Micromechanical Mean-Field Analysis for Stress-Strain Curve of Lotus-Type Porous Iron

Masakazu Tane; Soong Keun Hyun; T. Ichitsubo; Hideo Nakajima

doi:10.4028/www.scientific.net/MSF.486-487.489

Paper Titles

Compressive Properties of Open Cell Aluminum Foams
p.472

Synthesis of Cordierite Using High Energy Ball Milling
p.476

Brazing Al₂O₃ to Kovar Alloy with Ni/Ti/Ni Interlayer and Dramatic Increasing of Joint Strength after Thermal Cycles
p.481

Effect of Operating Temperature on Characteristics of Single-Walled Carbon Nanotubes Gas Sensor
p.485

Micromechanical Mean-Field Analysis for Stress-Strain Curve of Lotus-Type Porous Iron
p.489

Preparation and Properties of Carbon Nanofiber/Polyimide Composite Films
p.493

Thermal Stability and Mechanical Properties of Hydrogenated Zr-Ni-Nb-Co Amorphous Alloy
p.497

Fabrication of Silicon Nitride Ceramics with Electrical Conductivity
p.501

Microwave Dielectric Properties of LTCC Materials Consisting of BaO-TiO₂-SiO₂-Al₂O₃ Glass - BaNd₂Ti₅O₁₄ Ceramic Composites
p.506

HomeMaterials Science ForumMaterials Science Forum Vols. 486-487Micromechanical Mean-Field Analysis for...

Micromechanical Mean-Field Analysis for Stress-Strain Curve of Lotus-Type Porous Iron

Abstract:

We studied the plastic behavior of lotus-type porous iron with unidirectional long cylindrical pores. Lotus-type porous iron with different porosities was fabricated by the continuous zone melting method in a pressurized hydrogen and helium atmosphere. To calculate the stress-strain curves for lotus iron, we applied a modified Qiu-Weng’s micromechanical mean-field theory that has recently been proposed by the present authors [J. Mater. Res., in press], and compared the results with those of compression tests. We experimentally found that the deformation resistance and work hardening rate depend on the sample porosity and loading direction. They decrease with an increase in porosity, and their values in the loading along the direction perpendicular to the longitudinal axis of pores are smaller than those in the parallel-direction loading. Our micromechanical calculations reproduce well the stress-strain curves experimentally obtained and express the experimental trends successfully.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volumes 486-487)

Pages:

489-492

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.486-487.489

Citation:

Cite this paper

Online since:

June 2005

Authors:

Masakazu Tane, Soong Keun Hyun, T. Ichitsubo, Hideo Nakajima

Keywords:

Eshelby's Method, Iron, Mean-Field Theory, Porous Metals, Stress-Strain Curve

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] H. Nakajima, S.K. Hyun, K. Ohashi, K. Ota and K. Murakami: Colloids Surfaces A Vol. 179 (2001), pp.209-214.

Google Scholar

[2] M. Tane, T. Ichitsubo, S.K. Hyun, H. Nakajima and M. Hirao: Acta Mater. Vol. 52 (2004), pp.5195-5201.

DOI: 10.1016/j.actamat.2004.07.030

Google Scholar

[3] L.J. Gibson and M.F. Ashby: Cellular Solids, 2nd ed. (Cambridge University Press, UK 1997).

Google Scholar

[4] Y.P. Qiu and G.J. Weng: J. Appl. Mech. -Trans. ASME Vol. 59 (1992), pp.261-268.

Google Scholar

[5] T. Mori and K. Tanaka: Acta Metall. Vol. 21 (1973), pp.571-574.

Google Scholar

[6] J.D. Eshelby: Proc. Roy. Soc. London Vol. A241 (1957), pp.376-396.

Google Scholar

[7] M. Tane, T. Ichitsubo, S. K Hyun and H. Nakajima: J. Mater. Res., in press.

Google Scholar

[8] H. Nakajima, T. Ikeda and S.K. Hyun: Adv. Eng. Mater. Vol. 6 (2004), pp.377-384.

Google Scholar

[9] M.L. Dunn and H. Ledbetter: Acta Mater. Vol. 45 (1997), pp.3327-3340.

Google Scholar

[10] Y. Benveniste: Mech. Mater. Vol. 6 (1987), pp.147-157.

Google Scholar

[11] T. Ichitsubo, M. Tane, H. Ogi, M. Hirao, T. Ikeda and H. Nakajima: Acta Mater. Vol. 50 (2002), pp.4105-4115.

DOI: 10.1016/s1359-6454(02)00228-8

Google Scholar

[12] R. Hill: Proc. Phys. Soc. London Vol. A65 (1952), pp.349-354.

Google Scholar

[13] G. Simmons and H. Wang: Single Crystal Elastic Constants and Calculated Aggregate Properties: A HANDBOOK. 2nd ed. (The M.I.T. Press, Cambridge 1971). 0. 200. 150. 100. 050. 00 True strain, ε 1: p=0 2: p=0. 246 3: p=0. 483 (b) ⊥ to pore 1 2 3 R=1 R=2 R=8 500 400 300 200 100 0 True stress, σ (MPa) 0. 200. 150. 100. 050. 00 True strain, ε 1: p=0 2: p=0. 236 3: p=0. 476 (a) / to pore 1 2 3.

Google Scholar