@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix matsci: <https://w3id.org/matsci-sam/metadata#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary> a skos:Concept ;
  skos:inScheme <https://w3id.org/matsci-sam/vocabulary/mrc> ;
  skos:prefLabel "grain boundary"@en ;
  matsci:canonicalDefinition <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3> ;
  skos:definition <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/1/revisions/1> ;
  skos:definition <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/2/revisions/1> ;
  skos:definition <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3/revisions/1> ;
  dcterms:contributor "Christopher Rauch" ;
  dcterms:contributor "Jane Greenberg" ;
  dcterms:created "2026-07-24"^^xsd:date .

<https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/1> a matsci:Definition ;
  dcterms:isPartOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary> ;
  matsci:definitionNumber "1"^^xsd:positiveInteger ;
  matsci:currentRevision <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/1/revisions/1> ;
  dcterms:hasVersion <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/1/revisions/1> ;
  dcterms:created "2026-07-24T03:04:42.100Z"^^xsd:dateTime .

<https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/1/revisions/1> a matsci:DefinitionRevision ;
  rdf:value "The interface between two adjacent crystalline grains whose crystal lattices have different orientations."@en ;
  skos:example "Reducing the average grain size increased the alloy’s yield strength because the additional grain boundaries impeded dislocation motion."@en ;
  dcterms:isVersionOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/1> ;
  prov:specializationOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/1> ;
  dcterms:creator "Christopher Rauch" ;
  matsci:version "1"^^xsd:positiveInteger ;
  matsci:status "proposed" ;
  dcterms:created "2026-07-24T03:04:42.100Z"^^xsd:dateTime .

<https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/2> a matsci:Definition ;
  dcterms:isPartOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary> ;
  matsci:definitionNumber "2"^^xsd:positiveInteger ;
  matsci:currentRevision <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/2/revisions/1> ;
  dcterms:hasVersion <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/2/revisions/1> ;
  dcterms:created "2026-07-24T03:05:28.918Z"^^xsd:dateTime .

<https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/2/revisions/1> a matsci:DefinitionRevision ;
  rdf:value "A planar defect representing the interface between two adjacent crystals (grains) with differing crystallographic orientations."@en ;
  skos:example "Reducing the average grain size increases the yield strength of an alloy through the Hall-Petch effect, as the increased density of grain boundaries acts as a barrier to dislocation motion."@en ;
  dcterms:isVersionOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/2> ;
  prov:specializationOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/2> ;
  dcterms:creator "Christopher Rauch" ;
  matsci:version "1"^^xsd:positiveInteger ;
  matsci:status "proposed" ;
  dcterms:created "2026-07-24T03:05:28.918Z"^^xsd:dateTime .

<https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3> a matsci:Definition ;
  dcterms:isPartOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary> ;
  matsci:definitionNumber "3"^^xsd:positiveInteger ;
  matsci:currentRevision <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3/revisions/1> ;
  dcterms:hasVersion <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3/revisions/1> ;
  dcterms:created "2026-07-30T13:59:15.503Z"^^xsd:dateTime .

<https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3/revisions/1> a matsci:DefinitionRevision ;
  rdf:value "The interface between two adjacent crystals (grains) characterized by a discontinuity in crystallographic orientation."@en ;
  skos:example "Reducing the average grain size increased the alloy’s yield strength because the additional grain boundaries impeded dislocation motion."@en ;
  dcterms:isVersionOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3> ;
  prov:specializationOf <https://w3id.org/matsci-sam/vocabulary/mrc/grain_boundary/definitions/3> ;
  dcterms:creator "Jane Greenberg" ;
  matsci:version "1"^^xsd:positiveInteger ;
  matsci:status "proposed" ;
  dcterms:created "2026-07-30T13:59:15.503Z"^^xsd:dateTime .