{"title":"Effect of sintering conditions on the hardness of porous pure magnesium fabricated by MM-SPS process","authors":"Takumi Inomiya, Masahiro Kubota","doi":"10.2464/jilm.74.28","DOIUrl":"https://doi.org/10.2464/jilm.74.28","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"42 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140507422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Surface adhesion enhancement of A5052 aluminum alloy by surface texturing with a UV pulsed laser","authors":"R. Kuwano, Makoto Hino, Tsuyoshi Tokunaga, Norihito Nagata, Toshihiko Koga, Nathan Hagen, Yukitoshi Otani","doi":"10.2464/jilm.74.18","DOIUrl":"https://doi.org/10.2464/jilm.74.18","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"101 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140507961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of chemical composition and microstructure on the thermal conductivity of Mg-Al-Ca alloys","authors":"Yuichi Kirimoto, Natsuki Kondo, Mizuki Ito, Tadayoshi Tsukeda, Tetsuo Aida, Hironobu Tabata, Hideki Kurihara, Mayumi Suzuki","doi":"10.2464/jilm.74.9","DOIUrl":"https://doi.org/10.2464/jilm.74.9","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140507160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"AZ91Dマグネシウム合金の機械的特性と析出物の体積率との関係","authors":"Hideaki Iwaoka, Masaya Iwasaki, Hiroyuki Watanabe","doi":"10.2464/jilm.74.22","DOIUrl":"https://doi.org/10.2464/jilm.74.22","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"55 8-10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140507638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Effect of Cu addition on electrochemical activity of ribbons of Mg-Al-Ca anode materials for magnesium rechargeable batteries manufactured by rapid solidification method","authors":"Shunsaku Fukui, Tadayoshi Tsukeda, Tetsuo Aida, Hironobu Tabata, Hideki Kurihara, Mayumi Suzuki","doi":"10.2464/jilm.74.14","DOIUrl":"https://doi.org/10.2464/jilm.74.14","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"32 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140507196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of manufacturing conditions of single roll rapidly solidified ribbon for anode materials of magnesium rechargeable batteries","authors":"Yuichi Kirimoto, Kousuke Fuke, Tadayoshi Tsukeda, Tetsuo Aida, Yasunori Nemoto, Minoru Ikeda, Hironobu Tabata, Hideki Kurihara, Mayumi Suzuki","doi":"10.2464/jilm.73.537","DOIUrl":"https://doi.org/10.2464/jilm.73.537","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"30 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139275837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ryota Higa, H. Fujihara, H. Toda, M. Kobayashi, Kenichi Ebihara, Akihisa Takeuchi
{"title":"Multi-modal 3D image-based simulation of hydrogen embrittlement crack initiation in Al-Zn-Mg alloy","authors":"Ryota Higa, H. Fujihara, H. Toda, M. Kobayashi, Kenichi Ebihara, Akihisa Takeuchi","doi":"10.2464/jilm.73.530","DOIUrl":"https://doi.org/10.2464/jilm.73.530","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"161 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139271177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Akihiro Choshi, Tianqi Zhu, Naoki Takata, Asuka Suzuki, M. Kobashi
{"title":"単結晶マイクロピラー圧縮試験を用いたAl-Fe合金積層造形体の高強度支配因子の検討","authors":"Akihiro Choshi, Tianqi Zhu, Naoki Takata, Asuka Suzuki, M. Kobashi","doi":"10.2464/jilm.73.523","DOIUrl":"https://doi.org/10.2464/jilm.73.523","url":null,"abstract":"","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"12 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139275978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rei Yano, Masaki Tanaka, Shigeto Yamasaki, Tatsuya Morikawa, Tomohito Tsuru
Impact tests and tensile tests were conducted between 77 K and 450 K in order to elucidate the temperature dependence of absorbed-impact energy, yield stress, effective shear stress, activation volume, and activation enthalpy. The impact-absorbed energy decreased with decreasing test temperature, however, this alloy did not undergo low-temperature embrittlement although it has a bcc structure. Tensile tests showed changes in both the work-hardening rate and the temperature dependence of yield stress at approximately 150 K. This suggests a change in the mechanism behind the plastic deformation at the temperature. The temperature dependence of the activation enthalpy for dislocation glide suggests that the process of climbing over the Peierls potential (kink-pair nucleation) is the dominant mechanism for the dislocation glide from 150 K to 200 K, while the interaction between a dislocation and solute atoms dominantly controls the dislocation glide above 200 K. Superelasticity appears in stress-strain curves tested below 120 K, suggesting that the yielding is governed by transformation-induced plasticity below 120 K. The enhanced toughness at low temperatures in these alloys is discussed from the viewpoint of dislocation shielding theory.
{"title":"<i>β</i>型チタン合金Ti-22V-4Alにおける変形・破壊挙動の温度依存性","authors":"Rei Yano, Masaki Tanaka, Shigeto Yamasaki, Tatsuya Morikawa, Tomohito Tsuru","doi":"10.2464/jilm.73.497","DOIUrl":"https://doi.org/10.2464/jilm.73.497","url":null,"abstract":"Impact tests and tensile tests were conducted between 77 K and 450 K in order to elucidate the temperature dependence of absorbed-impact energy, yield stress, effective shear stress, activation volume, and activation enthalpy. The impact-absorbed energy decreased with decreasing test temperature, however, this alloy did not undergo low-temperature embrittlement although it has a bcc structure. Tensile tests showed changes in both the work-hardening rate and the temperature dependence of yield stress at approximately 150 K. This suggests a change in the mechanism behind the plastic deformation at the temperature. The temperature dependence of the activation enthalpy for dislocation glide suggests that the process of climbing over the Peierls potential (kink-pair nucleation) is the dominant mechanism for the dislocation glide from 150 K to 200 K, while the interaction between a dislocation and solute atoms dominantly controls the dislocation glide above 200 K. Superelasticity appears in stress-strain curves tested below 120 K, suggesting that the yielding is governed by transformation-induced plasticity below 120 K. The enhanced toughness at low temperatures in these alloys is discussed from the viewpoint of dislocation shielding theory.","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Porous aluminum has lightweight and low density, with high shock absorption, sound absorption, and insulation properties, but generally has downward bending and tensile strengths. Improving its bending and tensile strengths is necessary for the industrial use of porous aluminum. In this study, composite materials with wire mesh inside porous aluminum were fabricated. By fabricating a composite material of porous aluminum and stainless steel wire mesh, we considered that the internal wire mesh could improve the tensile strength of the porous aluminum. The wire mesh was placed between precursors to fabricate the composite material of porous aluminum and stainless steel wire mesh. The precursors were heated and foamed, and pressed immediately after foaming. Scanning electron microscopy (SEM) showed no gaps at most boundaries between the porous aluminum and the wire mesh. It was also confirmed that there was no clear joint boundary between the porous aluminum foamed from the two precursors. Tensile test results showed that the tensile strength of the composite material in this study was the sum of the strength of the porous aluminum and the wire mesh, and that the strength was increased.
{"title":"ADC12ポーラスアルミニウムとステンレス金網の複合化による高強度化の検討","authors":"Tatsuki Takagi, Yoshihiko Hangai, Yu Goto, Kenji Amagai","doi":"10.2464/jilm.73.504","DOIUrl":"https://doi.org/10.2464/jilm.73.504","url":null,"abstract":"Porous aluminum has lightweight and low density, with high shock absorption, sound absorption, and insulation properties, but generally has downward bending and tensile strengths. Improving its bending and tensile strengths is necessary for the industrial use of porous aluminum. In this study, composite materials with wire mesh inside porous aluminum were fabricated. By fabricating a composite material of porous aluminum and stainless steel wire mesh, we considered that the internal wire mesh could improve the tensile strength of the porous aluminum. The wire mesh was placed between precursors to fabricate the composite material of porous aluminum and stainless steel wire mesh. The precursors were heated and foamed, and pressed immediately after foaming. Scanning electron microscopy (SEM) showed no gaps at most boundaries between the porous aluminum and the wire mesh. It was also confirmed that there was no clear joint boundary between the porous aluminum foamed from the two precursors. Tensile test results showed that the tensile strength of the composite material in this study was the sum of the strength of the porous aluminum and the wire mesh, and that the strength was increased.","PeriodicalId":16292,"journal":{"name":"Journal of Japan Institute of Light Metals","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135766492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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