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Unit Manufacturing Processes Issues and Opportunities in Research (1995) / Chapter Skim
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9 Behavior of Materials
Pages 123-126

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
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From page 123...
... Knowledge of this material microstructure evolution sequence is essential to the understanding of the intermediate properties, as well as to the final resulting properties of the product. The workplace surface and interior microstructure comprise many components, each with its representative chemistry, size, shape, and distribution.
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From page 124...
... A description of the surface of a part involves three components: the topography or geometry, defined as surface finish plus waviness; the metallurgical state of the material; and the residual stresses produced by processing. For example, mass-change processes can alter all three factors by introducing concentrated, localized, high-energy gradients on the workpiece surface, which, in turn, create high surface temperatures with extended thermal gradients, plastic deformation accompanied by plastically deformed debris, and chemical reactions with subsequent diffusion into the workpiece surface.
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From page 125...
... products. These maps could be developed in part through the application of the microstructure evolution models and enhanced constitutive relationships discussed above.
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Key Terms

  • material behavior
  • microstructure evolution
  • workpiece surface
  • microstructural features
  • chemical reaction

  • product properties
  • process parameters
  • surface region
  • reaction products
  • heat transfer

  • intermediate properties
  • bulk material
  • interior region
  • workpiece interactions
  • past history

  • progressive phenomenon
  • energy flux
  • process limits
  • useful tools
  • respective composition

  • surface temperatures
  • ultimately governed
  • process agents
  • resulting properties
  • representative chemistry

  • introducing concentrated
  • process conditions
  • chemical reactions
  • changes caused
  • boundary conditions


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