{"id":"S85068673","label":"Isothermal transformation diagrams","description":"","source_url":"https://id.loc.gov/authorities/subjects/sh85068673","normalized_label":"isothermal transformation diagrams","broader":["http://id.loc.gov/authorities/subjects/sh85100637","http://id.loc.gov/authorities/subjects/sh85101565"],"aliases":["S curves (Metallurgy)","TTT curves (Metallurgy)","Time-temperature-transformation curves (Metallurgy)"],"source_identifier":"http://id.loc.gov/authorities/subjects/sh85068673","provider":"lcsh","revision":"3e8cb46843feda5f","taxonomy_revision":"f050b5d4780b1289","title":"Isothermal transformation diagrams","url":"/topics/S85068673","kind":"topic-directory","aeo_cohort":"topic-directory","catalogue_revision":"f050b5d4780b1289","numeric_address":"288309540993254976","address_version":"morton4x16-v1","coordinates":[0,20,18478,1024],"answer_status":"Directory metadata; local answer requires separate source review","truth_status":"Subject descriptor, not a factual answer or a demonstrated knowledge gap","reviewed_answer":null}