Pub Date : 2024-01-01DOI: 10.2320/matertrans.f-m2023812
Kazuki Yamazaki, Toshio Haga
{"title":"Reduction of Surface Crack by Modified Molten Metal Pouring Method on Al–Mg Alloy Strips Produced by Twin-Roll Casting","authors":"Kazuki Yamazaki, Toshio Haga","doi":"10.2320/matertrans.f-m2023812","DOIUrl":"https://doi.org/10.2320/matertrans.f-m2023812","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139125911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-22DOI: 10.2320/matertrans.mt-mf2022026
L. Weissitsch, Franziska Staab, K. Durst, A. Bachmaier
Magnets are key materials for the electrification of mobility and also for the generation and transformation of electric energy. Research and development in recent decades lead to high performance magnets, which require a finely tuned microstructure to serve applications with ever increasing requirements. Besides optimizing already known materials and the search on novel material combinations, an increasing interest in unconventional processing techniques and the utilization of magnetic concepts is apparent. Severe plastic deformation (SPD), in particular by high-pressure torsion (HPT) is a versatile and suitable method to manufacture microstructures not attained so far, but entitling different magnetic coupling mechanisms fostering magnetic properties. In this work, we review recent achievements obtained by HPT on soft and hard magnetic materials, focusing on powder as starting materials. Furthermore, we give specific attention to the formation of magnetic composites and highlight the opportunities of powder starting materials for HPT to exploit magnetic interaction mechanism.
{"title":"Magnetic Materials via High-Pressure Torsion Deformation of Powders","authors":"L. Weissitsch, Franziska Staab, K. Durst, A. Bachmaier","doi":"10.2320/matertrans.mt-mf2022026","DOIUrl":"https://doi.org/10.2320/matertrans.mt-mf2022026","url":null,"abstract":"Magnets are key materials for the electrification of mobility and also for the generation and transformation of electric energy. Research and development in recent decades lead to high performance magnets, which require a finely tuned microstructure to serve applications with ever increasing requirements. Besides optimizing already known materials and the search on novel material combinations, an increasing interest in unconventional processing techniques and the utilization of magnetic concepts is apparent. Severe plastic deformation (SPD), in particular by high-pressure torsion (HPT) is a versatile and suitable method to manufacture microstructures not attained so far, but entitling different magnetic coupling mechanisms fostering magnetic properties. In this work, we review recent achievements obtained by HPT on soft and hard magnetic materials, focusing on powder as starting materials. Furthermore, we give specific attention to the formation of magnetic composites and highlight the opportunities of powder starting materials for HPT to exploit magnetic interaction mechanism.","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69121135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.2320/matertrans.mt-t2023004
Yasuhiro Hoshiyama, Daichi Hamamoto, T. Maruoka
{"title":"Fabrication of CrFeCoNiSi High Entropy Alloys Dispersed with Silicon Compounds by Low-Pressure Plasma Spraying","authors":"Yasuhiro Hoshiyama, Daichi Hamamoto, T. Maruoka","doi":"10.2320/matertrans.mt-t2023004","DOIUrl":"https://doi.org/10.2320/matertrans.mt-t2023004","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138624569","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.2320/matertrans.mt-mh2022011
I. Priscillal, Sea-Fue Wang, Satoshi Kameoka
{"title":"Influence of Reaction Parameters on the Structural and Morphological Properties of Carbon Nanocoils Synthesized Using Al3Y and Effect of Rh Addition","authors":"I. Priscillal, Sea-Fue Wang, Satoshi Kameoka","doi":"10.2320/matertrans.mt-mh2022011","DOIUrl":"https://doi.org/10.2320/matertrans.mt-mh2022011","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138611425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.2320/matertrans.mt-m2023075
Junko Hieda, Atsushi Kato, Hiroto Kuroyanagi
{"title":"Preparation of Titanium–Calcium Alloy Films and Evaluation of Hydroxyapatite Formation Ability","authors":"Junko Hieda, Atsushi Kato, Hiroto Kuroyanagi","doi":"10.2320/matertrans.mt-m2023075","DOIUrl":"https://doi.org/10.2320/matertrans.mt-m2023075","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138612237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.2320/matertrans.mt-m2022076
Yuma Aoki, M. Koyama, Masaki Tanaka, K. Tsuzaki
We investigated how dwell fatigue loading accelerates the crack propagation in bi-modal Ti 6Al 4Valloy. A fatigue test was programmed to include displacement holding for only one cycle at several ¦ K . We found (1) crack tip strain evolved during the displacement holding, (2) the displacement holding increased fatigue striation spacing, and (3) the strain increment during the displacement holding was linearly correlated with spacing of the displacement-holding-extended striations. These facts indicate that the dwell loading assisted crack opening, which accelerated the crack propagation. Other analyses results and discussion are also presented, in terms of crack propagation mode, crack closure, and dislocation structure. [doi:10.2320 / matertrans.MT-M2022076]
{"title":"Crack Tip Deformation during Dwell Fatigue and Its Correlation with Crack/Fracture Surface Morphologies in a Bi-Modal Ti–6Al–4V Alloy","authors":"Yuma Aoki, M. Koyama, Masaki Tanaka, K. Tsuzaki","doi":"10.2320/matertrans.mt-m2022076","DOIUrl":"https://doi.org/10.2320/matertrans.mt-m2022076","url":null,"abstract":"We investigated how dwell fatigue loading accelerates the crack propagation in bi-modal Ti 6Al 4Valloy. A fatigue test was programmed to include displacement holding for only one cycle at several ¦ K . We found (1) crack tip strain evolved during the displacement holding, (2) the displacement holding increased fatigue striation spacing, and (3) the strain increment during the displacement holding was linearly correlated with spacing of the displacement-holding-extended striations. These facts indicate that the dwell loading assisted crack opening, which accelerated the crack propagation. Other analyses results and discussion are also presented, in terms of crack propagation mode, crack closure, and dislocation structure. [doi:10.2320 / matertrans.MT-M2022076]","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69110270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-12-01DOI: 10.2320/matertrans.m-m2023809
Shohei Matsunaga, Takahiro Suzuki, T. Hagio, Jae-Hyeok Park, Y. Kamimoto, R. Ichino, Kyohei Takeshita, Fumiatsu Sato, Kazuo Sasaya, Takahisa Iguchi, Minoru Tsunekawa
{"title":"Facile Synthesis of Spherical Porous Tricobalt Tetroxide and Metal Cobalt for High Quality Cobalt Production and Recycling","authors":"Shohei Matsunaga, Takahiro Suzuki, T. Hagio, Jae-Hyeok Park, Y. Kamimoto, R. Ichino, Kyohei Takeshita, Fumiatsu Sato, Kazuo Sasaya, Takahisa Iguchi, Minoru Tsunekawa","doi":"10.2320/matertrans.m-m2023809","DOIUrl":"https://doi.org/10.2320/matertrans.m-m2023809","url":null,"abstract":"","PeriodicalId":18402,"journal":{"name":"Materials Transactions","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138610281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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