Characteristics of individual impact craters on selected aluminum alloys

James R. Keiser; R. Scott Heidersbach; Donald L. Dobbs; Warren C. Oliver

doi:10.1016/0043-1648(88)90237-2

Characteristics of individual impact craters on selected aluminum alloys

James R. Keiser, R. Scott Heidersbach, Donald L. Dobbs, Warren C. Oliver

Corrosion Science & Technology

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

When an erosive particle impacts the surface of a target, an appreciable amount of energy is deposited in the deformed region. The deformation generally causes strain hardening of the surface but local heating, that is manifested as melting or softening of the surface, has been reported. To assess the effect of individual impacts on the surface of a target, a series of aluminum alloys were impacted by tungsten carbide spheres, 343 /gmm in diameter, at 28.5 m s^-1 and 30° incidence angle. A mechanical properties microprobe was used to measure the hardness of the crater bottoms and the material just below the surface of the craters. Strain hardening was observed in these materials but there was no evidence of softening.

Original language	English
Pages (from-to)	105-118
Number of pages	14
Journal	Wear
Volume	124
Issue number	1
DOIs	https://doi.org/10.1016/0043-1648(88)90237-2
State	Published - May 16 1988

Funding

*Research sponsored by the U.S. Department of Energy AR&TD Fossil Energy Materials Program under contract DE-AC05-840R21400 with Martin Marietta Energy Systems, Inc.

Funders	Funder number
U.S. Department of Energy AR&TD Fossil Energy Materials Program	DE-AC05-840R21400

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10.1016/0043-1648(88)90237-2

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title = "Characteristics of individual impact craters on selected aluminum alloys",

abstract = "When an erosive particle impacts the surface of a target, an appreciable amount of energy is deposited in the deformed region. The deformation generally causes strain hardening of the surface but local heating, that is manifested as melting or softening of the surface, has been reported. To assess the effect of individual impacts on the surface of a target, a series of aluminum alloys were impacted by tungsten carbide spheres, 343 /gmm in diameter, at 28.5 m s-1 and 30° incidence angle. A mechanical properties microprobe was used to measure the hardness of the crater bottoms and the material just below the surface of the craters. Strain hardening was observed in these materials but there was no evidence of softening.",

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AU - Keiser, James R.

AU - Heidersbach, R. Scott

AU - Dobbs, Donald L.

AU - Oliver, Warren C.

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N2 - When an erosive particle impacts the surface of a target, an appreciable amount of energy is deposited in the deformed region. The deformation generally causes strain hardening of the surface but local heating, that is manifested as melting or softening of the surface, has been reported. To assess the effect of individual impacts on the surface of a target, a series of aluminum alloys were impacted by tungsten carbide spheres, 343 /gmm in diameter, at 28.5 m s-1 and 30° incidence angle. A mechanical properties microprobe was used to measure the hardness of the crater bottoms and the material just below the surface of the craters. Strain hardening was observed in these materials but there was no evidence of softening.

AB - When an erosive particle impacts the surface of a target, an appreciable amount of energy is deposited in the deformed region. The deformation generally causes strain hardening of the surface but local heating, that is manifested as melting or softening of the surface, has been reported. To assess the effect of individual impacts on the surface of a target, a series of aluminum alloys were impacted by tungsten carbide spheres, 343 /gmm in diameter, at 28.5 m s-1 and 30° incidence angle. A mechanical properties microprobe was used to measure the hardness of the crater bottoms and the material just below the surface of the craters. Strain hardening was observed in these materials but there was no evidence of softening.

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Characteristics of individual impact craters on selected aluminum alloys

Abstract

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