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Title: Method and apparatus for imparting strength to a material using sliding loads

Abstract

A method of enhancing the strength of metals by affecting subsurface zones developed during the application of large sliding loads. Stresses which develop locally within the near surface zone can be many times larger than those predicted from the applied load and the friction coefficient. These stress concentrations arise from two sources: 1) asperity interactions and 2) local and momentary bonding between the two surfaces. By controlling these parameters more desirable strength characteristics can be developed in weaker metals to provide much greater strength to rival that of steel, for example.

Inventors:
 [1];  [2];  [3]
+ Show Inventor Affiliations
  1. Fremont, CA
  2. Pleasanton, CA
  3. Livermore, CA
Issue Date:
Research Org.:
Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
OSTI Identifier:
872186
Patent Number(s):
5881594
Assignee:
Sandia Corporation (Livermore, CA)
Patent Classifications (CPCs):
C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
C - CHEMISTRY C22 - METALLURGY C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
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DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; imparting; strength; material; sliding; loads; enhancing; metals; affecting; subsurface; zones; developed; application; stresses; locally; near; surface; zone; times; larger; predicted; applied; load; friction; coefficient; stress; concentrations; arise; sources; asperity; interactions; local; momentary; bonding; surfaces; controlling; parameters; desirable; characteristics; weaker; provide; rival; steel; example; near surface; surface zone; friction coefficient; applied load; sliding loads; subsurface zones; /72/148/428/

Citation Formats

Hughes, Darcy Anne, Dawson, Daniel B, and Korellis, John S. Method and apparatus for imparting strength to a material using sliding loads. United States: N. p., 1999. Web.
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Hughes, Darcy Anne, Dawson, Daniel B, & Korellis, John S. Method and apparatus for imparting strength to a material using sliding loads. United States.
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Hughes, Darcy Anne, Dawson, Daniel B, and Korellis, John S. Fri . "Method and apparatus for imparting strength to a material using sliding loads". United States. https://www.osti.gov/servlets/purl/872186.
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@article{osti_872186,
title = {Method and apparatus for imparting strength to a material using sliding loads},
author = {Hughes, Darcy Anne and Dawson, Daniel B and Korellis, John S},
abstractNote = {A method of enhancing the strength of metals by affecting subsurface zones developed during the application of large sliding loads. Stresses which develop locally within the near surface zone can be many times larger than those predicted from the applied load and the friction coefficient. These stress concentrations arise from two sources: 1) asperity interactions and 2) local and momentary bonding between the two surfaces. By controlling these parameters more desirable strength characteristics can be developed in weaker metals to provide much greater strength to rival that of steel, for example.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}
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