{"id":{"repo_id":"ohiolink","oai_identifier":"oai:etd.ohiolink.edu:case1365507691"},"canonical_url":"https://search.dev.ndltd.org/etd/ohiolink/oai:etd.ohiolink.edu:case1365507691","repository":{"repo_id":"ohiolink","name":"OhioLINK","base_url":"https://etd.ohiolink.edu/acprod/odb_etd/ws/oai/oai"},"display":{"title":"Mechanical Property Evolution and Thermal Remediation of Aluminum Magnesium 5xxx Alloys Following Low and Intermediate Temperature Thermal Exposure","abstract":"Al-Mg 5xxx alloys are desirable in a wide array of structural applications that require a weldable alloy with good corrosion resistance. However, mechanical property changes may result from intermediate temperature exposures. Commercially available 5xxx alloy plates have been thermally treated up to 10,000 hrs. (13 months) at temperatures of 60°C, 70°C, 80°C, 100°C, and 175°C. Room temperature hardness, tension and fatigue crack growth tests have been completed to determine changes in mechanical properties in the LT orientation. Longitudinal splitting in the short-transverse (ST) direction has been observed during fatigue after sufficient time and temperature exposure combinations. Fracture and fatigue testing has additionally been employed on long-time sensitized material. The evolution of properties (i.e. mechanical/fracture/fatigue, corrosion resistance, etc.) and microstructures (e.g. grain boundary segregation, grain boundary precipitation, etc.) with thermal exposure at these (and lower) temperatures has significant practical implications for various structural applications. The effects of thermal remediation treatments are also described.","abstract_html":"Al-Mg 5xxx alloys are desirable in a wide array of structural applications that require a weldable alloy with good corrosion resistance. However, mechanical property changes may result from intermediate temperature exposures. Commercially available 5xxx alloy plates have been thermally treated up to 10,000 hrs. (13 months) at temperatures of 60°C, 70°C, 80°C, 100°C, and 175°C. Room temperature hardness, tension and fatigue crack growth tests have been completed to determine changes in mechanical properties in the LT orientation. Longitudinal splitting in the short-transverse (ST) direction has been observed during fatigue after sufficient time and temperature exposure combinations. Fracture and fatigue testing has additionally been employed on long-time sensitized material. The evolution of properties (i.e. mechanical/fracture/fatigue, corrosion resistance, etc.) and microstructures (e.g. grain boundary segregation, grain boundary precipitation, etc.) with thermal exposure at these (and lower) temperatures has significant practical implications for various structural applications. The effects of thermal remediation treatments are also described.","abstract_has_math":false,"creators":["Seifi, Seyed Mohsen"],"institution":"Case Western Reserve University School of Graduate Studies","degree_name":"Master of Sciences","degree_level":"masters","degree_discipline":"Materials Science and Engineering","degree_department":null,"school":null,"contributors":["Lewandowski, John"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2013,"date_issued":"2013-08-19","date_published":"2013-08-19","updated_at":"2026-07-24T03:37:01Z","subjects":["Materials Science","Metallurgy"],"languages":["English"],"rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. 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Longitudinal splitting in the short-transverse (ST) direction has been observed during fatigue after sufficient time and temperature exposure combinations. Fracture and fatigue testing has additionally been employed on long-time sensitized material. The evolution of properties (i.e. mechanical/fracture/fatigue, corrosion resistance, etc.) and microstructures (e.g. grain boundary segregation, grain boundary precipitation, etc.) with thermal exposure at these (and lower) temperatures has significant practical implications for various structural applications. The effects of thermal remediation treatments are also described."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf","p.183","16.15 MB"]},{"key":"dc:title","label":"Title","values":["Mechanical Property Evolution and Thermal Remediation of Aluminum Magnesium 5xxx Alloys Following Low and Intermediate Temperature Thermal Exposure"]}]}],"canonical_facts":{"dc:contributor":["Lewandowski, John"],"dc:creator":["Seifi, Seyed Mohsen"],"dc:date":["2013-08-19"],"dc:description":["Al-Mg 5xxx alloys are desirable in a wide array of structural applications that require a weldable alloy with good corrosion resistance. However, mechanical property changes may result from intermediate temperature exposures. Commercially available 5xxx alloy plates have been thermally treated up to 10,000 hrs. (13 months) at temperatures of 60°C, 70°C, 80°C, 100°C, and 175°C. Room temperature hardness, tension and fatigue crack growth tests have been completed to determine changes in mechanical properties in the LT orientation. Longitudinal splitting in the short-transverse (ST) direction has been observed during fatigue after sufficient time and temperature exposure combinations. Fracture and fatigue testing has additionally been employed on long-time sensitized material. The evolution of properties (i.e. mechanical/fracture/fatigue, corrosion resistance, etc.) and microstructures (e.g. grain boundary segregation, grain boundary precipitation, etc.) with thermal exposure at these (and lower) temperatures has significant practical implications for various structural applications. The effects of thermal remediation treatments are also described."],"dc:format":["application/pdf","p.183","16.15 MB"],"dc:identifier":["http://rave.ohiolink.edu/etdc/view?acc_num=case1365507691"],"dc:language":["English"],"dc:publisher":["Case Western Reserve University School of Graduate Studies / OhioLINK"],"dc:rights":["unrestricted","This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws."],"dc:subject":["Materials Science","Metallurgy"],"dc:title":["Mechanical Property Evolution and Thermal Remediation of Aluminum Magnesium 5xxx Alloys Following Low and Intermediate Temperature Thermal Exposure"],"dc:type":["Electronic Thesis or Dissertation"],"thesis:degree_discipline":["Materials Science and Engineering"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Sciences"],"thesis:institution_name":["Case Western Reserve University School of Graduate Studies"]},"updated_at":"2026-07-24T03:37:01Z"}