 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 The Mechanisms of Dispersion Strengthening in High Temperature Alloys by : Eduard Arzt
Download or read book The Mechanisms of Dispersion Strengthening in High Temperature Alloys written by Eduard Arzt and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physics Briefs written by and published by . This book was released on 1993 with total page 1058 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Micromechanisms of Deformation and Fracture in Ordered Intermetallic Alloys by : Oak Ridge National Laboratory. Metals and Ceramics Division
Download or read book Micromechanisms of Deformation and Fracture in Ordered Intermetallic Alloys written by Oak Ridge National Laboratory. Metals and Ceramics Division and published by . This book was released on 1988 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On the Mechanism of Dispersion Strengthening. (I). Stored Energy Measurement in Dispersion Strengthened Iron. (II). by : Nicholas J. Grant
Download or read book On the Mechanism of Dispersion Strengthening. (I). Stored Energy Measurement in Dispersion Strengthened Iron. (II). written by Nicholas J. Grant and published by . This book was released on 1973 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 alloy series), were prepared by powder blending. After extrusion at a reduction ratio of 6 to 1 at 745C, the alloys were tested for hardness, yield and tensile strength, ductility, and in stress rupture at 650C. In addition to the as-extruded condition, tests were also run on material annealed 10 hours at 650C. On average, all materials responded to the particle size and volume fraction of the dispersoid in the same direction, however, important differences in the extent and rate of the response were observed for both as-extruded and annealed materials, and in terms of metallic, intermetallic, or oxidic dispersions. The oxide dispersed alloys tend to behave as a cold worked copper matrix stabilized by a finely dispersed stable phase which does not interact directly with the matrix. The metallic dispersed alloys tend to behave as real alloys responding both to cold work and the effects of interactions between matrix and dispersoid. In this respect the 'insoluble' Mo dispersoid produces a stronger, more stable alloy than does the 'soluble' Fe dispersoid. (Author).
Book Synopsis Micromechanisms of Deformation and Fracture in Ordered Intermetallic Alloys by :
Download or read book Micromechanisms of Deformation and Fracture in Ordered Intermetallic Alloys written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The stability and mobility of active slip and twin modes in superlattice structures, for both cubic and noncubic crystals, are theoretically investigated based on the energetics and kinetics of dislocation dissociations. The main concept of the force couplet model for the positive temperature dependence of yield and flow stresses is introduced. Two sources of the glide resistance in ordered lattices are the fault dragging mechanism and the cross-slip pinning mechanism. The effective fault energy consists of two terms related to the chemical and mechanical instability of a shear fault (antiphase boundary, superlattice intrinsic stacking fault, or microtwin). Dependence of the yield stress on the orientation and the sense of applied stress stems from the signs and magnitudes of the glide and nonglide stresses. As the effective fault energy is altered by solute segregation and/or high nonglide stress, the two glide resistance mechanisms are affected differently. In Ni3Al and .beta.-CuZn, the major aspects of anomalous yield strength, strain rate sensitivity, in situ deformation transmission electron microscopy observations, microtwinning, and nonstoichiometry effect are discussed in view of the present model. In addition, the order twinning-slip conjugate relationship is identified, in all the superlattice structures considered, which will influence the deformation behavior by viscous glide at high temperatures. 106 refs., 17 figs., 5 tabs.
Book Synopsis Fracture Resistance of Aluminum Alloys by : John Gilbert Kaufman
Download or read book Fracture Resistance of Aluminum Alloys written by John Gilbert Kaufman and published by ASM International. This book was released on 2001 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Kaufman prevents this summary of data on the fracture characteristics of aluminum alloys, broadly based on a publication by Alcoa in 1964, Fracture Characteristics of Aluminum Alloys . Coverage includes tensile properties as indicators of fracture behavior; notched-bar impact and related tests for t
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