Processing and mechanical properties of pure mg and in situ aln reinforced mg 5al composite 3

... mechanochemical milling Synthesis of Mg- 5wt%Al reinforced with 1wt% of in- situ formed AlN via mechanical milling and power metallurgy techniques Study of microstructures and mechanical properties of Mg MMCs ... combination of strength and ductility of the nc Mg composite Introduction Grain refinement, reinforcement particles, dislocation and solid sol...

Ngày tải lên: 14/09/2015, 14:10

... recovery during milling was confirmed by the corresponding low internal strain The internal strain during milling showed inverse grain size dependence Absence of dislocations within the grains of as ... Crystalline Grain boundary Triple line Quadruple node Intercrystalline 0.6 0.4 0 .2 0.0 10 100 1000 G rain S ize (nm ) Figure 2. 6 Plot of volume fractions of crystalline and inter...

Ngày tải lên: 14/09/2015, 14:10

... JIM 34 (19 93) 952-959 Y Ogino, S Murayama, T Yamasaki, J Less-Common Met 168 (1991) 221- 235 67 In- situ formation of Aluminium Nitride composite powder 27 28 29 30 31 32 33 34 35 36 37 38 39 40 ... evidence of weak and broad AlN peaks The proportion of AlN in the powder increased with further milling Higher and distinct AlN peaks indicating higher 51 In-...

Ngày tải lên: 14/09/2015, 14:10

... resistivity of Mg- 5Al- 1AlN composite sample and pure Mg samples 4. 3.3 Thermal properties From Table 4. 3 and Fig 4. 8, the same trend of αc and Mg is observed for both composite and pure Mg samples Milling ... as AlN and in- situ formed Al1 2Mg1 7, MgH2, MgAl2O4, and MgO during sintering and extrusion Such stable grain structure with no grain gro...

Ngày tải lên: 14/09/2015, 14:10

... [ 15] and Wang et al [ 35] A ctivation v o lum e (b ) 300 Mg- 5Al- 1AlN Mg 30 40 250 200 150 100 50 0 10 20 M illing du ratio n (h) Figure 5. 8 Apparent activation volume of composite and pure Mg ... Fig 5. 5 and Table 5. 2, as in the composite samples, 0h-MMed samples show similar ductility of 8-10% and yield stress ranging from 122 to 138 MPa indicating insign...

Ngày tải lên: 14/09/2015, 14:11

... fraction of second phase constituents, since the Mg grain size is in nanoscale and thus less likely for the reinforcement and in- situ formed particles to exist in the interior of the Mg grain, this ... meaning defined previously Using the parameters for Mg in Table 6. 2, a theoretical value of Dgb is predicted to be 3.7410-28 m2 s-1 However, Qgb value in Table 6...

Ngày tải lên: 14/09/2015, 14:11

... 40h-MMed pure Mg samples This finding implies that the grain refinement to a certain length scale diminishes the significance of solid solution strengthening and dispersion hardening 30hMMed composite ... examination can be performed on the pure Mg samples to confirm the diminishing effect of reinforcements (insitu formed second phase particles and/ or ex -situ reinforcement...

Ngày tải lên: 14/09/2015, 14:11

... doi:10.1186/1749-799X-5-58 Cite this article as: Dewan et al.: Assessing mechanical integrity of spinal fusion by in situ endochondral osteoinduction in the murine model Journal of Orthopaedic Surgery and Research 2010 ... deal of variability in the quality of fusions, not detected by the existing fusion detection techniques The induction of bon...

Ngày tải lên: 20/06/2014, 04:20

... doi:10.1186/1749-799X-5-58 Cite this article as: Dewan et al.: Assessing mechanical integrity of spinal fusion by in situ endochondral osteoinduction in the murine model Journal of Orthopaedic Surgery and Research 2010 ... deal of variability in the quality of fusions, not detected by the existing fusion detection techniques The induction of bon...

Ngày tải lên: 20/06/2014, 07:20

... performance characteristics and mechanical properties of bamboo Dissertation, Chinese Academy of Forestry, Beijing, China pp 147 Yusoff, M.N.M, A Abd.Kadir, and A.H Mohamed 1992 Utilization of bamboo ... the physical properties of pulp [Tamolong 1967; Zamuco et al 1969] Aging of a bamboo culm influences physical, chemical, and mechanical properties, and...

Ngày tải lên: 22/02/2014, 09:20

... range of conditions The goal of this manuscript is to provide a detailed understanding of the heart as a muscular pump and of the interaction between the heart and the vasculature The concepts of ... Cardiac Physiology Page of 23 MECHANICAL PROPERTIES OF THE HEART AND ITS INTERACTION WITH THE VASCULAR SYSTEM Daniel Burkhoff MD PhD, Ass...

Ngày tải lên: 22/02/2014, 09:20

... TECHNISCHE UNIVERSITEIT EINDHOVEN Klompen, Edwin T.J Mechanical properties of solid polymers : constitutive modelling of long and short term behaviour / by Edwin T.J Klompen - Eindhoven : Technische ... line is the response to a constant stress Mechanical properties of solid polymers Constitutive modelling of long and short term behaviour PR...

Ngày tải lên: 09/03/2014, 00:20

... Library of Congress Cataloging-In-Publitation Date Nielsen Lawrence E Mechanical properties of polymers and composites / Lawrence E Nielsen Robert F Landel — 2nd ed., rev and expanded p cm — (Mechanical ... IN THE UNITED STATES OF AMERICA MECHANICAL PROPERTIES OF POLYMERS AND COMPOSITES SECOND EDITION,REVISED AND EXPANDED LAWRENCE E .NIELSEN Monsanto Comp...

Ngày tải lên: 22/03/2014, 12:20

... Library of Congress Cataloging-In-Publitation Date Nielsen Lawrence E Mechanical properties of polymers and composites / Lawrence E Nielsen Robert F Landel — 2nd ed., rev and expanded p cm — (Mechanical ... IN THE UNITED STATES OF AMERICA MECHANICAL PROPERTIES OF POLYMERS AND COMPOSITES SECOND EDITION,REVISED AND EXPANDED LAWRENCE E .NIELSEN Monsanto Comp...

Ngày tải lên: 22/03/2014, 13:20