Accession Number:

ADA073497

Title:

Electronmicroscopic Study of Sand Erosion Processes in Metals.

Descriptive Note:

Final scientific rept. 1 Mar 78-28 Feb 79,

Corporate Author:

ISRAEL INST OF METALS HAIFA

Personal Author(s):

Report Date:

1979-06-01

Pagination or Media Count:

38.0

Abstract:

Knowledge and understanding of the variables, both environmental and metallurgical, affecting erosion of materials, are detrimental to predicting erosion behavior and minimizing erosion damage. In this study erosion behavior of composite aluminum alloys containing hard phase constituents such as silicon carbides and alumina has been investigated. Use has been made of electron microscopy techniques for examination of eroded surface morphology, structure and composition with special attention to the effect of hard phase particles on erosion processes i.e. material removal. It has been found that higher fraction of hard particles in metal alloy led to higher target weight loss under the same erosion conditions. Observations of eroded surface obtained by SEM suggest that erosion process or material removal is composed of two basic processes a. local material removal from particle-free surface target. b. complete removal of hard particles from the eroded target surface. The role of hard phase constituents on erosion process in composite metal alloys should be investigated further.

Subject Categories:

  • Laminates and Composite Materials
  • Metallurgy and Metallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE