O. Gokcekaya, Takuya Ishimoto, Yuki Nishikawa, Yong Seong Kim, Aira Matsugaki, Ryosuke Ozasa, M. Weinmann, C. Schnitter, M. Stenzel, Hyoung-Seop Kim, Y. Miyabayashi, T. Nakano
{"title":"Novel single crystalline-like non-equiatomic TiZrHfNbTaMo bio-high entropy alloy (BioHEA) developed by laser powder bed fusion","authors":"O. Gokcekaya, Takuya Ishimoto, Yuki Nishikawa, Yong Seong Kim, Aira Matsugaki, Ryosuke Ozasa, M. Weinmann, C. Schnitter, M. Stenzel, Hyoung-Seop Kim, Y. Miyabayashi, T. Nakano","doi":"10.1080/21663831.2022.2147406","DOIUrl":"https://doi.org/10.1080/21663831.2022.2147406","url":null,"abstract":"This study developed a non-equiatomic Ti28.33Zr28.33Hf28.33Nb6.74Ta6.74Mo1.55 super-solid solutionized BioHEA using laser powder bed fusion (LPBF) to reach the full potential as BioHEA. We succeeded in significant suppression of elemental segregation, thus, resulting in a single crystalline-like texture by activating layer-to-layer epitaxial growth. Relatively low Young’s modulus was achieved in the single crystalline-like BioHEA. Moreover, LPBF-fabricated BioHEA exhibited significantly higher yield stress (1355–1426 MPa) due to the effective solid solution hardening compared to as-cast counterpart with marked segregation (949 MPa), and good biocompatibility. This is first report achieving BioHEA with low modulus, excellent strength-ductility balance, and good biocompatibility via LPBF. GRAPHICAL ABSTRACT IMPACT STATEMENT This study achieved super-solid-solutionized and single crystalline-like TiZrHfNbTaMo bio-high entropy alloy using laser powder bed fusion, resulting in low Young’s modulus along <001> oriented direction, excellent strength-ductility balance, and good cytocompatibility.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"274 - 280"},"PeriodicalIF":8.3,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41898049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Harnessing defects for high-performance MoS2 tunneling field-effect transistors","authors":"Juan Lyu, J. Gong, Huanglong Li","doi":"10.1080/21663831.2022.2145921","DOIUrl":"https://doi.org/10.1080/21663831.2022.2145921","url":null,"abstract":"ABSTRACT The two-dimensional (2D) materials-based tunneling field-effect transistors (TFETs) suffer from low driving currents. In contrast to the prevailing wisdom that defects are detrimental, we proposed to harness the ubiquitous defects in MoS2 to overcome the problem of the low on-state current in TFET. The existence of certain molybdenum-related vacancies and sulfur vacancy in appropriate positions confers the higher driving currents without compromising the low-power benefits. Such performance enhancements are related to the defect-assisted resonant Zener tunneling mechanism introduced by the mid-gap states of the vacancy defects. These unveiled hidden defect benefits could provide new opportunities for boosting the performance of 2D TFETs. GRAPHICAL ABSTRACT IMPACT STATEMENT The defect-assisted resonant Zener tunneling mechanism in TFET introduced by the mid-gap states of the vacancies in MoS2 is beneficial for enhancing the on-state current.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"266 - 273"},"PeriodicalIF":8.3,"publicationDate":"2022-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47682522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xinyang Zhou, Sifan Qiao, Nailin Yue, Wei Zhang, W. Zheng
{"title":"Soft X-ray emission spectroscopy finds plenty of room in exploring lithium-ion batteries","authors":"Xinyang Zhou, Sifan Qiao, Nailin Yue, Wei Zhang, W. Zheng","doi":"10.1080/21663831.2022.2141586","DOIUrl":"https://doi.org/10.1080/21663831.2022.2141586","url":null,"abstract":"ABSTRACT A wide range of advanced characterization tools has been exploited for energy issues. Soft X-ray emission spectroscopy (SXES) equipped with electron microscopy as an emerging analysis tool has made its debut in energy storage recently. The emergence of SXES provides powerful opportunities to explain the energy storage mechanisms, especially in the field of silicon-based anode for lithium-ion batteries. Herein, we summarize the SXES principles, development process and the unique advantages of SXES as well as coupling with other techniques. We further put forward our reasonable outlook for the development and application of SXES that will serve widely in materials science. GRAPHICAL ABSTRACT IMPACT STATEMENT This review pioneers a themed application of the emerging soft X-ray emission spectroscopy, herein mechanistic insight into lithium ion batteries.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"239 - 249"},"PeriodicalIF":8.3,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47803370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Taotao Wang, Xiangxiang Rao, Qiang Zhang, D. Jiang, Y. Ren, L. Cui, Kaiyuan Yu
{"title":"Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy","authors":"Taotao Wang, Xiangxiang Rao, Qiang Zhang, D. Jiang, Y. Ren, L. Cui, Kaiyuan Yu","doi":"10.1080/21663831.2022.2141587","DOIUrl":"https://doi.org/10.1080/21663831.2022.2141587","url":null,"abstract":"ABSTRACT The temperature dependence of the critical stress of R→B19’ transformation in NiTi shape memory alloys remains unclear due to the difficulties in precisely identifying the phase constitution and acquiring sole R phase. Here we investigate the thermally- and stress-induced martensitic transformation in a near-equiatomic nanocrystalline NiTi alloy. In situ synchrotron X-ray diffraction is used to identify the phase evolution such that the temperature window for sole R phase is firmly determined. We find that the temperature dependence of R→B19’ is negative (−0.2 MPa/K) in our alloy, in sharp contrast to 3–5 MPa/K reported. Possible reasons for the discrepancies are discussed. GRAPHICAL ABSTRACT IMPACT STATEMENT Negative temperature-dependence of stress-induced R→B19’ transformation was discovered for the first time in NiTi alloys, being in sharp contrast to previous reports. This calls for a revisit of such transformation.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"250 - 258"},"PeriodicalIF":8.3,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41972438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Ilnicka, M. Skorupska, M. Szkoda, Z. Zarach, J. Lukaszewicz
{"title":"N-doped carbon materials as electrodes for highly stable supercapacitors","authors":"A. Ilnicka, M. Skorupska, M. Szkoda, Z. Zarach, J. Lukaszewicz","doi":"10.1080/21663831.2022.2139163","DOIUrl":"https://doi.org/10.1080/21663831.2022.2139163","url":null,"abstract":"ABSTRACT This article reports a strategy to use nitrogen-doped carbon materials as electrodes for supercapacitors. Depending on the carbon precursor, the porous structure is changed with specific surface area reached up to 2270 m2 g−1. The capacitance of carbon materials used as electrodes is related strictly to pore size. The microstructure and nitrogen functionalities enable a high capacitance (327 F g−1) and cycle durability. The nanoporous carbon electrode exhibits long-term cycle life and high cycle stability with a retention of 86% of its initial after 10,000 cycles in neutral electrolyte. Highly porous carbons are thus considered a promising material for supercapacitors. GRAPHICAL ABSTRACT","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"213 - 221"},"PeriodicalIF":8.3,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45346745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhiheng Hu, Shubo Gao, Junfei Tai, Shuo Qu, Junhao Ding, Xu Song, Zheng Fan
{"title":"Columnar grain width control for SS316L via hatch spacing manipulation in laser powder bed fusion","authors":"Zhiheng Hu, Shubo Gao, Junfei Tai, Shuo Qu, Junhao Ding, Xu Song, Zheng Fan","doi":"10.1080/21663831.2022.2140018","DOIUrl":"https://doi.org/10.1080/21663831.2022.2140018","url":null,"abstract":"This study provides a quantitative way to tailor the grain structure in laser powder bed fusion (LPBF). Square-bottomed columnar grains (SCGs) were developed with a certain width roughly equal to the hatch spacing. The development of SCGs relied on different distinguishable regions, which were identified based on the differences in microstructural features between the melt-pool side and centreline. High lattice rotation accumulated at the melt-pool centreline, leading to grain boundaries forming at the centreline regions. The ultrasonic attenuation measurements and microhardness tests further validated the controllable properties. The findings indicated a novel approach to customise the material property. GRAPHICAL ABSTRACT IMPACT STATEMENT A method to quantitatively control the columnar grain width in laser powder bed fusion was uncovered. The controllable properties were indicated, and the formation mechanism was revealed.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"231 - 238"},"PeriodicalIF":8.3,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44120121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Partitioning of Ca to metastable precipitates in a Mg-rare earth alloy","authors":"Q. Shi, A. Natarajan, A. Van der Ven, J. Allison","doi":"10.1080/21663831.2022.2138724","DOIUrl":"https://doi.org/10.1080/21663831.2022.2138724","url":null,"abstract":"The potential effect of the element Ca on the precipitation behavior was investigated in an Mg-rare earth alloy. A combination of metastable β′′′ and β′ precipitates was observed for the peak aging condition at 200°C. Ca addition was found to have no significant effect on the precipitating phases and evolution sequence. Composition analysis showed that the Ca partitioned to both β′′′ and β′ precipitate phases. First-principles calculations indicated that Ca partitions to the rare-earth sublattice in the precipitate phase. This finding suggests the potential of Ca to partially replace costly rare-earth elements in precipitation-hardened Mg-rare earth alloys. GRAPHICAL ABSTRACT IMPACT STATEMENT Both experimental investigation and first-principal calculation in a Mg-Nd-Y-Ca alloy revealed the partitioning of non-rare-earth element Ca to Mg-RE precipitates, suggesting the potential of Ca to enhance precipitation and strength.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"222 - 230"},"PeriodicalIF":8.3,"publicationDate":"2022-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45642049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xin Wang, Justin Cortez, A. Dupuy, J. Schoenung, W. Bowman
{"title":"High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation","authors":"Xin Wang, Justin Cortez, A. Dupuy, J. Schoenung, W. Bowman","doi":"10.1080/21663831.2022.2135409","DOIUrl":"https://doi.org/10.1080/21663831.2022.2135409","url":null,"abstract":"Despite their vast composition space and promising properties, little is known about the fundamental mechanical behavior of high entropy oxides (HEOs). Here we provide experimental evidence of the nanoscale origin of room temperature deformation in (Co,Cu,Mg,Ni,Zn)O HEOs with different grain sizes. We find that micron-grain (Co,Cu,Mg,Ni,Zn)O deforms predominately through extensive <110>{1–10} dislocation slip manifesting as discrete slip bands. Nano-grain (Co,Cu,Mg,Ni,Zn)O, in addition to moderate dislocation slip activity, deforms through grain boundary sliding and intergranular cracking. The significant dislocation-mediated deformation and grain size dependent behavior demonstrates that HEOs have the potential for diverse and highly tailorable mechanical behavior. GRAPHICAL ABSTRACT IMPACT STATEMENT High entropy oxides (Co,Cu,Mg,Ni,Zn)O exhibit grain size dependent room temperature deformation, with micron-grain samples displaying significant potential for dislocation-mediated deformation and nanocrystalline samples exhibiting grain boundary sliding and micro-cracking.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"196 - 204"},"PeriodicalIF":8.3,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48011909","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Z. Bian, Chen Yang, Hongyi Zhu, Dechao Zhao, Mingliang Wang, Huawei Zhang, Zhe Chen, Haowei Wang
{"title":"Understanding the creep property of heat-resistant Al alloy by analyzing eutectic phase/matrix interface structures","authors":"Z. Bian, Chen Yang, Hongyi Zhu, Dechao Zhao, Mingliang Wang, Huawei Zhang, Zhe Chen, Haowei Wang","doi":"10.1080/21663831.2022.2136016","DOIUrl":"https://doi.org/10.1080/21663831.2022.2136016","url":null,"abstract":"Interface characteristics are of great importance in mechanical performance for multi-phases heat-resistant Al alloys. Herein, Al3Sc precipitates were created at both Al/Al9FeNi interface and Al matrix inside Al–Fe-Ni eutectic alloy by microalloyed Sc. Critically, Al3Sc interface precipitates were found to alleviate local lattice distortion at the Al/Al9FeNi interface to improve interface stability. Therefore, this alloy showed superior creep properties over available reports. The underlying mechanisms were quantitatively elucidated by elevated load transfer effect from interface precipitates and enhanced threshold stress from matrix precipitates. Generally, this work provided a solid understanding to optimize the creep property of eutectic Al alloys by manipulating interface structures. GRAPHICAL ABSTRACT IMPACT STATEMENT This work reports that Al3Sc precipitates at Al/Al9FeNi interface can enhance load transfer effect of eutectic phase from microscopic/macroscopic factors, illustrating fundamental mechanisms for creep improvement of eutectic Al alloy.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"205 - 212"},"PeriodicalIF":8.3,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45668002","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Lojewski, Mohamed F. Elhanoty, L. Le Guyader, O. Grånäs, Naman Agarwal, C. Boeglin, R. Carley, A. Castoldi, C. David, C. Deiter, F. Döring, R. Engel, F. Erdinger, H. Fangohr, C. Fiorini, P. Fischer, N. Gerasimova, R. Gort, F. Degroot, K. Hansen, S. Hauf, D. Hickin, M. Izquierdo, B. V. Van Kuiken, Y. Kvashnin, C. Lambert, D. Lomidze, S. Maffessanti, L. Mercadier, G. Mercurio, P. Miedema, K. Ollefs, M. Pace, M. Porro, J. Rezvani, B. Rösner, N. Rothenbach, A. Samartsev, A. Scherz, J. Schlappa, C. Stamm, M. Teichmann, P. Thunström, M. Turcato, A. Yaroslavtsev, Jun Zhu, M. Beye, H. Wende, U. Bovensiepen, Olle Eriksson, A. Eschenlohr
{"title":"The interplay of local electron correlations and ultrafast spin dynamics in fcc Ni","authors":"T. Lojewski, Mohamed F. Elhanoty, L. Le Guyader, O. Grånäs, Naman Agarwal, C. Boeglin, R. Carley, A. Castoldi, C. David, C. Deiter, F. Döring, R. Engel, F. Erdinger, H. Fangohr, C. Fiorini, P. Fischer, N. Gerasimova, R. Gort, F. Degroot, K. Hansen, S. Hauf, D. Hickin, M. Izquierdo, B. V. Van Kuiken, Y. Kvashnin, C. Lambert, D. Lomidze, S. Maffessanti, L. Mercadier, G. Mercurio, P. Miedema, K. Ollefs, M. Pace, M. Porro, J. Rezvani, B. Rösner, N. Rothenbach, A. Samartsev, A. Scherz, J. Schlappa, C. Stamm, M. Teichmann, P. Thunström, M. Turcato, A. Yaroslavtsev, Jun Zhu, M. Beye, H. Wende, U. Bovensiepen, Olle Eriksson, A. Eschenlohr","doi":"10.1080/21663831.2023.2210606","DOIUrl":"https://doi.org/10.1080/21663831.2023.2210606","url":null,"abstract":"The complex electronic structure of metallic ferromagnets is determined by a balance between exchange interaction, electron hopping leading to band formation, and local Coulomb repulsion. By combining high energy and temporal resolution in femtosecond time-resolved X-ray absorption spectroscopy with ab initio time-dependent density functional theory we analyze the electronic structure in fcc Ni on the time scale of these interactions in a pump-probe experiment. We distinguish transient broadening and energy shifts in the absorption spectra, which we demonstrate to be captured by electron repopulation respectively correlation-induced modifications of the electronic structure, requiring to take the local Coulomb interaction into account. GRAPHICAL ABSTRACT IMPACT STATEMENT We demonstrate that local correlations are essential for the transient electronic structure of optically excited Ni; paving the way for analyzing these interactions on their intrinsic timescales in correlated materials.","PeriodicalId":18291,"journal":{"name":"Materials Research Letters","volume":"11 1","pages":"655 - 661"},"PeriodicalIF":8.3,"publicationDate":"2022-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45938431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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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