{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/23709"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/23709","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Creep-fatigue interaction in a low alloy bainitic steel and an austenitic stainless steel","abstract":"Restriction data tranferred 2014-07-01T11:31:50-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","abstract_html":"Restriction data tranferred 2014-07-01T11:31:50-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","abstract_has_math":false,"creators":["Srikanth, Ramamoorthy"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Engineering, Materials Science","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2011,"date_issued":"2011-05-07T14:24:09Z","date_published":"2011-05-07T14:24:09Z","updated_at":"2026-07-22T22:25:22Z","subjects":["Engineering, Materials Science"],"languages":["eng"],"rights":["Copyright 1989 Srikanth, Ramamoorthy"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9011036","(UMI)AAI9011036"],"render_values":[{"text":"AAI9011036","href":null,"code":true},{"text":"(UMI)AAI9011036","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/23709","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Srikanth, Ramamoorthy"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2011-05-07T14:24:09Z","10000-01-01","1989"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Engineering, Materials Science"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engineering, Materials Science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 1989 Srikanth, Ramamoorthy"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["AAI9011036","(UMI)AAI9011036","http://hdl.handle.net/2142/23709"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Restriction data tranferred 2014-07-01T11:31:50-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","Creep, fatigue and creep-fatigue tests with five and ten minutes hold time were conducted using smooth and modified keyhole compact tension specimens. Measurements were made of the crack initiation and propagation of a 2 1/4Cr-1Mo steel in the normalized and tempered condition and a 304 stainless steel in the annealed condition at temperature of 565$\\sp\\circ$C and 650$\\sp\\circ$C, respectively, in air. Stress redistribution times under creep loading were computed to establish the governing stress field for crack initiation and crack growth using the creep isochronous curves and an analytical solution. Smooth specimen test results were used to predict the crack initiation life under fatigue and creep-fatigue loading using the local strain approach and to predict the total life under creep loading using the reference stress approach. Microstructural analysis was carried out to identify the failure mechanisms.","It was found that crack initiation occupied a major portion of the failure life under creep and creep-fatigue loading and that stress redistribution times were two orders of magnitude lower than the crack initiation times. Both materials were identified as creep-ductile, with reference stress-controlled initiation and growth behavior. Creep failure mechanism predominates after short hold times ($>$5 minutes). Creep cavitation was the failure mechanism in 304 stainless steel while exhaustion of matrix ductility with very little creep damage was the dominant failure node for 2 1/4Cr-1Mo steel under creep and creep-fatigue loading.","Made available in DSpace on 2011-05-07T14:24:09Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9011036.pdf: 5950874 bytes, checksum: 8aba479de934033f90dd8b3b2179634d (MD5) Previous issue date: 1989","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:06:19Z Item is restricted indefinitely.","U of I Only"]},{"key":"dc:title","label":"Title","values":["Creep-fatigue interaction in a low alloy bainitic steel and an austenitic stainless steel"]}]}],"canonical_facts":{"dc:creator":["Srikanth, Ramamoorthy"],"dc:date":["2011-05-07T14:24:09Z","10000-01-01","1989"],"dc:description":["Restriction data tranferred 2014-07-01T11:31:50-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: ETDs are only available to UIUC Users without author permission","ETDs are only available to UIUC Users without author permission","Creep, fatigue and creep-fatigue tests with five and ten minutes hold time were conducted using smooth and modified keyhole compact tension specimens. Measurements were made of the crack initiation and propagation of a 2 1/4Cr-1Mo steel in the normalized and tempered condition and a 304 stainless steel in the annealed condition at temperature of 565$\\sp\\circ$C and 650$\\sp\\circ$C, respectively, in air. Stress redistribution times under creep loading were computed to establish the governing stress field for crack initiation and crack growth using the creep isochronous curves and an analytical solution. Smooth specimen test results were used to predict the crack initiation life under fatigue and creep-fatigue loading using the local strain approach and to predict the total life under creep loading using the reference stress approach. Microstructural analysis was carried out to identify the failure mechanisms.","It was found that crack initiation occupied a major portion of the failure life under creep and creep-fatigue loading and that stress redistribution times were two orders of magnitude lower than the crack initiation times. Both materials were identified as creep-ductile, with reference stress-controlled initiation and growth behavior. Creep failure mechanism predominates after short hold times ($>$5 minutes). Creep cavitation was the failure mechanism in 304 stainless steel while exhaustion of matrix ductility with very little creep damage was the dominant failure node for 2 1/4Cr-1Mo steel under creep and creep-fatigue loading.","Made available in DSpace on 2011-05-07T14:24:09Z (GMT). No. of bitstreams: 2 license.txt: 4922 bytes, checksum: 910b249b4beec47e7ab768910c8f966f (MD5) 9011036.pdf: 5950874 bytes, checksum: 8aba479de934033f90dd8b3b2179634d (MD5) Previous issue date: 1989","Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Howard Ding (hding2@illinois.edu) on 2011-05-07T15:06:19Z Item is restricted indefinitely.","U of I Only"],"dc:identifier":["AAI9011036","(UMI)AAI9011036","http://hdl.handle.net/2142/23709"],"dc:language":["eng"],"dc:rights":["Copyright 1989 Srikanth, Ramamoorthy"],"dc:subject":["Engineering, Materials Science"],"dc:title":["Creep-fatigue interaction in a low alloy bainitic steel and an austenitic stainless steel"],"dc:type":["text"],"thesis:degree_discipline":["Engineering, Materials Science"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:25:22Z"}