Grain boundary segregation and intergranular failure

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Trace elements and impurities often segregate strongly to grain boundaries in metals and alloys. Concentrations of these elements at grain boundaries are often 10/sup 3/ to 10/sup 5/ times as great as their overall concentration in the alloy. Because of such segregation, certain trace elements can exert a disproportionate influence on material properties. One frequently observed consequence of trace element segregation to grain boundaries is the occurrence of grain boundary failure and low ductility. Less well known are incidences of improved ductility and inhibition of grain boundary fracture resulting from trace element segregation to grain boundaries in certain systems. An ... continued below

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Pages: 65

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White, C.L. January 1, 1980.

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Description

Trace elements and impurities often segregate strongly to grain boundaries in metals and alloys. Concentrations of these elements at grain boundaries are often 10/sup 3/ to 10/sup 5/ times as great as their overall concentration in the alloy. Because of such segregation, certain trace elements can exert a disproportionate influence on material properties. One frequently observed consequence of trace element segregation to grain boundaries is the occurrence of grain boundary failure and low ductility. Less well known are incidences of improved ductility and inhibition of grain boundary fracture resulting from trace element segregation to grain boundaries in certain systems. An overview of trace element segregation and intergranular failure in a variety of alloy systems as well as preliminary results from studies on Al 3% Li will be presented.

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Pages: 65

Notes

NTIS, PC A04/MF A01.

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  • International Al-Li conference, Stone Mountain, GA, USA, 19 May 1980

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  • Report No.: CONF-8005109-1(Draft)
  • Grant Number: W-7405-EN-26
  • Grant Number: AC05-76OR00033
  • Office of Scientific & Technical Information Report Number: 5136465
  • Archival Resource Key: ark:/67531/metadc1058140

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1980

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • Feb. 1, 2018, 1:28 p.m.

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White, C.L. Grain boundary segregation and intergranular failure, article, January 1, 1980; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1058140/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.