{"683141":{"#nid":"683141","#data":{"type":"event","title":"MS Defense by Reinol Eko Sianturi","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EReinol Eko Sianturi\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EAdvisor: Prof. Suman Das (ME\/MSE)\u003C\/p\u003E\u003Cp\u003E\u003Cem\u003Ewill defend a master\u2019s thesis entitled,\u003C\/em\u003E\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EIn-Situ Alloying Strategies for Enhanced Hydrogen Embrittlement Resistance in IN718: A Coupon-Scale Study Utilizing Scanning Laser Epitaxy\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EOn\u003C\/p\u003E\u003Cp\u003EMonday, July 21st at 10:00 a.m.\u003C\/p\u003E\u003Cp\u003EGTMI Room 211\u003C\/p\u003E\u003Cp\u003EOr\u003C\/p\u003E\u003Cp\u003EOn Teams\u003C\/p\u003E\u003Cp\u003E\u003Ca href=\u0022https:\/\/teams.microsoft.com\/l\/meetup-join\/19%3ameeting_YWYxYzhmOWItNjk2NC00ZTU1LTgzN2ItYWM4MTVjMzZiNjkw%40thread.v2\/0?context=%7b%22Tid%22%3a%22482198bb-ae7b-4b25-8b7a-6d7f32faa083%22%2c%22Oid%22%3a%2273b93697-d0cc-460a-ba64-e7000c5de8ef%22%7d\u0022 title=\u0022Meeting join link\u0022\u003E\u003Cstrong\u003EJoin the meeting now\u003C\/strong\u003E\u003C\/a\u003E\u003C\/p\u003E\u003Cp\u003EMeeting ID:\u0026nbsp;275 818 703 245\u003C\/p\u003E\u003Cp\u003EPasscode:\u0026nbsp;bk68uk9G\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003ECommittee\u003C\/strong\u003E\u003C\/p\u003E\u003Cul\u003E\u003Cli\u003EProf. Suman Das, Advisor, ME\/MSE\u003C\/li\u003E\u003Cli\u003EProf. Preet Singh, MSE\u003C\/li\u003E\u003Cli\u003EProf. Rick Neu, ME\u003C\/li\u003E\u003C\/ul\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EThis preliminary study establishes a high-throughput scanning laser epitaxy (SLE) methodology for in-situ alloying of IN718 superalloy at the coupon scale, targeting the accelerated development of hydrogen-resistant formulations for hot gas path components in hydrogen-fueled turbines. Seventeen modified IN718 compositions with tungsten (1.50\u20132.00 wt.%) and titanium (1.50\u20132.00 wt.%) additions were synthesized to enhance hydrogen embrittlement resistance (HER). Microstructural characterization revealed uniform dendritic structures across all coupons, while X-ray fluorescence confirmed homogeneous elemental distribution. Hydrogen charging tests (200 hours) demonstrated that tungsten-enriched formulations exhibited significantly smaller microhardness increases (\u0394HV \u0026lt; 15% vs. \u0026gt;30% in baseline IN718), indicating superior HER. These results validate SLE as an efficient screening platform for rapid alloy development and identify tungsten as a critical HER-enhancing element. The study provides foundational data for future macroscale additive manufacturing of components with enhanced resistance to hydrogen environment embrittlement.\u003C\/p\u003E\u003Cp\u003E\u0026nbsp;\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EIn-Situ Alloying Strategies for Enhanced Hydrogen Embrittlement Resistance in IN718: A Coupon-Scale Study Utilizing Scanning Laser Epitaxy\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"In-Situ Alloying Strategies for Enhanced Hydrogen Embrittlement Resistance in IN718: A Coupon-Scale Study Utilizing Scanning Laser Epitaxy"}],"uid":"27707","created_gmt":"2025-07-15 17:58:06","changed_gmt":"2025-07-15 17:58:37","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2025-07-21T10:00:00-04:00","event_time_end":"2025-07-21T12:00:00-04:00","event_time_end_last":"2025-07-21T12:00:00-04:00","gmt_time_start":"2025-07-21 14:00:00","gmt_time_end":"2025-07-21 16:00:00","gmt_time_end_last":"2025-07-21 16:00:00","rrule":null,"timezone":"America\/New_York"},"location":"GTMI Room 211 Or On Teams","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"111531","name":"ms 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":""}}}