{"created":"2023-07-25T08:04:55.210026+00:00","id":3225,"links":{},"metadata":{"_buckets":{"deposit":"1f9b050d-573a-4d96-ae41-026b64418849"},"_deposit":{"created_by":18,"id":"3225","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"3225"},"status":"published"},"_oai":{"id":"oai:ir.kagoshima-u.ac.jp:00003225","sets":["228:274:4792","64:65"]},"author_link":[],"item_7_biblio_info_5":{"attribute_name":"収録雑誌名","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1993-03-25","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"45","bibliographicPageStart":"35","bibliographicVolumeNumber":"13","bibliographic_titles":[{"bibliographic_title":"鹿児島大学歯学部紀要","bibliographic_titleLang":"ja"}]}]},"item_7_date_6":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"1993-03-25","subitem_date_issued_type":"Issued"}]},"item_7_description_4":{"attribute_name":"要約(Abstract)","attribute_value_mlt":[{"subitem_description":"Ordering and age-hardening behaviors in Cu_<0.5>Au_<0.5-X>Ni_X alloys (in at%, x=0 ～ 11.9) were investigated by means of electrical resistivity measurement, hardness test, X-ray diffraction and transmission electron microscopy. In addition, corrosion in alloys mentioned above was also evaluated. The effects of Ni contents on ordering and age-hardening behaviors were as follows ; 1 ) For each alloy aged for up to 50000min at 300℃, the maximum value of hardness ranged between 275 and 330 Hv and decreased little by little depending on the increase of Ni contents (at %) . And the aging time when softening started increased slightly in order of alloys CA-1. CAN-2 and -3 and also the softening rate was suppressed by degrees. For the alloys CAN-4 and -5,the softening rate at the overaging stage was very slow. 2 ) Upon aging treatment at 300℃, a single phase with the CuAu I-type superstructure was produced in the alloys CA-1,CAN-2 and -3. On the other hand, in the alloys CAN-4 and -5,a mixture of a CuAu I-type ordered phase and a smail amount of nickel-rich α_2 phase with the face-centered cubic structure was produced. From these results, it can be seen that the hardening would be due to the introduction of coherency strain at the interface between the CuAu I nuclei and the surrounding matrix and that a loss of coherency strain at interface occurred by twinning brought about softening of the alloy, I.e., overaging. Potentiodynamic (-500 to 1000mV) and potentiostatic (750mV, 600s) polarization measurements were conducted in l%NaCl solution (37℃) deaerated with N_2 gas bubbling, using a platinum (a counter electrode) and KCI saturated Ag/AgCl (a reference electrode) . For the Cu_<0.5>Au_<0.5-X>Ni_X alloys tested in the present study, it was found that there was little difference in Q values between the disordered and the ordered alloys and that the Q values would be mainly controlled by the dissolution of Cu from the Cu_<0.5>Au_<0.5-X>Ni_X alloys and Ni was little dissolved.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_7_publisher_23":{"attribute_name":"公開者・出版者","attribute_value_mlt":[{"subitem_publisher":"鹿児島大学","subitem_publisher_language":"ja"},{"subitem_publisher":"Kagoshima University","subitem_publisher_language":"en"}]},"item_7_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"03897834","subitem_source_identifier_type":"PISSN"}]},"item_7_source_id_9":{"attribute_name":"NII書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AN0035442X","subitem_source_identifier_type":"NCID"}]},"item_7_subject_15":{"attribute_name":"NDC","attribute_value_mlt":[{"subitem_subject":"497","subitem_subject_scheme":"NDC"}]},"item_7_subject_20":{"attribute_name":"NIIsubject","attribute_value_mlt":[{"subitem_subject":"歯学","subitem_subject_language":"ja","subitem_subject_scheme":"Other"}]},"item_7_version_type_14":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"藤井, 孝一","creatorNameLang":"ja"},{"creatorName":"FUJII, Koichi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"白石, 孝信","creatorNameLang":"ja"},{"creatorName":"SHIRAISHI, Takanobu","creatorNameLang":"en"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2016-10-27"}],"displaytype":"detail","filename":"KJ00000165774.pdf","filesize":[{"value":"913.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"KJ00000165774.pdf","objectType":"fulltext","url":"https://ir.kagoshima-u.ac.jp/record/3225/files/KJ00000165774.pdf"},"version_id":"9759a6fa-8d41-48ad-af74-1c94ec2ec5ad"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Cu_<0.5>Au_<0.5-X>Ni_X Alloy","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"age-hardening","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Overaging","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Hardness test","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Electrical resistivity","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":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Cu_<0.5>Au_<0.5-X>Ni_X系合金の相変態過程と時効硬化挙動","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Cu_<0.5>Au_<0.5-X>Ni_X系合金の相変態過程と時効硬化挙動","subitem_title_language":"ja"},{"subitem_title":"Phase Transformation Process and Age-hardening Behavior in Cu_<0.5>Au_<0.5-X>Ni_X Alloys","subitem_title_language":"en"}]},"item_type_id":"7","owner":"18","path":["65","4792"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2015-05-01"},"publish_date":"2015-05-01","publish_status":"0","recid":"3225","relation_version_is_last":true,"title":["Cu_<0.5>Au_<0.5-X>Ni_X系合金の相変態過程と時効硬化挙動"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2024-01-26T07:10:15.585763+00:00"}