{"created":"2023-06-20T15:10:07.933219+00:00","id":39725,"links":{},"metadata":{"_buckets":{"deposit":"98705346-6a93-41db-9c91-bf6901cc2fb9"},"_deposit":{"created_by":1,"id":"39725","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"39725"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00039725","sets":["1887:1893","1896:1898:1933:1934"]},"author_link":["500124","500125","500122","500123"],"item_3_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Structural control and mechanical characteristic of TiAl intermetallic compound under microgravity (Intermetallics)"}]},"item_3_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1996-03-15","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"282","bibliographicPageStart":"271","bibliographic_titles":[{"bibliographic_title":"宇宙開発事業団技術報告"},{"bibliographic_title":"NASDA Technical Memorandum","bibliographic_titleLang":"en"}]}]},"item_3_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"TiB2粒子を添加したTiAl基合金および非添加のTiAl基合金を、微小重力下において凝固させたときの微細組織の発達について調査した。2元合金は、試料外部表面から中心へ向かって柱状粒組織を示した。それに対し、TiB2粒子を添加した合金は、巨大な等軸粒組織を示した。凝固収縮によって形成される空洞は、微小重力下で凝固した試料の中心部に取り込まれた。微小重力下で凝固した合金ではTiB2粒子は均一に分布したが、それに対し地上では試料の底部に偏在した。これらの粒子は、液相/固相変態に対する初晶だけではなく、固相/固相変態に対する固相析出の核生成場としても働いた。しかしながら、核生成場としての粒子の効果はその大きさと分散形態に強く依存した。以上の結果から、微小重力は巨視的にも微視的にも均一な微細組織を生成するのに有効であるという結論を得た。","subitem_description_type":"Abstract"}]},"item_3_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Microstructure evolution of the alloys based on TiAl with and without TiB2 particles solidified under microgravity have been investigated. The binary alloy exhibits a columnar grain structure from the outer surface to the center of the specimen, whereas the alloy with TiB2 particles shows a large equiaxed grain structure. The cavities caused by solidification shrinkage are enclosed in the middle of the specimen solidified under microgravity. The TiB2 particles are uniformly distributed in the alloy solidified under microgravity whereas they are segregated at the bottom of the specimen under normal gravity. These particles act as nucleation sites of not only the primary phase for liquid/solid phase transformation but also the solid phase precipitation for solid/solid phase transformation. However, the roll of the particles in the nucleation site is sensitive to the size and distribution morphology. These results lead to the conclusion that the microgravity environment is effective in producing uniform microstructure both macroscopically and microscopically.","subitem_description_type":"Other"}]},"item_3_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0000271016","subitem_description_type":"Other"}]},"item_3_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: NASDA-TMR-960004","subitem_description_type":"Other"}]},"item_3_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙開発事業団"}]},"item_3_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"National Space Development Agency of Japan (NASDA)"}]},"item_3_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1345-7888","subitem_source_identifier_type":"ISSN"}]},"item_3_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN00364784","subitem_source_identifier_type":"NCID"}]},"item_3_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"金属材料技術研究所 組織制御研究部"},{"subitem_text_value":"東京工業大学 工学部"}]},"item_3_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Research Institute for Metals Advanced Material Processing Division"},{"subitem_text_language":"en","subitem_text_value":"Tokyo Institute of Technology Faculty of Engineering"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"佐藤, 彰"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"竹山, 雅夫"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sato, Akira","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takeyama, Masao","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-02-10"}],"displaytype":"detail","filename":"00271016.pdf","filesize":[{"value":"1.5 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"00271016.pdf","url":"https://jaxa.repo.nii.ac.jp/record/39725/files/00271016.pdf"},"version_id":"558e481e-006f-4de3-a05b-ec2b438a5f68"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"微小重力","subitem_subject_scheme":"Other"},{"subitem_subject":"TiAl系金属間化合物","subitem_subject_scheme":"Other"},{"subitem_subject":"TiB2粒子","subitem_subject_scheme":"Other"},{"subitem_subject":"凝固収縮","subitem_subject_scheme":"Other"},{"subitem_subject":"柱状粒組織","subitem_subject_scheme":"Other"},{"subitem_subject":"等軸粒組織","subitem_subject_scheme":"Other"},{"subitem_subject":"液相/固相変態","subitem_subject_scheme":"Other"},{"subitem_subject":"固相/固相変態","subitem_subject_scheme":"Other"},{"subitem_subject":"核生成場","subitem_subject_scheme":"Other"},{"subitem_subject":"宇宙実験","subitem_subject_scheme":"Other"},{"subitem_subject":"組織制御","subitem_subject_scheme":"Other"},{"subitem_subject":"microgravity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"TiAl intermetallic compound","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"TiB2 particle","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"solidification shrinkage","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"columnar grain structure","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"equiaxed grain structure","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"liquid solid phase transformation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"solid solid phase transformation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"nucleation site","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"space experiment","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"structural control","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"technical report","resourceuri":"http://purl.org/coar/resource_type/c_18gh"}]},"item_title":"微小重力下におけるTiAl系金属間化合物の組織制御とその機械的性質(INTERMETALLICS)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"微小重力下におけるTiAl系金属間化合物の組織制御とその機械的性質(INTERMETALLICS)"}]},"item_type_id":"3","owner":"1","path":["1893","1934"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"39725","relation_version_is_last":true,"title":["微小重力下におけるTiAl系金属間化合物の組織制御とその機械的性質(INTERMETALLICS)"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T20:29:34.166426+00:00"}