Intermetallics最新文献_第5页

Achieving synergistic enhancement of wear resistance and plasticity in (TiB+Ti5Si3)/TC4 composites with dual quasi-continuous network structure via reinforcement content control 通过增强物含量控制，实现双准连续网状结构(TiB+Ti5Si3)/TC4复合材料耐磨性和塑性的协同增强

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-08 DOI: 10.1016/j.intermet.2026.109149

Shiqian Zhao , Chunyu Yue , Bowen Zheng , Feng Gu , Fuyu Dong , Xiaojiao Zuo , Xuejian Lin , Hongjun Huang , Wentao Zheng , Xiaoguang Yuan

{"title":"Achieving synergistic enhancement of wear resistance and plasticity in (TiB+Ti5Si3)/TC4 composites with dual quasi-continuous network structure via reinforcement content control","authors":"Shiqian Zhao , Chunyu Yue , Bowen Zheng , Feng Gu , Fuyu Dong , Xiaojiao Zuo , Xuejian Lin , Hongjun Huang , Wentao Zheng , Xiaoguang Yuan","doi":"10.1016/j.intermet.2026.109149","DOIUrl":"10.1016/j.intermet.2026.109149","url":null,"abstract":"<div><div>This study in-situ fabricates (TiB + Ti<sub>5</sub>Si<sub>3</sub>)/TC4 composites with a dual quasi-continuous network structure through casting. The work systematically investigates the effects of the reinforced phase content on microstructure, mechanical properties, and tribological performance. Results show that Ti<sub>5</sub>Si<sub>3</sub> particles significantly alter the microstructure. TiB whiskers transform from long acicular to short acicular morphology. Ti<sub>5</sub>Si<sub>3</sub> particles precipitate at α/β phase interfaces and inside β phases. This precipitation behavior forms the dual quasi-continuous network structure. With increasing reinforced phase content, the mechanical properties and tribological performance undergo initial enhancement followed by degradation. The (3 vol% TiB+4 vol% Ti<sub>5</sub>Si<sub>3</sub>)/TC4 composite (S-3) demonstrates optimal comprehensive properties. Its hardness reaches 59.33 HRC, compressive strength hits 1875 MPa, and plasticity reaches 20.4 %. This composite also shows notable wear resistance. The strengthening mechanism involves matrix grain refinement, solid-solution strengthening, load transfer, thermal mismatch strengthening, and Orowan strengthening induced by reinforced phases. In addition, the reinforced phases hinder crack propagation, which enhances the composites’ plastic deformation capacity and wear resistance. This work proves that optimizing the TiB/Ti<sub>5</sub>Si<sub>3</sub> ratio enables improvement of the properties of titanium matrix composites. It provides a theoretical basis for designing composites with high strength, high plasticity, and favorable wear resistance.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109149"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145923543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Divergent machinability and deformation mechanisms in directed energy deposited CrCoNi and (CrCoNi)94Al3Ti3 medium-entropy alloys 定向能沉积CrCoNi和（CrCoNi）94Al3Ti3中熵合金的可加工性及变形机制

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-16 DOI: 10.1016/j.intermet.2026.109162

Chunyu Tong , Zekai Liu , Ting Yue , Sulin Chen , Bin Shen

{"title":"Divergent machinability and deformation mechanisms in directed energy deposited CrCoNi and (CrCoNi)94Al3Ti3 medium-entropy alloys","authors":"Chunyu Tong , Zekai Liu , Ting Yue , Sulin Chen , Bin Shen","doi":"10.1016/j.intermet.2026.109162","DOIUrl":"10.1016/j.intermet.2026.109162","url":null,"abstract":"<div><div>Although medium-entropy alloys (MEAs) fabricated by additive manufacturing hold great industrial potential, the fundamental role of Al/Ti alloying in machining-induced subsurface deformation remains unexplored. This study systematically investigates the machinability and deformation mechanisms of CrCoNi and (CrCoNi)<sub>94</sub>Al<sub>3</sub>Ti<sub>3</sub> alloys fabricated via directed energy deposition (DED) through an integrated analysis of the cutting forces, surface integrity, and EBSD-based subsurface characterization. Compared to CrCoNi, (CrCoNi)<sub>94</sub>Al<sub>3</sub>Ti<sub>3</sub> exhibits 11.8 % higher cutting forces, which is associated with enhanced resistance to plastic deformation arising from grain refinement and Al/Ti-enriched microstructural features, while achieving an 18.3 % lower surface roughness due to strain hardening that suppresses lateral material flow. The non-monotonic cutting-force behavior under a constant material removal rate is interpreted as a transition from compression-dominated ploughing to shear-dominated chip formation. Fundamental differences in subsurface mechanisms were revealed: CrCoNi developed stress-relieving recrystallization with gradient grains, whereas (CrCoNi)<sub>94</sub>Al<sub>3</sub>Ti<sub>3</sub> exhibited 70.4 % higher near-surface strain hardening owing to dislocation accumulation. Optimal parameters (v<sub>c</sub> = 1000 mm/s, f<sub>z</sub> = 0.05 mm/z, a<sub>p</sub> = 0.15 mm) were identified to simultaneously maximize the machining efficiency and surface quality. These findings provide new insights into alloy design for machinability by elucidating how Al/Ti modification alters the deformation pathways in additively manufactured MEAs during cutting, thereby offering practical guidelines for the precision manufacturing of complex components.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109162"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Mechanistic insights into direction-modulated electromigration failures and intermetallic formation in symmetric/asymmetric SnAg solder microbumps 对称/非对称SnAg焊料微凸点中方向调制电迁移失效和金属间形成的机理

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-10 DOI: 10.1016/j.intermet.2026.109160

Dinh-Phuc Tran , Tzu-Chieh Pan , Shi-Chi Yang , Mai-Phuong La , Chih Chen

{"title":"Mechanistic insights into direction-modulated electromigration failures and intermetallic formation in symmetric/asymmetric SnAg solder microbumps","authors":"Dinh-Phuc Tran , Tzu-Chieh Pan , Shi-Chi Yang , Mai-Phuong La , Chih Chen","doi":"10.1016/j.intermet.2026.109160","DOIUrl":"10.1016/j.intermet.2026.109160","url":null,"abstract":"<div><div>With the growing adoption of advanced flip-chip–based vertical stacking packaging technology, solder microbumps are required to shrink to accommodate higher input/output density. However, the increased current density intensifies electromigration (EM)-induced damage, thus compromising chip reliability. In this study, we elucidate the failure mechanisms of asymmetric (Cu/SnAg/Ni/Cu) and symmetric (Cu/SnAg/Cu) microbump structures under EM tests. Results showed that, under the comparable EM test, the asymmetric Cu/SnAg/Ni/Cu structure exhibited more severe EM-induced degradation than the symmetric Cu/SnAg/Cu structure. Cross-sectional analyses were also conducted to further correlate the under-bump-metallization (UBM) dissolution rates, void formation, and failure time. We found that the symmetric structure demonstrated a longer failure time<strong>,</strong> while the asymmetric solder joint exhibited a higher UBM dissolution rate and void ratio. In the symmetric joints, UBM degradation and void growth occurred primarily on the cathode side<strong>,</strong> governed by EM direction. In contrast, the asymmetric counterparts experienced additional effects from thermomigration and chemical potential gradients, causing UBM dissolution and severe void formation on the side without a Ni diffusion barrier layer.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109160"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Influence of Al and Ti on precipitation behavior and corrosion resistance in CoCrNi alloys Al和Ti对CoCrNi合金析出行为和耐蚀性的影响

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-16 DOI: 10.1016/j.intermet.2026.109168

M.K. Xu, A.X. Li, K.W. Kang, S.B. Yu, S.K. Liu, Y.T. Jiang, B.R. Zhang, Y.Q. Li, G. Li

{"title":"Influence of Al and Ti on precipitation behavior and corrosion resistance in CoCrNi alloys","authors":"M.K. Xu, A.X. Li, K.W. Kang, S.B. Yu, S.K. Liu, Y.T. Jiang, B.R. Zhang, Y.Q. Li, G. Li","doi":"10.1016/j.intermet.2026.109168","DOIUrl":"10.1016/j.intermet.2026.109168","url":null,"abstract":"<div><div>This study explores the corrosion behavior of CoCrNi(AlTi)<sub>x</sub> medium entropy alloys with varying Al and Ti additions (x = 0, 0.05, 0.10, 0.15), focusing on the influence of L1<sub>2</sub> precipitates in Cl rich environments. Electrochemical tests in 3.5 wt% NaCl solution demonstrate that the alloy with moderate AlTi content (x = 0.05) exhibits the best corrosion resistance, characterized by a corrosion current density of 45 ± 6 nA/cm<sup>2</sup>, a pitting potential of 857 ± 13 mV (vs. Ag/AgCl), and an extended passivation region spanning approximately 0.5–1.6 V (vs. Ag/AgCl). Increasing the AlTi concentration leads to a higher volume fraction of L1<sub>2</sub> precipitates, which correlates with increased corrosion current densities and reduced passivation stability. These variations in electrochemical performance are attributed to changes in precipitate distribution and their effect on passive film stability under Cl<sup>−</sup>. The findings highlight the critical role of controlled L1<sub>2</sub> precipitation in optimizing corrosion resistance in CoCrNi alloys.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109168"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effect of microstructure evolution on the mechanical performance of Fe49CrxCo9.8Ni39.2-xAl2 high-entropy alloys 组织演变对Fe49CrxCo9.8Ni39.2-xAl2高熵合金力学性能的影响

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-05 DOI: 10.1016/j.intermet.2025.109146

Chengxu Wang , Lin Zhou , Zhongli Liu , Xiangkui Liu

{"title":"Effect of microstructure evolution on the mechanical performance of Fe49CrxCo9.8Ni39.2-xAl2 high-entropy alloys","authors":"Chengxu Wang , Lin Zhou , Zhongli Liu , Xiangkui Liu","doi":"10.1016/j.intermet.2025.109146","DOIUrl":"10.1016/j.intermet.2025.109146","url":null,"abstract":"<div><div>Here, we successfully synthesized a variety of Fe<sub>49</sub>Cr<sub>x</sub>Co<sub>9.8</sub>Ni<sub>39.2-x</sub>Al<sub>2</sub> (x = 27.4, 28.4, 29.4 at%) eutectic or near-eutectic high-entropy alloys (HEAs) through directly casting. As the Cr content increases from 27.4 at% to 29.4 at%, the volume fraction of FCC phase shows a gradual decreasing trend, while the BCC phase demonstrates a gradual increasing trend. The studied HEAs display outstanding mechanical properties within a specific composition range, surpassing many other eutectic HEAs (EHEAs). Particularly, the as-cast Fe<sub>49</sub>Cr<sub>28.4</sub>Co<sub>9.8</sub>Ni<sub>10.8</sub>Al<sub>2</sub> HEA presents a duplex eutectic microstructure and exhibits remarkable mechanical performance. Specifically, the yield strength and the ultimate tensile strength reach 632 MPa and 823 MPa. And the fracture elongation maintains 25.1 %. Such outstanding mechanical properties primarily due to grain boundary strengthening, phase interface strengthening and precipitation strengthening. The design strategy offers promising insights for the design of high-performance alloys.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109146"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145897999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Composition-dependent design rules for BCC phase stability in AlCoCrFeNi high-entropy Alloys: Insights from an integrated DFT–MD–ML framework AlCoCrFeNi高熵合金中BCC相稳定性的成分依赖设计规则：来自集成DFT-MD-ML框架的见解

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-05 DOI: 10.1016/j.intermet.2025.109143

Dong-Yeh Wu , Shin-Pon Ju , Che-Hsin Lin , Bo-Shiuan Li , Pin-Xiang Huang

{"title":"Composition-dependent design rules for BCC phase stability in AlCoCrFeNi high-entropy Alloys: Insights from an integrated DFT–MD–ML framework","authors":"Dong-Yeh Wu , Shin-Pon Ju , Che-Hsin Lin , Bo-Shiuan Li , Pin-Xiang Huang","doi":"10.1016/j.intermet.2025.109143","DOIUrl":"10.1016/j.intermet.2025.109143","url":null,"abstract":"<div><div>The prediction of phase stability in multi-principal-element alloys remains a critical challenge in physical metallurgy. Here, we establish quantitative design rules for body-centered cubic (BCC) phase stability in AlCoCrFeNi high-entropy alloys through a fully computational approach that integrates density functional theory (DFT), deep learning potential (DLP), molecular dynamics (MD), and machine learning (ML). Using a curated dataset of over 1400 alloy compositions, our trained models achieve a validation accuracy of ∼88 % and an external test-set AUC above 0.94. The resulting stability maps reveal empirical composition windows—namely, Al + Cr ≥ 0.30, Co + Ni ≤ 0.30, and total concentration 0.45 ≤ x ≤ 0.60—that consistently promote BCC formation. These trends are consistent with reported experimental phase observations in Al–Co–Cr–Fe–Ni systems, thereby bridging computational prediction with metallurgical design. Our results provide not only an efficient route to accelerate alloy exploration but also physically interpretable rules that advance fundamental understanding of phase stability in high-entropy intermetallic systems.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109143"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145898000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 influence of precipitates on the indentation creep behavior of (CoCrFeNi)94Ti2Al4 alloy 析出相对（CoCrFeNi）94Ti2Al4合金压痕蠕变行为的影响

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-21 DOI: 10.1016/j.intermet.2026.109169

Jiaohui Yan , Fei Hou , Lei Li , Di Wan , Xun Guo , Ke Jin , Yunfei Xue

{"title":"The influence of precipitates on the indentation creep behavior of (CoCrFeNi)94Ti2Al4 alloy","authors":"Jiaohui Yan , Fei Hou , Lei Li , Di Wan , Xun Guo , Ke Jin , Yunfei Xue","doi":"10.1016/j.intermet.2026.109169","DOIUrl":"10.1016/j.intermet.2026.109169","url":null,"abstract":"<div><div>This study investigates the influence of precipitate size on the room-temperature indentation creep behavior of (CoCrFeNi)<sub>94</sub>Ti<sub>2</sub>Al<sub>4</sub> high-entropy alloy by using nanoindentation system equipped with Berkovich diamond indenter combined with microstructural characterization. Nano-hardness, creep displacement, and creep strain rate of specimens with different sizes of nanoscale precipitates were analyzed under conditions of a 20 mN peak load and a 0.5 mN/s loading rate. Results show that precipitate refinement enhances the alloy hardness and reduces the total creep depth, while the steady-state creep rate increases slightly with an insignificant increment. When the testing conditions (loading rate and peak load) were changed, although the trend of inhibiting total creep displacement by precipitate refinement remained unchanged, the effect of precipitate refinement on the steady-state creep rate was not significant. Additionally, creep analysis using a spherical indenter were conducted to calculate the creep stress exponent <em>n</em>. Results showed that the precipitate-containing alloy exhibited a higher <em>n</em> value than the precipitate-free alloy, with dislocation creep identified as the dominant deformation mechanism in both cases. This study enables rapid screening of materials via nanoindentation creep, provides deeper mechanistic insights into the creep deformation of precipitation-strengthened high-entropy alloys, and establishes a theoretical framework for property optimization.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109169"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effects of palladium substitution on structural evolution and electrochemical properties of BCC solid solution alloys coexisting with Laves phase 钯取代对Laves相共存的BCC固溶体合金结构演变及电化学性能的影响

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-17 DOI: 10.1016/j.intermet.2026.109161

ZhiYuan Cao , GuangBo Shi , YaNan Fang , Kwo Young , HongMei Qiu , Muhammad Irfan Nawaz , Amjad Ali , Ghulam Murtaza , ChuBin Wan

{"title":"Effects of palladium substitution on structural evolution and electrochemical properties of BCC solid solution alloys coexisting with Laves phase","authors":"ZhiYuan Cao , GuangBo Shi , YaNan Fang , Kwo Young , HongMei Qiu , Muhammad Irfan Nawaz , Amjad Ali , Ghulam Murtaza , ChuBin Wan","doi":"10.1016/j.intermet.2026.109161","DOIUrl":"10.1016/j.intermet.2026.109161","url":null,"abstract":"<div><div>In this study, a series of BCC solid solution hydrogen storage alloys coexisting with C14 Laves phase, Ti<sub>13.6</sub>Zr<sub>2.1</sub>V<sub>44</sub>Cr<sub>13.2</sub>Mn<sub>6.9</sub>Fe<sub>2.7</sub>Co<sub>1.4</sub>Ni<sub>15.7-x</sub>Al<sub>0.3</sub>Pd<sub>x</sub> (x = 0.5, 1.0, 1.5, and 2.0), were successfully synthesized and systematically investigated. The results indicate that the introduction of palladium can significantly modify the phase fractions of C14 and BCC, while simultaneously reducing the unit cell volume of the C14 phase. Electrochemical performance tests reveal that, within a specific palladium content range, the initial discharge capacity improves significantly, rising from ∼330 mAh/g in Pd<sub>0.5</sub> to ∼385 mAh/g in Pd<sub>2.0</sub>. Regarding cycle stability, the Pd<sub>1.5</sub> alloy exhibits a capacity retention rate of 80 % after 200 cycles, significantly outperforming the 51 % retention of Pd<sub>0.5</sub>. Additionally, Pd<sub>1.5</sub> exhibits the highest exchange current density (84.7 mA g<sup>−1</sup>), the fastest hydrogen diffusion coefficient (15.4 × 10<sup>−10</sup> cm<sup>2</sup> s<sup>−1</sup>), and the lowest charge transfer resistance (3.9 Ohm), indicating the superior high-rate discharge capability in the studied alloys. These findings provide valuable guidance for the design of advanced hydrogen storage alloys and highlight their potential for practical fuel cell applications.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109161"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145974681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

High performance Co-doped FeSiBC amorphous alloys for extreme aquatic environments 用于极端水生环境的高性能共掺杂FeSiBC非晶合金

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-19 DOI: 10.1016/j.intermet.2026.109173

Yijun Ding , Senkuan Meng , Jianfeng Wang , Xiaotong Sun , Hao Xie , Yiwei Liu , Xin Wang , Weimin Wang , Lina Hu , Zheng Wang

{"title":"High performance Co-doped FeSiBC amorphous alloys for extreme aquatic environments","authors":"Yijun Ding , Senkuan Meng , Jianfeng Wang , Xiaotong Sun , Hao Xie , Yiwei Liu , Xin Wang , Weimin Wang , Lina Hu , Zheng Wang","doi":"10.1016/j.intermet.2026.109173","DOIUrl":"10.1016/j.intermet.2026.109173","url":null,"abstract":"<div><div>Corrosive conditions in extreme aquatic environments currently constrain the application of Fe-based amorphous alloys, which see extensive use in fields dedicated to dual carbon and energy efficiency due to their superior soft-magnetic properties. Enhancing the corrosion resistance of Fe-based amorphous alloys holds both scientific and engineering significance. In this work, new alloys with high corrosion resistance have been developed by Co doping on the basis of commercially available FeSiBC amorphous alloy. The Co-doped alloys exhibit a denser atomic arrangement and suppressed heterogeneous structural defects. These characteristics contribute to the formation of a more stable and corrosion-resistant passive film in corrosive media, composed of Fe and Co oxides. The strategy of enhancing the corrosion resistance of amorphous alloys through Co doping has been validated under extreme aquatic conditions, including high ion concentrations, elevated temperature and complex microbial environment. Moreover, the addition of Co helps maintain a high proportion of iron group elements, preserving the excellent magnetic properties and other advantages of Fe-based amorphous alloys. This dual-focus strategy, balancing practicality and functionality, holds significant value for engineering applications.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"190 ","pages":"Article 109173"},"PeriodicalIF":4.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146023898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

High mechanical and tribological performance and mechanisms of TiZrHfNbAlx refractory high-entropy alloys TiZrHfNbAlx耐火高熵合金的高力学和摩擦学性能及其机理

IF 4.8 2区材料科学

Intermetallics Pub Date : 2026-03-01 Epub Date: 2026-01-22 DOI: 10.1016/j.intermet.2026.109165

Yajuan Shi , Yi Wang

引用次数: 0