Intermetallics最新文献

Creep behavior and microstructural properties of a cast low-Ta-containing Ti-48Al-3Nb-1.5Ta alloy 低含ta铸态Ti-48Al-3Nb-1.5Ta合金蠕变行为及显微组织性能

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-30 DOI: 10.1016/j.intermet.2025.108795

Rui Hu, Zitong Gao, Hang Zou, Kewei Zhang

{"title":"Creep behavior and microstructural properties of a cast low-Ta-containing Ti-48Al-3Nb-1.5Ta alloy","authors":"Rui Hu, Zitong Gao, Hang Zou, Kewei Zhang","doi":"10.1016/j.intermet.2025.108795","DOIUrl":"10.1016/j.intermet.2025.108795","url":null,"abstract":"<div><div>This study investigated the creep behaviors and properties of a cast low-Ta-containing Ti-48Al-3Nb-1.5Ta (at.%) alloy with fine-grained nearly-lamellar (FGNL) microstructure in the condition of 800∼900 °C and 150–250 MPa. The stress exponent and creep activation energy were 2.0 and 395 kJ mol<sup>−1</sup>, respectively. The Ti-48Al-3Nb-1.5Ta alloy exhibited superior creep resistance, reaching the level of advanced TNM+ and TNB alloys. It was attributed to the high-temperature strengthening effect of Nb and Ta alloying, which impeded diffusion-dependent creep and reduced the stacking fault energy to suppress dislocation climb. Ta alloying elevated the brittle-ductile transition temperature (BDTT) to ∼850 °C under creep conditions. In addition, the Ti-48Al-3Nb-1.5Ta alloy showed good microstructural stability with no detectable precipitation of β(β<sub>o</sub>) and ω/τ phases during prolonged creep exposure. Compared to Nb, Ta alloying had a better high-temperature strengthening effect and a lower tendency to form ω/τ phases. Replacing some Nb with Ta can improve the microstructure stability while maintaining the creep resistance of the current TiAl-Nb alloy at 800–900 °C.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108795"},"PeriodicalIF":4.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886552","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 Bs nanocrystalline alloy with excellent soft magnetic properties achieved based on regulating amorphous matrix structure via two-step annealing 通过两步退火调节非晶态基体结构，获得了具有优异软磁性能的高硼纳米晶合金

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-30 DOI: 10.1016/j.intermet.2025.108813

Zhe Chen , Jingyu Wang , Xuanping Chen , Shujie Kang , Qianke Zhu , Kewei Zhang , Jifan Hu

{"title":"High Bs nanocrystalline alloy with excellent soft magnetic properties achieved based on regulating amorphous matrix structure via two-step annealing","authors":"Zhe Chen , Jingyu Wang , Xuanping Chen , Shujie Kang , Qianke Zhu , Kewei Zhang , Jifan Hu","doi":"10.1016/j.intermet.2025.108813","DOIUrl":"10.1016/j.intermet.2025.108813","url":null,"abstract":"<div><div>Mastering the intrinsic crystallization mechanism of structural evolution is the key to improving comprehensive soft magnetic properties. This study systematically investigated the effects of conventional annealing (CA) on the microstructure, crystallization behavior, and soft magnetic properties of the Fe<sub>81.3</sub>Si<sub>3–<em>x</em></sub>B<sub>10.7</sub>P<sub>3</sub>Cu<sub>1</sub>C<sub>1</sub>Ni<sub><em>x</em></sub> (<em>x</em> = 0, 0.7, 1.4, 2.1, and 2.8) alloy ribbons comparing with those subjected to two-step annealing (TSA). All ribbons exhibited good amorphous forming ability (AFA) and had a large annealing window (>110 K), assuring the control of the precipitation process of α-Fe nanocrystals. The atomic rearrangements at the pre-annealing stage of the structural relaxation increased the cluster nucleation density of the amorphous matrix. TSA significantly affected the coercivity (<em>H</em><sub>c</sub>), effective permeability (<em>μ</em><sub>e</sub>), and grain size (<em>D</em>). The Fe<sub>81.3</sub>Si<sub>3–<em>x</em></sub>B<sub>10.7</sub>P<sub>3</sub>Cu<sub>1</sub>C<sub>1</sub>Ni<sub>1.4</sub> alloy ribbon obtained using TSA exhibited excellent magnetic properties with a <em>B</em><sub>s</sub> of up to 1.82 T, a low <em>H</em><sub>c</sub> of 2.3 A/m, and a high <em>μ</em><sub>e</sub> of up to 12500 at 1 kHz, which was related to the wide and smooth magnetic domain structure. Therefore, these findings could provide a novel guide for performance optimization to meet the applications of miniaturized and high-frequency electronic components.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108813"},"PeriodicalIF":4.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143890817","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 existence of nishizawa horn in Co-Al system: Experimental study and thermodynamic assessment Co-Al体系中西泽角的存在：实验研究与热力学评价

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-30 DOI: 10.1016/j.intermet.2025.108810

Wei Yang , Peisheng Wang , Shuhong Liu

引用次数: 0

Microstructure and dynamic mechanical properties of an additive manufacturing titanium alloy by direct energy deposition 直接能量沉积增材制造钛合金的显微组织和动态力学性能

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-29 DOI: 10.1016/j.intermet.2025.108818

Yiyu Huang , Yechen Deng , Qi Wu , Yixin An , Bin Liu , Bingfeng Wang

{"title":"Microstructure and dynamic mechanical properties of an additive manufacturing titanium alloy by direct energy deposition","authors":"Yiyu Huang , Yechen Deng , Qi Wu , Yixin An , Bin Liu , Bingfeng Wang","doi":"10.1016/j.intermet.2025.108818","DOIUrl":"10.1016/j.intermet.2025.108818","url":null,"abstract":"<div><div>Additive manufacturing (AM), characterized by its rapid melting-cooling process, offers novel metallurgical pathways for developing advanced alloys. This study fabricated a novel multi-element titanium alloy using Ti-6Al-4V (Ti64) and NiCrFeCoMo<sub>0.2</sub> high-entropy alloy (HEA) powders via direct energy deposition (DED). Microstructural analysis revealed elemental segregation of HEA components at melt pool boundaries in Ti64+2HEA and Ti64+6HEA, whereas Ti64 + 16HEA exhibited uniform HEA distribution across melt pool boundaries. The Ti64 + 16HEA alloy comprised a single-phase β matrix with precipitates predominantly distributed along grain boundaries. Dynamic mechanical testing via split-Hopkinson pressure bar (SHPB) demonstrated exceptional performance in Ti64 + 16HEA, achieving a dynamic yield strength of 2116.6 MPa and a compressive ratio of 7.4 % at a strain rate of approximately 1260 s<sup>−1</sup>. During DED processing, Ti64 + 16HEA possessed a sufficient molybdenum equivalent (MoE) to stabilize the single-phase β structure. The incorporation of HEA into Ti64 introduced a complex alloying composition, mitigating the formation of singular brittle precipitates and thereby optimizing the alloy's strength-ductility synergy. Under dynamic deformation, the β matrix and its precipitates in Ti64 + 16HEA uniformly redistributed stress waves, enhancing strength while alleviating tensile stress concentration. This mechanism prevented premature failure, enabling an optimal balance between strength and ductility in Ti64 + 16HEA.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108818"},"PeriodicalIF":4.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886550","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

Enhanced plastic deformation in amorphous alloys via synergistic effects of hydrogen doping and rejuvenation 通过氢掺杂和回春的协同效应增强非晶合金的塑性变形

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-29 DOI: 10.1016/j.intermet.2025.108812

Zhao Yu, Peng Wang, Xuefeng Tang

{"title":"Enhanced plastic deformation in amorphous alloys via synergistic effects of hydrogen doping and rejuvenation","authors":"Zhao Yu, Peng Wang, Xuefeng Tang","doi":"10.1016/j.intermet.2025.108812","DOIUrl":"10.1016/j.intermet.2025.108812","url":null,"abstract":"<div><div>Amorphous alloys have gained substantial attention due to their exceptional physical and chemical properties. However, their brittleness at room temperature has limited their widespread application. This study investigated the synergistic effects of hydrogen doping and rejuvenation on the plastic deformation capability of amorphous alloys using molecular dynamics simulations. It was revealed that low contents of hydrogen doping can significantly enhance the plastic deformation capability of amorphous alloys. However, an excessive amount of hydrogen doping could lead to a reduction in both the strength and plasticity of amorphous alloys. Cyclic shear treatment promotes the rejuvenation of amorphous alloys by increasing free volume. The synergistic of hydrogen doping and rejuvenation could further improve the plasticity of amorphous alloys. Voronoi analysis reveals that the synergistic of hydrogen doping and rejuvenation induces the rearrangement of microstructure of amorphous alloys, reduces the content of ordered clusters and increases the proportion of disordered structures. Thereby the occupancy of hydrogen atoms and the overall energy state of amorphous alloys were affected. By controlling the content of hydrogen doping and the synergistic with cyclic shear rejuvenation, the mechanical properties of amorphous alloys can be effectively regulated, offering new insights for the application of amorphous alloys.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108812"},"PeriodicalIF":4.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886401","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

Achieving enhanced mechanical performance in a duplex eutectic Ni49Fe20Al17Cr8V6 high-entropy alloy with heterogeneous structure 在非均相组织的双共晶Ni49Fe20Al17Cr8V6高熵合金中实现了增强的力学性能

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-29 DOI: 10.1016/j.intermet.2025.108805

Xiangying Zhu , Ya Liu , Changjun Wu , Junxiu Chen , Hao Tu

{"title":"Achieving enhanced mechanical performance in a duplex eutectic Ni49Fe20Al17Cr8V6 high-entropy alloy with heterogeneous structure","authors":"Xiangying Zhu , Ya Liu , Changjun Wu , Junxiu Chen , Hao Tu","doi":"10.1016/j.intermet.2025.108805","DOIUrl":"10.1016/j.intermet.2025.108805","url":null,"abstract":"<div><div>Here, we prepared a Ni<sub>49</sub>Fe<sub>20</sub>Al<sub>17</sub>Cr<sub>8</sub>V<sub>6</sub> eutectic high-entropy alloy (EHEA) with dual phases by direct cast method. The as-cast EHEA exhibits dual-phase lamellar structure with soft FCC/L1<sub>2</sub> and hard B2 phases. Specifically, the as-cast EHEA shows an excellent mechanical performance, i.e., a high yield strength of ∼795 MPa, a high tensile strength of ∼1232 MPa and a large uniform elongation of ∼16.3 %. The optimized thermo-mechanical process, i.e., cold-rolling with a thickness reduction of ∼90 % and annealing at 775 °C for 2 h, was applied to the as-cast EHEA, architecting a heterogeneous structure in the studied EHEA. Distinctly, the yield strength increases significantly from ∼795 MPa to ∼1314 MPa, while the total elongation slightly decreases from ∼16.3 % to ∼15.5 %. Such excellent mechanical performance was mainly attributed to HDI strengthening, dislocation strengthening and interface strengthening. The strengthening strategy in this work indicates a promising potential for developing high-performance alloys in the future.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108805"},"PeriodicalIF":4.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882104","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

Low cycle fatigue behaviors and deformation mechanisms of the [011] oriented fourth-generation Nickel-based single crystal superalloy at 1000 °C [011]取向第四代镍基单晶高温合金1000℃低周疲劳行为及变形机制

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-26 DOI: 10.1016/j.intermet.2025.108808

Shida Huo , Yuhang Dai , Xinguang Wang , Zihao Tan , Zhaoyang Liang , Yanfei Liu , Yongmei Li , Xipeng Tao , Yan Tao , Chunhua Zhang , Song Zhang , Jinguo Li , Yizhou Zhou , Xiaofeng Sun

{"title":"Low cycle fatigue behaviors and deformation mechanisms of the [011] oriented fourth-generation Nickel-based single crystal superalloy at 1000 °C","authors":"Shida Huo , Yuhang Dai , Xinguang Wang , Zihao Tan , Zhaoyang Liang , Yanfei Liu , Yongmei Li , Xipeng Tao , Yan Tao , Chunhua Zhang , Song Zhang , Jinguo Li , Yizhou Zhou , Xiaofeng Sun","doi":"10.1016/j.intermet.2025.108808","DOIUrl":"10.1016/j.intermet.2025.108808","url":null,"abstract":"<div><div>The fourth-generation single crystal superalloy has excellent service performance at high temperature. In this work, the low cycle fatigue behaviors and deformation mechanisms of the [011] oriented fourth-generation Ni-based single crystal superalloy was systematically investigated at 1000 °C. The alloy exhibited a cyclic stable behavior under strain amplitude of 0.5 %. However, under strain amplitude of 0.7 % and 0.8 %, the alloy exhibited a cycle hardening behavior. Afterwards, the crack initiation could be attributed to the exfoliation of the oxidation layers under strain amplitude of 0.5 %. As the strain amplitude increases to 0.7 % and 0.8 %, the crack initiation was mainly observed near the cast pores. Moreover, it could be seen that slip bands sheared both γ and γ′ phases in the vicinity of the fracture surface under different strain amplitudes. The cycle hardening behavior was attributed to the formation of SFs with different directions and inhomogeneous dislocation networks. In addition, the cycle softening behavior was attributed to the formation of bowing dislocations and super-dislocations. The phenomenon of dislocations movement led to the severe plastic deformation, thereby reducing the LCF life. This work and resulting experimental date guide the engineering application of the fourth-generation single crystal superalloy in the future.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108808"},"PeriodicalIF":4.3,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876623","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

Significant low-temperature conventional and inverse magnetocaloric effects in ErSb and HoSb compounds ErSb和HoSb化合物中显著的低温常规和逆磁热效应

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-25 DOI: 10.1016/j.intermet.2025.108807

Zhaoxing Wang , Mahdi Feizpour , Yikun Zhang , Paul McGuiness , Darja Feizpour , Matjaž Godec , Lingwei Li

{"title":"Significant low-temperature conventional and inverse magnetocaloric effects in ErSb and HoSb compounds","authors":"Zhaoxing Wang , Mahdi Feizpour , Yikun Zhang , Paul McGuiness , Darja Feizpour , Matjaž Godec , Lingwei Li","doi":"10.1016/j.intermet.2025.108807","DOIUrl":"10.1016/j.intermet.2025.108807","url":null,"abstract":"<div><div>The low-temperature magnetocaloric (MC) effects in many rare-earth (<em>RE</em>)-dominated solid-state magnets were extensively studied in recent years to develop high-performance MC materials for magnetic cooling application and deepen clarifying their underlying magnetic characters. We herein synthesized two single-phased <em>RE</em>-dominated magnetic solids, namely the ErSb and HoSb compounds, by the induction-melting method and experimentally unveiled their structural and magnetic properties, specifically their magnetic phase transition and low-temperature MC properties. Both compounds crystallize in the NaCl-type cubic structure (<em>Fm</em>-3<em>m</em> space group) with a uniform microstructure and exhibit low-temperature antiferromagnetic (AFM) ordering at approximately 3.7 K and 5.5 K for the ErSb and HoSb compounds, respectively. Meanwhile, they exhibit significant low-temperature conventional and inverse low-temperature MC effects, attributed to their AFM ground state and unique, first-order field-induced magnetic phase transition (MPT). Moreover, we identified their conventional MC performance using the magnetic entropy change/temperature-averaged entropy change (5 K-lift) and refrigerant capacity, which are 20.8/19.2 J/kg·K and 214.3 J/kg for ErSb, and 22.3/21.5 J/kg·K and 256.6 J/kg for HoSb, respectively. These MC parameters of ErSb and HoSb are comparable to most known high-performance low-temperature <em>RE</em>-dominated MC materials, making them attractive candidates for practical cooling application.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108807"},"PeriodicalIF":4.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869777","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

Development of new all–metal FeCoZrAl amorphous alloys for room–temperature magnetic refrigeration application 室温磁制冷用新型全金属FeCoZrAl非晶合金的研制

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-24 DOI: 10.1016/j.intermet.2025.108809

Xueru Fan , Hangboce Yin , Qiang Li , Juntao Huo , Chuntao Chang

{"title":"Development of new all–metal FeCoZrAl amorphous alloys for room–temperature magnetic refrigeration application","authors":"Xueru Fan , Hangboce Yin , Qiang Li , Juntao Huo , Chuntao Chang","doi":"10.1016/j.intermet.2025.108809","DOIUrl":"10.1016/j.intermet.2025.108809","url":null,"abstract":"<div><div>This study introduces the development of a novel, all–metal Fe<sub>88</sub>Co<sub>4</sub>Zr<sub>7</sub>Al<sub>1</sub> amorphous alloy designed for room–temperature magnetic refrigeration application, highlighting the potential of all–metal Fe–based amorphous alloys in magnetic refrigeration applications. By innovatively adjusting the Curie temperature and enhancing the saturation magnetic flux density through Co addition, this work pioneers a strategy to develop all–metal Fe–based amorphous alloys with room–temperature magnetocaloric effect, historically focused on Fe–metalloid configurations with limited breakthroughs. The all–metal Fe<sub>88</sub>Co<sub>4</sub>Zr<sub>7</sub>Al<sub>1</sub> amorphous alloy, synthesized via a melt–spinning technique, demonstrates exceptional magnetocaloric effect properties, including a Curie temperature of 303 K, a maximum isothermal magnetic entropy change of 3.23 J kg<sup>−1</sup>·K<sup>−1</sup>, and the refrigerant capacity of 650 J kg<sup>−1</sup> under an applied magnetic field change of 5 T. These properties, combined with negligible hysteresis loss and lower costs due to the absence of rare earth elements, position the alloy as a promising candidate for room–temperature magnetic refrigerants.</div></div>","PeriodicalId":331,"journal":{"name":"Intermetallics","volume":"183 ","pages":"Article 108809"},"PeriodicalIF":4.3,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143869776","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

Achieving superior strength–ductility synergy in refractory high entropy alloy 在难熔高熵合金中实现优异的强度-延性协同

IF 4.3 2区材料科学

Intermetallics Pub Date : 2025-04-22 DOI: 10.1016/j.intermet.2025.108794

Mingjun Qiu , Ping Huang , Chao Gu , Fei Wang

引用次数: 0