{"470241":{"#nid":"470241","#data":{"type":"event","title":"PhD Defense - Justin Lamb","body":[{"value":"\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EMSE PhD Defense - Justin Lamb\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003EDate: Wednesday, December 2, 2015\u003C\/p\u003E\u003Cp\u003ETime: 3:15 PM\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ELocation: Love 210\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDr. Thomas H. Sanders Jr, MSE (Adviser)\u003C\/p\u003E\u003Cp\u003EDr. Preet Singh, MSE\u003C\/p\u003E\u003Cp\u003EDr. Naresh Thadhani, MSE\u003C\/p\u003E\u003Cp\u003EDr. Arun Gokhale, MSE\u003C\/p\u003E\u003Cp\u003EMr. Victor Dangerfield, Universal Alloy Corporation\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ETitle:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EDecomposition and its effects on mechanical properties in Al-Zn-Mg-Cu alloys\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract:\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EThe effects of variations in composition on the decomposition process in Al-Zn-Mg-Cu alloys (i.e. \u2013 7xxx-series aluminum alloy) were studied emphasizing their effect on mechanical properties.\u0026nbsp; Several experimental quaternary alloys were studied to compare their behavior with commercial 7xxx-series alloys.\u0026nbsp; The investigation included studies on the effects of natural aging, artificial aging, quench sensitivity, precipitate free zone formation, corrosion, stretching, and homogenization.\u0026nbsp; Fluctuations in the main alloy elements\/processing parameters can alter the precipitation process.\u0026nbsp; The purpose of this work is to quantify those changes using standard industrial techniques.\u0026nbsp; For example, it was found that natural aging prior to artificial aging was detrimental for strength in the T6 temper for alloys containing more than 1.0 wt.% Cu, and was shown to alter the coarsening kinetics in the over-aged condition (T7).\u0026nbsp; Conversely, for alloys with Cu contents less than 0.5% natural aging was shown to be beneficial for strength.\u0026nbsp; Altering the Zn:Mg ratio was also shown to effect natural aging response of an alloy in addition to introducing additional precipitation processes (T-phase).\u003C\/p\u003E\u003Cp\u003E \u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Decomposition and its effects on mechanical properties in Al-Zn-Mg-Cu alloys"}],"uid":"27707","created_gmt":"2015-11-16 15:25:43","changed_gmt":"2016-10-08 02:14:50","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2015-12-02T19:15:00-05:00","event_time_end":"2015-12-02T21:15:00-05:00","event_time_end_last":"2015-12-02T21:15:00-05:00","gmt_time_start":"2015-12-03 00:15:00","gmt_time_end":"2015-12-03 02:15:00","gmt_time_end_last":"2015-12-03 02:15:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}