The tensile strength of porous copper made by the GASAR process

Journal Article · Sun Mar 31 23:00:00 EST 1996 · Acta Materialia

DOI:https://doi.org/10.1016/1359-6454(95)00278-2· OSTI ID:230783

Simone, A E; Gibson, L J ^[1]

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1. Massachusetts Inst. of Tech., Cambridge, MA (United States). Dept. of Civil and Environmental Engineering

Recently, porous metals and ceramics have been made by a novel solid-gas eutectic solidification process (the GASAR process). Control of the direction and rate of cooling and of the pressure of the system allows the control of the size, shape, orientation and volume fraction of the pores. Here the authors describe the microstructure and uniaxial tensile behavior of porous copper made by the GASAR process. The strength of the porous specimens decreases linearly with increasing porosity, as expected for a material with aligned cylindrical pores. The yield strength of the nominally solid specimens is lower than that of the low porosity specimens; this strength anomaly is explained in terms of the degree of constraint on the grains. Finally, the potential for increased mechanical efficiency of materials made by the GASAR process is described.

• OSTI ID: 230783
• Journal Information: Acta Materialia, Journal Name: Acta Materialia Journal Issue: 4 Vol. 44; ISSN XZ504Y; ISSN 1359-6454
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COOLING
COPPER
EUTECTICS
FABRICATION
HYDROGEN
LIQUID METALS
MICROSTRUCTURE
ORIENTATION
PHASE DIAGRAMS
POROSITY
PRESSURE DEPENDENCE
SHAPE
SIZE
SOLIDIFICATION
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
ULTIMATE STRENGTH
YIELD STRENGTH