Paper Titles
Synthesis of Nanocrystalline Tungsten Alloy by Mechanical Alloying and Annealing
p.239
Synthesis of α-Fe2O3 Nanowires and its Magnetic Properties
p.243
The Characteristics of Nickel-Electroplating on Copper Substrate in CO2 Supercritical Fluid
p.247
The Preparation of Spinel Ferrite Nanoparticles Using Precipitation in Water-in-Oil Microemulsions
p.251
The Quasi Static Fracture Behavior of a Bulk Al-Cr-Fe Alloy Made by Consolidating Micron- and Nano-Sized Powders
p.255
Thermodynamic Modeling of Surface Segregation in Au-Ti Nanoparticles
p.259
Thermo-Mechanical Modeling and Analysis of Equal Channel Angular Pressing
p.263
Tribological Characteristics of Nanocrystalline Copper
p.267
Ultrasonic Characterization of Silver Nanoparticles
p.271

The Quasi Static Fracture Behavior of a Bulk Al-Cr-Fe Alloy Made by Consolidating Micron- and Nano-Sized Powders

Article Preview

Abstract:

Micron-sized powders of an Al-7Cr-1Fe alloy were prepared by the technique of Gas Atomization Reaction Synthesis (GARS) at the Ames Laboratory (Ames, Iowa, USA). A pre-alloyed stock of the aluminum alloy was melted and atomized in an inert environment. A mixture of micron-sized and nano-sized powder particles was consolidated in a vacuum environment using the technique of plasma pressure compaction (P2CTM). The powders were initially pulsed at 150oC for 10 minutes and subsequently consolidated at 550oC under a pressure of 40 MPa for 10 minutes. In this paper, the tensile deformation and fracture characteristics of the aluminum alloy are highlighted at two different test temperatures. An attempt is made to elucidate the microscopic mechanisms governing tensile response and fracture in light of the competing and mutually interactive influences of intrinsic microstructural features, deformation characteristics of the constituents of the material, and test temperature.

You might also be interested in these eBooks
Science and Technology of Nanomaterials View Preview

Info:

Periodical:

Journal of Metastable and Nanocrystalline Materials (Volume 23)

Pages:

255-258

DOI:

https://doi.org/10.4028/www.scientific.net/JMNM.23.255

Citation:

Cite this paper

Online since:

January 2005

Authors:

T.S. Srivatsan, S. Givens, Meslet Al-Hajri, M. Petraroli, R. Radhakrishnan, Tangali S. Sudarshan

Keywords:

Consolidation, Fracture, Micron-Sized Powders, Microstructure, Nanoscale Powders, Tensile Properties

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2005 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] Abdelouahab Ziani and Gerard Michot: International Journal of Rapid Solidification, Vol. 9, 19096, pp.305-321.

Google Scholar

[2] CM. Adam: Rapidly Solidified Amorphous and Crystalline Alloys (editors: B.K. Kear, B.C. Giessen and M. Cohen), The Materials Research Society, 1982, p.411.

Google Scholar

[3] W.M. Griffith, R.E. Sanders, Jr., and G. J. Hildeman: in High Strength Powder Metallurgy Aluminum Alloys (editors: M.J. Koczak and G.J. Hildeman) The Metallurgical Society, Warrendale, PA, 1982, p.209.

Google Scholar

[4] R.E. Singer and M.J. Couper: in Advanced Materials Research and Development for Transport: Light Metals 1985 (editors: R.J. H. Wanhill, W.J. Bunk and J.G. Wurm) Les Editions de Physique, Les Ulis, 1986, p.139.

Google Scholar

[5] W.S. Miller and I. G. Palmer in Advanced Materials Research and Development for Transport, Light Metals, 1985 (editors: R.J. H. Wanhill, W.J. G. Bunk and J.G. Wurm) Les Editions de Physique, Les Ulis, 1986, p.117.

Google Scholar

[6] G.J. Marshall and T. Sheppard: Metal Science, Vol. 18, 19894, pp.561-566.

Google Scholar

[7] R. Kalyanaraman, S. Yoo, M.S. Krupashankara, T. S. Sudarshan and R. J. Dowding: NanoStructured Materials, Vol. 10, No. 8, 1998, pp.1379-1392.

DOI: 10.1016/s0965-9773(99)00017-3

Google Scholar

[8] R. Kalyanaraman, S.H. Yoo, M.S. Krupashankara, T. S. Sudarshan and R.J. Dowding: Powder Metallurgy, Vol. 43, No. 4, 2000, pp.380-385.

DOI: 10.1179/003258900666122

Google Scholar

[9] T. S. Srivatsan, B.G. Ravi, A.S. Naruka, M. Petraroli, R. Kalyanaraman, and T. S. Sudarshan: " Materials and Design, Vol. 23, 2002, pp.291-296.

DOI: 10.1016/s0261-3069(01)00078-4

Google Scholar