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Crystallization Behavior and Magnetic Properties of Nanocrystalline Sm(Co0.9Cu0.1)5 Alloy 纳米晶Sm(Co0.9Cu0.1)5合金的结晶行为和磁性能
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-19 DOI: 10.1007/s11837-025-07631-5
Xu-hao Han, Cheng-han Fang, Hao-jie Wang, Xing-cheng Yao, Qian-qian Jin
{"title":"Crystallization Behavior and Magnetic Properties of Nanocrystalline Sm(Co0.9Cu0.1)5 Alloy","authors":"Xu-hao Han,&nbsp;Cheng-han Fang,&nbsp;Hao-jie Wang,&nbsp;Xing-cheng Yao,&nbsp;Qian-qian Jin","doi":"10.1007/s11837-025-07631-5","DOIUrl":"10.1007/s11837-025-07631-5","url":null,"abstract":"<div><p>The nanocrystalline SmCo<sub>5</sub> permanent magnet alloy demonstrates exceptional magnetic properties owing to its distinctive nanoscale microstructure. In this study, leveraging crystallization annealing to regulate the SmCo<sub>5</sub> amorphous alloy microstructure, a systematic temperature-time-controlled strategy was proposed to optimize its nanocrystalline microstructure. The effects of the annealing time and temperature on the crystallization, phase evolution, and magnetic properties of this alloy were systematically studied. Sm(Co<sub>0.9</sub>Cu<sub>0.1</sub>)<sub>5</sub> nanocrystalline alloys were obtained via high-energy ball milling (HEBM) and then annealed at 550–700°C. The amorphous phase initially transformed into metastable Sm(Co,Cu)<sub>7</sub> phase, followed by the gradual transition to the Sm(Co,Cu)<sub>5</sub> main phase and Sm<sub>2</sub>(Co,Cu)<sub>17</sub>-R trace phase. Upon annealing at 550°C for 30 min, ~ 15-nm nanocrystals were formed in the alloy, with coercivity (H<sub>c</sub>) = 5.4 kOe and remanence (M<sub>r</sub>) = 28.5 emu/g. H<sub>c</sub> gradually increased with increasing annealing temperature, while M<sub>r</sub> increased slightly at 600°C and then gradually decreased. After annealing at 650°C for 4 h, the alloy exhibited uniform grains with moderate sizes and clear grain boundaries. Furthermore, H<sub>c</sub> substantially increased to 31.1 kOe and M<sub>r</sub> rose to 35.2 emu/g. These results contribute to elucidate the role of the amorphous-to-crystallization mechanism in improving the magnetic properties of SmCo<sub>5</sub>-based or similar alloys.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 11","pages":"8211 - 8218"},"PeriodicalIF":2.3,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145327606","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}
引用次数: 0
Catalytic-Role of Sr on the Evolution of Fe-rich Phases in Recycled Al-Si-Fe Alloys Sr对再生Al-Si-Fe合金富铁相演化的催化作用
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-19 DOI: 10.1007/s11837-025-07618-2
M. Kishor, P. Kaushik, A. K. Ramavajjala, S. A. G. Nahid, V. K. Modalavalasa, S. R. Gorja, A. K. Prasada Rao
{"title":"Catalytic-Role of Sr on the Evolution of Fe-rich Phases in Recycled Al-Si-Fe Alloys","authors":"M. Kishor,&nbsp;P. Kaushik,&nbsp;A. K. Ramavajjala,&nbsp;S. A. G. Nahid,&nbsp;V. K. Modalavalasa,&nbsp;S. R. Gorja,&nbsp;A. K. Prasada Rao","doi":"10.1007/s11837-025-07618-2","DOIUrl":"10.1007/s11837-025-07618-2","url":null,"abstract":"<div><p>Iron impurity in Al-Si alloys promotes the formation of plate-like β-Fe-rich intermetallics, while the presence of 0.1wt.% Mo-refined plate-like intermetallic phases occurs without significantly changeing their morphology. The present work deals with the influence of strontium (Sr) on the morphological changes in the Fe-rich phases in the recycled alloys (Mo modified). Solidification kinetics and microstructural analysis using computer-aided cooling curve analysis (CACCA), SEM-EDS, STEM and XRD, respectively, reveal a catalytic role of Sr in promoting the evolution of α-Al<sub>8</sub>(FeMo)Si phases over β-Al<sub>5</sub>FeSi-phases. Sr addition shows significant refinement in eutectic-Si and β-Fe phases and promotes the nucleation of Chinese-script α-Fe-rich phases in the recycled alloys.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 11","pages":"8309 - 8318"},"PeriodicalIF":2.3,"publicationDate":"2025-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145327517","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}
引用次数: 0
Tune In: Three Podcasts to Try From TMS Members 收听：三个播客尝试从TMS成员
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-18 DOI: 10.1007/s11837-025-07646-y
Kelly Zappas
{"title":"Tune In: Three Podcasts to Try From TMS Members","authors":"Kelly Zappas","doi":"10.1007/s11837-025-07646-y","DOIUrl":"10.1007/s11837-025-07646-y","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6344 - 6347"},"PeriodicalIF":2.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897088","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}
引用次数: 0
TMS Member News TMS会员新闻
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-14 DOI: 10.1007/s11837-025-07645-z
{"title":"TMS Member News","authors":"","doi":"10.1007/s11837-025-07645-z","DOIUrl":"10.1007/s11837-025-07645-z","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6341 - 6343"},"PeriodicalIF":2.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897111","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}
引用次数: 0
Preview TMS Events at MS&T25 在MS&T25上预览TMS活动
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-13 DOI: 10.1007/s11837-025-07648-w
Kelly Zappas
{"title":"Preview TMS Events at MS&T25","authors":"Kelly Zappas","doi":"10.1007/s11837-025-07648-w","DOIUrl":"10.1007/s11837-025-07648-w","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6352 - 6354"},"PeriodicalIF":2.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897108","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}
引用次数: 0
THE STAGE IS SET FOR EXTRACTION 2025 预计2025年进行开采
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-13 DOI: 10.1007/s11837-025-07647-x
Kaitlin Calva
{"title":"THE STAGE IS SET FOR EXTRACTION 2025","authors":"Kaitlin Calva","doi":"10.1007/s11837-025-07647-x","DOIUrl":"10.1007/s11837-025-07647-x","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6348 - 6351"},"PeriodicalIF":2.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897107","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}
引用次数: 0
Screening of Refractory High-Entropy Alloy Solidification Behavior Through Laser Glazing 激光上釉筛选难熔高熵合金的凝固行为
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-12 DOI: 10.1007/s11837-025-07620-8
A. T. Oriola, J. D. Maile, A. Nguyen, H. Do, R. Kumar, E. J. Payton
{"title":"Screening of Refractory High-Entropy Alloy Solidification Behavior Through Laser Glazing","authors":"A. T. Oriola,&nbsp;J. D. Maile,&nbsp;A. Nguyen,&nbsp;H. Do,&nbsp;R. Kumar,&nbsp;E. J. Payton","doi":"10.1007/s11837-025-07620-8","DOIUrl":"10.1007/s11837-025-07620-8","url":null,"abstract":"<div><p>The high-temperature strength of refractory high-entropy alloys (RHEAs) limits viable thermomechanical processing routes; thus, their behavior in solidification-based processes such as casting and laser powder bed fusion additive manufacturing is a primary limitation in realizing their use in extreme environment applications. The present research investigates the differences in hot cracking behavior among four refractory high-entropy compositions that show inconsistencies in their predicted cracking susceptibility according to different indicators, including the freezing range, Clyne cracking susceptibility criterion, and Kou cracking susceptibility index. Hot cracking behavior is assessed using laser glazing at two laser powers and eight different laser scan speeds for arc-melted alloy pairs. Cracking susceptibility differences and melt pool behavior are quantified and compared for key alloy pairs and assessed in the context of the strengths and limitations of cracking susceptibility indicators.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 10","pages":"7247 - 7263"},"PeriodicalIF":2.3,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11837-025-07620-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145078850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sharing Ideas Across Disciplines at TMS Specialty Congress 2025 在2025年TMS专业大会上分享跨学科的想法
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-11 DOI: 10.1007/s11837-025-07649-9
Megan Enright
{"title":"Sharing Ideas Across Disciplines at TMS Specialty Congress 2025","authors":"Megan Enright","doi":"10.1007/s11837-025-07649-9","DOIUrl":"10.1007/s11837-025-07649-9","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6355 - 6357"},"PeriodicalIF":2.3,"publicationDate":"2025-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897075","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}
引用次数: 0
2024 PERFORMANCE METRICS ANNOUNCED FOR TMS JOURNALS 为TMS期刊公布了2024个性能指标
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-08 DOI: 10.1007/s11837-025-07650-2
Matt Baker
{"title":"2024 PERFORMANCE METRICS ANNOUNCED FOR TMS JOURNALS","authors":"Matt Baker","doi":"10.1007/s11837-025-07650-2","DOIUrl":"10.1007/s11837-025-07650-2","url":null,"abstract":"","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 9","pages":"6358 - 6359"},"PeriodicalIF":2.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144897016","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}
引用次数: 0
Enhanced High-Temperature Compression Property of TiAlNb2VW0.3 Refractory High-Entropy Alloy TiAlNb2VW0.3耐火高熵合金高温压缩性能的增强
IF 2.3 4区 材料科学
JOM Pub Date : 2025-08-07 DOI: 10.1007/s11837-025-07601-x
Shulin Dong, Shibing Liu, Yingdong Qu, Ruirun Chen, Guanglong Li, Wei Zhang, Qing Li, Baihe Chen
{"title":"Enhanced High-Temperature Compression Property of TiAlNb2VW0.3 Refractory High-Entropy Alloy","authors":"Shulin Dong,&nbsp;Shibing Liu,&nbsp;Yingdong Qu,&nbsp;Ruirun Chen,&nbsp;Guanglong Li,&nbsp;Wei Zhang,&nbsp;Qing Li,&nbsp;Baihe Chen","doi":"10.1007/s11837-025-07601-x","DOIUrl":"10.1007/s11837-025-07601-x","url":null,"abstract":"<div><p>In order to further enhance the high-temperature compression property of the AlNb<sub>2</sub>TiV refractory high-entropy alloy, the AlNb<sub>2</sub>TiVW<sub><i>x</i></sub> (<i>x</i> = 0.1, 0.3, 0.5) alloys have been newly designed. The microstructure and phase composition of these alloys were investigated, and the compression property tested. The results show that white dendrite segregation can be observed in the as-cast AlNb<sub>2</sub>TiVW<sub>0.1</sub> and AlNb<sub>2</sub>TiVW<sub>0.3</sub> alloys, and is caused by W enrichment. W addition does not change the BCC phase composition of as-cast alloys, but the 0.3-W and 0.5-W addition can reduce the lattice constant. The AlNb<sub>2</sub>TiVW<sub>0.3</sub> alloy yields the best compression property with compression strengths of 1482 MPa, 1575 MPa, and 1375 MPa at 600°C, 700°C, and 800°C, respectively. Furthermore, at 200–600°C, under an initial compression stress of 500 MPa, the stress–time curve of the AlNb<sub>2</sub>TiVW<sub>0.3</sub> alloy is more stable compared with the AlNb<sub>2</sub>TiV alloy. In the AlNb<sub>2</sub>TiV alloy, the HCP phase forms in the BCC phase matrix during high-temperature compression, and the two phases have the orientation relationship of &lt;110&gt;<sub>BCC</sub>//&lt;10-10&gt;<sub>HCP</sub> and &lt;111&gt;<sub>BCC</sub>//&lt;0001&gt;<sub>HCP</sub>. However, the AlNb<sub>2</sub>TiVW<sub>0.3</sub> alloy yields a good phase stability, which will be the reason for its good compression stability.</p></div>","PeriodicalId":605,"journal":{"name":"JOM","volume":"77 11","pages":"8385 - 8391"},"PeriodicalIF":2.3,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145327505","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}
引用次数: 0
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