[논문]The limits of solid state foaming

Elzey, D.M.; Wadley, H.N.G.

doi:10.1016/S1359-6454(00)00395-5

[해외논문] The limits of solid state foaming

Acta materialia, v.49 no.5, 2001년, pp.849 - 859

Elzey, D.M. (To whom all correspondence should be addressed. Tel.: +1-804-982-5796) , Wadley, H.N.G. (fax: +1-804-982-5660)

Abstract ▼ AI-Helper

AbstractUltralight metal foams can be produced by gas expansion in either the molten or solid state by the release of H2 during the decomposition of TiH2 particles. An alternative approach uses a powder metallurgical route to deliberately trap a low solubility gas within interparticle spaces during consolidation. This is subsequently used to plastically expand the voided solid during a post-consolidation heat treatment. Porosities of about 40% have been reported. However this is only about half that of melt-foamed materials and there is much interest in designing processes that increase it. Micromechanical models for the plastic expansion process are developed and used to identify the practical porosity limits in this entrapped gas expansion approach. It is shown that the porosity is limited by the reduction in pore pressure as voids expand, and ultimately by the loss of gas accompanying void coalescence. Increasing the initial pore pressure is shown to also lead to the formation of face sheet delaminations in stiffened, porous core sandwich panels. Its dependence on the process methodology is considered. Achievable porosities during solid state foaming are shown to be limited to less than 50%; much less than that of metals foamed in the liquid state. A simple extension of the analysis to semi-solid state expansion shows that much higher porosities could be achievable under these conditions because void coalescence can be avoided.

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참고문헌 (26)

Ashby 1998 Metal Foams: A Design Guide
Mat. Res. Symp. Proc. Banhart 521 121 1998 10.1557/PROC-521-121 Porous and cellular materials for structural applications

상세보기
Gibson 1997 Cellular Solids: Structure and Properties
Evans 45 1999 Metal Foams and Porous Metal Structures
Mat. Res. Symp. Proc. Shapolov 521 281 1998 Porous and cellular materials for structural applications
Asholt 133 1999 Metal Foams and Porous Metal Structures
Mat. Res. Symp. Proc. Miyoshi 521 133 1998 10.1557/PROC-521-133 Porous and cellular materials for structural applications

상세보기
Int. J. Powd. Met. Kearns 24 1 59 1988
Martin 1991 Advances in Powder Metallurgy
Mat. Res. Symp. Proc. Schwartz 521 121 1998 Porous and cellular materials for structural applications
Met. Trans. Queheillalt A 31 1 261 2000 10.1007/s11661-000-0070-x

상세보기
Zallen 1983 The Physics of Amorphous Solids
Mech. Mater. Duva 3 41 1984 10.1016/0167-6636(84)90013-9

상세보기
Acta Metall. Mater. Duva 40 31 1992 10.1016/0956-7151(92)90196-L

상세보기
J. Appl. Mech. Sofronis 59 S88 1991 10.1115/1.2899512

상세보기
Riedel 149 1985 Flow and Fracture at Elevated Temperatures
Mat. Res. Symp. Proc. Dunand 521 231 1998 10.1557/PROC-521-231 Porous and cellular materials for structural applications

상세보기
J. Mech. Phys. Sol. Rice 17 201 1969 10.1016/0022-5096(69)90033-7

상세보기
Mat. Sci. & Engng. Wilsdorf 59 1 1983 10.1016/0025-5416(83)90085-X

상세보기
Int. J. Frac. Tvergaard 18 237 1982 10.1007/BF00015686

상세보기
J. Mech. Phys. Sol. Ritchie 21 395 1973 10.1016/0022-5096(73)90008-2

상세보기
J. D. Landes, J. A. Begley, in ASTM STP 590, pp. 128-148. American Society for Testing and Materials. Philadelphia, PA, 1976.
J. Mech. Phys. Sol. Hutchinson 16 13 1968 10.1016/0022-5096(68)90014-8

상세보기
Riedel 1987 Fracture at High Temperatures
Riedel 1987 Fracture at High Temperatures
J. Chem. Phys. Scher 53 3759 1970 10.1063/1.1674565

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[해외논문] The limits of solid state foaming

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