International Journal of Refractory Metals & Hard Materials最新文献_第3页

Crack suppression in LPBF-processed W-ta-C alloys: Synergistic roles of alloying and HIP-induced self-healing lpbf加工W-ta-C合金的裂纹抑制：合金化和hip诱导自愈的协同作用

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-13 DOI: 10.1016/j.ijrmhm.2025.107444

Menghan Ma , Shubo Zhang , Kailun Li , Wenjing Zhang , Xihe Liu , Ang Li , Wei Liu , Chao Xu , Mingshen Li , Yiming Niu , Wei Liu

{"title":"Crack suppression in LPBF-processed W-ta-C alloys: Synergistic roles of alloying and HIP-induced self-healing","authors":"Menghan Ma , Shubo Zhang , Kailun Li , Wenjing Zhang , Xihe Liu , Ang Li , Wei Liu , Chao Xu , Mingshen Li , Yiming Niu , Wei Liu","doi":"10.1016/j.ijrmhm.2025.107444","DOIUrl":"10.1016/j.ijrmhm.2025.107444","url":null,"abstract":"<div><div>Tungsten (W) is a critical material for plasma-facing components in nuclear fusion reactors due to its excellent properties in extreme environment. Research on W and W alloys via Laser Powder Bed Fusion (LPBF) has received widespread attention because of high-degree freedom and integrated forming. However, fabricating crack-free W and W alloys via LPBF remains a challenge, primarily due to the high residual stresses during LPBF, weak connections at high-angle grain boundaries, and limited plastic deformation capacity because of the intrinsic brittleness of W. In this study, W-Ta-C alloys were fabricated by incorporating TaC into pure W via LPBF in situ alloying, to investigate the effects of TaC on microstructure evolution, crack suppression and crack healing. The addition of TaC induced eutectic reaction, promoted grain refinement and decreased the Peierls-Nabarro stress for dislocation motion, thereby suppressing crack nucleation and propagation. Furthermore, a strategy to reduce the crack density through a self-healing mechanism was developed, which is achieved by dissolution and reprecipitation of carbides during hot isostatic pressing (HIP). After HIP treatment, most cracks were healed, resulting in an 88 % reduction in crack density compared to as-printed samples, ultimately achieving nearly crack-free LPBF-fabricated W alloy.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107444"},"PeriodicalIF":4.6,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106774","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-temperature isothermal oxidation behavior of the mechanically alloyed Nb–Ti–Si refractory alloy in air and N2 atmosphere 机械合金化Nb-Ti-Si耐火合金在空气和N2气氛中的高温等温氧化行为

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-13 DOI: 10.1016/j.ijrmhm.2025.107446

Hansung Lee , Deokhyun Han , Sheetal Kumar Dewangan , Jungjoon Kim , Sangmin Yoon , Youngkyun Kim , Gyosik Youn , Byungmin Ahn

{"title":"High-temperature isothermal oxidation behavior of the mechanically alloyed Nb–Ti–Si refractory alloy in air and N2 atmosphere","authors":"Hansung Lee , Deokhyun Han , Sheetal Kumar Dewangan , Jungjoon Kim , Sangmin Yoon , Youngkyun Kim , Gyosik Youn , Byungmin Ahn","doi":"10.1016/j.ijrmhm.2025.107446","DOIUrl":"10.1016/j.ijrmhm.2025.107446","url":null,"abstract":"<div><div>In this study, an Nb<img>Si alloy was synthesized by mechanical alloying and subsequently consolidated via spark plasma sintering (SPS) at 1400 °C to investigate its high-temperature oxidation behavior. The alloy was subjected to thermogravimetric–differential thermal analysis (TG–DTA) at 1300 °C for 100 h under a nitrogen atmosphere to assess its long-term thermal stability and oxidation resistance. Post-oxidation characterization was performed using scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD) to examine surface morphology and cross-sectional features. A stable oxide scale with a compact and uniform microstructure was observed, indicating controlled oxidation kinetics. Cross-sectional analysis revealed limited inward diffusion and a well-adhered oxide layer, confirming excellent oxidation resistance at elevated temperatures. These results demonstrate that the SPS-processed Nb<img>Si alloy demonstrates favorable high-temperature stability under inert conditions, highlighting its potential for structural applications in extreme environments.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107446"},"PeriodicalIF":4.6,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106715","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

Microstructural characterization of Wcu composite deposition on mild steel fabricated via plasma transferred arc welding 等离子转移弧焊制备低碳钢Wcu复合镀层的显微组织表征

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-12 DOI: 10.1016/j.ijrmhm.2025.107445

Muhammad Hussain , Bosheng Dong , Zhijun Qiu , Ulf Garbe , Zengxi Pan , Huijun Li

{"title":"Microstructural characterization of Wcu composite deposition on mild steel fabricated via plasma transferred arc welding","authors":"Muhammad Hussain , Bosheng Dong , Zhijun Qiu , Ulf Garbe , Zengxi Pan , Huijun Li","doi":"10.1016/j.ijrmhm.2025.107445","DOIUrl":"10.1016/j.ijrmhm.2025.107445","url":null,"abstract":"<div><div>In this study, a tungsten‑copper (W<img>Cu) composite was successfully deposited on mild steel substrate using a novel technique—Plasma Transferred Arc (PTA) welding. Spherical W and Cu powders were employed, and the resulting microstructural characteristics on a mild steel substrate were thoroughly analysed. Key PTA process parameters were established and found to significantly influence microstructural evolution. Notably, iron (Fe) dilution from the base metal markedly altered the composite's microstructure, and grain boundary diffusion of Cu into the mild steel substrate was observed. The size and morphology of W powder were found to affect the homogeneity and porosity of the deposited layer. X-ray diffraction and EDS point analysis revealed the formation of a new intermetallic phase, Fe₇W₆, around W particles. For the first time, a new intermetallic phase FeW was also confirmed by point EDS analysis. The intermetallic phase Fe₇W₆ was further confirmed by transmission electron microscopy (TEM) diffraction, indicating its stability at room temperature. Higher hardness values of the intermetallic phase were compared to other phases present in the composite.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107445"},"PeriodicalIF":4.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106698","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 transverse magnetic field on the directional solidification structure and segregation behavior of Co-Al-W-based superalloy 横向磁场对co - al - w基高温合金定向凝固组织及偏析行为的影响

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-12 DOI: 10.1016/j.ijrmhm.2025.107443

Jiang Zhang , Chao Zhang , Zhi-Bin Yang , Jian-Bo Yu , Jie Huang , Jun-Feng Li

{"title":"Effects of transverse magnetic field on the directional solidification structure and segregation behavior of Co-Al-W-based superalloy","authors":"Jiang Zhang , Chao Zhang , Zhi-Bin Yang , Jian-Bo Yu , Jie Huang , Jun-Feng Li","doi":"10.1016/j.ijrmhm.2025.107443","DOIUrl":"10.1016/j.ijrmhm.2025.107443","url":null,"abstract":"<div><div>Directional solidification experiments were conducted on the <em>Co</em>-<em>Al</em>-W-based superalloy under an external magnetic field. The results showed that depression occurred on the right side of the solid-liquid interface at a pulling rate of 5 μm/s, and the <em>Al</em> solute segregated to this side. Spotty segregation also occurred on the sample's right side, and applying an external magnetic field reduced the primary dendrite arm spacing. After the pulling rate reached 50 μm/s, the magnetic field barely had any influence on the solid-liquid interface of the alloy. The primary dendrite arm spacing did not decrease further as the magnetic flux density increased beyond a certain point. This observation could be explained by the shortened action of the thermoelectromagnetic flow in the interdendritic space at an increasing pulling rate under a transverse magnetic field. At a pulling rate of 5 μm/s, the solid-liquid interface and the flow state of the interdendritic melt were altered during the solidification process with an external magnetic field than without one. Moreover, the melt flow had a significant impact on the alloy microstructure, as a result of thermoelectromagnetic convection along the solid-liquid interface induced by the magnetic field. A magnetic field dramatically intensified thermoelectromagnetic convection, facilitating interdendritic melt flow and continuously reducing the primary dendrite arm spacing.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107443"},"PeriodicalIF":4.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106770","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

Ti2AlN MAX phase: An attractive choice for the improvement of mechanical and tribological behavior of ZrB2 Ti2AlN MAX相是改善ZrB2材料力学性能和摩擦学性能的理想选择

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-12 DOI: 10.1016/j.ijrmhm.2025.107441

Zohre Ahmadi , Mohammad Farvizi , Arash Faraji , Milad Bahamirian , Pouria Amini , Mehdi Shahedi Asl

{"title":"Ti2AlN MAX phase: An attractive choice for the improvement of mechanical and tribological behavior of ZrB2","authors":"Zohre Ahmadi , Mohammad Farvizi , Arash Faraji , Milad Bahamirian , Pouria Amini , Mehdi Shahedi Asl","doi":"10.1016/j.ijrmhm.2025.107441","DOIUrl":"10.1016/j.ijrmhm.2025.107441","url":null,"abstract":"<div><div>Most of the engineering ceramics, including ZrB<sub>2</sub>, suffer from poor sinterability, which originates from their strong covalent bonding. Therefore, different additives should be added to these ceramics to improve their mechanical and physical properties. In this study, 10 wt% Ti<sub>2</sub>AlN MAX phase was added to the ZrB<sub>2</sub> matrix, and the samples were sintered using the spark plasma sintering (SPS) method. The density measurement confirmed that the addition of Ti<sub>2</sub>AlN to the ZrB<sub>2</sub> matrix notably enhanced densification and reduced porosity. The microstructural analysis revealed that, although a portion of the Ti<sub>2</sub>AlN MAX phase remained in the microstructure, partial decomposition to an aluminum-based oxynitride phase had also occurred. The density measurement indicated that the incorporation of Ti<sub>2</sub>AlN increased the relative density from 80 % to 98 %. The mechanical analysis showed the positive effect of the MAX phase on ZrB<sub>2</sub> performance. For example, the fracture toughness increased from 2.0 MPa.m<sup>1/2</sup> for ZrB<sub>2</sub> to 5.3 MPa.m<sup>1/2</sup> for ZrB<sub>2</sub>–10 wt% Ti<sub>2</sub>AlN sample. This behavior can be correlated to the evolution of toughening mechanisms such as crack deflection, bridging, and grain refinement. The wear tests indicated that the wear rate for the ZrB<sub>2</sub> sample was 3.63 × 10<sup>−4</sup> mm<sup>3</sup>/N.m, which decreased to 3.26 × 10<sup>−4</sup> mm<sup>3</sup>/N.m with the addition of 10 wt% Ti<sub>2</sub>AlN. This enhancement was primarily due to the improvement in mechanical properties, particularly in fracture toughness. The wear mechanisms of the samples, before and after the Ti<sub>2</sub>AlN addition, were also thoroughly studied.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107441"},"PeriodicalIF":4.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106771","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

Microstructure and texture evolution of β-air cooled commercial-purity zirconium during rolling β-空冷工业纯锆轧制过程中的组织与织构演变

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-12 DOI: 10.1016/j.ijrmhm.2025.107442

Xiaotong Zhao, Linjiang Chai, Hongliang Liu, Yufan Zhu, Shan Luo, Chaodan Hu

{"title":"Microstructure and texture evolution of β-air cooled commercial-purity zirconium during rolling","authors":"Xiaotong Zhao, Linjiang Chai, Hongliang Liu, Yufan Zhu, Shan Luo, Chaodan Hu","doi":"10.1016/j.ijrmhm.2025.107442","DOIUrl":"10.1016/j.ijrmhm.2025.107442","url":null,"abstract":"<div><div>To explore the microstructure and texture evolution of β-air cooled (β-AC) commercial-purity zirconium during rolling, a β-AC zirconium sheet was rolled at room temperature to various reductions (5–50 %) and then subjected to detailed characterizations utilizing electron channeling contrast imaging (ECCI) and electron backscatter diffraction (EBSD) techniques. The results reveal that the initial β-AC sheet exhibits a typical Widmanstätten structure with scattered orientations, which undergoes significant microstructure and texture changes during subsequent rolling. At reduction <20 %, the density of deformation twin increases with higher strains, leading to continuous refinement of the initial coarse lath structures. Meanwhile, texture components with grain c-axes inclined ±30–40° from normal direction (ND) toward transverse direction (TD) or parallel to TD (c//TD) are gradually developed. At reduction >20 %, new twins are no longer formed and dislocation slip becomes the predominant deformation mode, allowing a strong basal texture with most c-axes parallel to ND (c//ND) to be eventually developed. After the rolling reduction reaches 50 %, the average grain size decreases from 20.5 ± 17.5 μm to 3.3 ± 4.0 μm, along with specimen hardness enhanced from 172.3 ± 6.8 HV to 278.5 ± 5.3 HV. Detailed analyses reveal that the hardness enhancement in the rolled specimens is primarily attributed to grain-refinement and dislocation strengthening. The rolling texture could also make a significant contribution to hardening, particularly when the deformation amount is relatively high.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107442"},"PeriodicalIF":4.6,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106775","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

Ternary phase induced microstructure regulation and strengthening in (W, Ti)C-Co cermet materials containing hBN 含hBN的（W, Ti）C-Co陶瓷材料的三元诱导组织调控与强化

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-11 DOI: 10.1016/j.ijrmhm.2025.107434

Jinwen Cai , Zhongwei Wang , Wei Wang , Juanqiang Ding , XiaoYing Cao , Longgang Wang , Ziqing Xiong , Xiang Xia , Lei Liang , Tianen Yang , Guang Xian , Zhixing Guo

{"title":"Ternary phase induced microstructure regulation and strengthening in (W, Ti)C-Co cermet materials containing hBN","authors":"Jinwen Cai , Zhongwei Wang , Wei Wang , Juanqiang Ding , XiaoYing Cao , Longgang Wang , Ziqing Xiong , Xiang Xia , Lei Liang , Tianen Yang , Guang Xian , Zhixing Guo","doi":"10.1016/j.ijrmhm.2025.107434","DOIUrl":"10.1016/j.ijrmhm.2025.107434","url":null,"abstract":"<div><div>The application of (W, Ti)C-Co cermet materials in harsh environments is constrained, necessitating further performance enhancement. In this study, (W, Ti)C-25 wt% Co samples with 0, 0.5, 1.0, 1.5, and 2 wt% hBN were fabricated via vacuum liquid-phase sintering. Phase evolution, grain boundary and phase interface characteristics and their correlation with properties were comprehensively analyzed via XRD, SEM, EDS, and EBSD. Results show that hBN addition induces the formation of a ternary W<sub>2</sub>Co<sub>21</sub>B<sub>6</sub> phase. This new phase consumes W from (W, Ti)C and Co from the binder, which induces rightward shifts in (111) diffraction peaks of both phases. Microstructural analysis reveals transition of hard phase morphology toward equiaxed morphologies with reduced grain sizes, indicating grain growth inhibition effect of hBN. Crucially, hBN modifies grain boundary characteristics. With 1 wt% hBN addition, ultra-low-energy Σ3 boundaries partially convert to medium-energy Σ9 boundaries while preserving overall low-Σ (3 ≤ Σ ≤ 29) boundary density, enabling simultaneous enhancement of hardness (4.5 %) and fracture toughness (14.68 %). Larger addition of hBN promotes detrimental transformation of low-Σ boundaries to high-energy random configurations, causing precipitous toughness decline (24.6 %) despite maximum hardness gain (8.91 %). Furthermore, hBN reduces friction coefficients effectively with abrasive wear as the main failure mechanism, though wear rate first increases then decreases due to the changes in the generation of W<sub>2</sub>Co<sub>21</sub>B<sub>6</sub>. Overall, hBN optimizes properties via phase evolution, grain boundary and phase interface modification.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107434"},"PeriodicalIF":4.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106769","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

Lattice misfit-dominated solid solution strengthening in V-Nb-Ta-Ti refractory multi-principal element alloys demonstrated by high-throughput characterization 高通量表征证明了V-Nb-Ta-Ti难熔多主元素合金中晶格错配主导的固溶强化

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-11 DOI: 10.1016/j.ijrmhm.2025.107440

Xiaoyang Zhou , Jin Lü , Yaguang Dong , Qing Han , Xun Guo , Di Wan , Ke Jin , Yunfei Xue

{"title":"Lattice misfit-dominated solid solution strengthening in V-Nb-Ta-Ti refractory multi-principal element alloys demonstrated by high-throughput characterization","authors":"Xiaoyang Zhou , Jin Lü , Yaguang Dong , Qing Han , Xun Guo , Di Wan , Ke Jin , Yunfei Xue","doi":"10.1016/j.ijrmhm.2025.107440","DOIUrl":"10.1016/j.ijrmhm.2025.107440","url":null,"abstract":"<div><div>This study investigates the solid solution strengthening (SSS) mechanisms in refractory multi-principal element alloys (RMPEAs) by developing a novel cladding melting-diffusion synthesis strategy. This strategy enables the fabrication of gradient-composition diffusion couples within the V-Nb-Ta-Ti system, effectively alleviating experimental uncertainties arising from variations in interstitial impurities and grain orientations across different samples. Comparative analyses of two representative binary couples, i.e., V<img>Nb (featuring significant lattice mismatch but minor modulus mismatch) and Nb<img>Ta (exhibiting minor lattice mismatch but significant modulus mismatch), reveal that lattice mismatch predominates the SSS effects in this alloy system. Furthermore, predictions based on the Toda-Caraballo model are compared with the nanoindentation measurements, underscoring the substantial impact of V addition owing to its pronounced lattice mismatch with other principal elements. Consequently, peak hardness (∼5.0 GPa) is observed near the V<sub>50</sub>Nb<sub>25</sub>Ta<sub>25</sub> composition. Although the direct contribution of modulus mismatch to SSS is determined to be marginal in this system, its synergistic incorporation enhances the model's predictive accuracy. Tensile tests conducted on typical equiatomic alloys yield results consistent with nanoindentation data. Moreover, by analyzing over 700 nanoindentation data points, the optimal dislocation proportionality coefficient is determined as <em>α</em> = 9. This work proposes an effective high-throughput method for investigating compositional effects in alloys sensitive to interstitial impurities, and unveil the key mechanism governing SSS in V-Nb-Ta-Ti RMPEAs, thereby providing valuable guidance for future alloy design.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107440"},"PeriodicalIF":4.6,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106772","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

Rapid preparation of TiC by joule heating synthesis: Efficient photothermal conversion and infrared stealth applications 焦耳加热合成快速制备TiC：高效光热转换及红外隐身应用

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-10 DOI: 10.1016/j.ijrmhm.2025.107439

Xiangyu Ma, Zhaohe Jiang, Shaotian Qi, Lixin Feng, Kun Chen, Dong Liu

{"title":"Rapid preparation of TiC by joule heating synthesis: Efficient photothermal conversion and infrared stealth applications","authors":"Xiangyu Ma, Zhaohe Jiang, Shaotian Qi, Lixin Feng, Kun Chen, Dong Liu","doi":"10.1016/j.ijrmhm.2025.107439","DOIUrl":"10.1016/j.ijrmhm.2025.107439","url":null,"abstract":"<div><div>In response to the operational challenges of military electronic devices in low-temperature environments and the demand for infrared stealth technology in military applications, this study employs the Joule heating method to rapidly synthesize TiC materials integrating photothermal conversion and infrared stealth capabilities. High-quality TiC can be produced within just 2 min using this approach. Experimental results demonstrate that the TiC prepared via this method exhibits exceptional thermal stability, optical stability, and favorable morphological characteristics. When compounded with epoxy resin, the resulting composite material achieves a maximum temperature of 67 °C under xenon lamp irradiation, with a photothermal conversion efficiency reaching 64.5 %. Infrared stealth tests further confirm that the TiC-epoxy composite possesses excellent infrared stealth performance, with an infrared absorption rate as high as 94.7 %. This research provides a viable foundation for the large-scale, environmentally sustainable production of military-grade materials that combine photothermal conversion and infrared stealth functionalities.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107439"},"PeriodicalIF":4.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047165","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

Preparation of fine-grained WC-4Co cemented carbides cutting tools with engineered surface micro-features by SPS and performance analysis 采用SPS制备具有工程表面微特征的WC-4Co硬质合金刀具并进行性能分析

IF 4.6 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-09-10 DOI: 10.1016/j.ijrmhm.2025.107435

Sheng Wang, Zhenhua Wang, Linyan Liu, Daqin Tang, Chaohui Yin, Xin Shangguan

{"title":"Preparation of fine-grained WC-4Co cemented carbides cutting tools with engineered surface micro-features by SPS and performance analysis","authors":"Sheng Wang, Zhenhua Wang, Linyan Liu, Daqin Tang, Chaohui Yin, Xin Shangguan","doi":"10.1016/j.ijrmhm.2025.107435","DOIUrl":"10.1016/j.ijrmhm.2025.107435","url":null,"abstract":"<div><div>WC-Co cemented carbides, renowned for their excellent wear resistance and impact toughness, are considered ideal materials for cutting tools. A novel rapid preparation method based on spark plasma sintering (SPS) is introduced to efficiently produce fine-grained cemented carbide cutting tools with engineered surface micro-features. The effects of compaction parameters (compaction pressure, holding time) and sintering parameters (sintering temperature, dwell time) on the microstructure, mechanical properties, and shape retention were systematically investigated in WC-4Co fine-grained cemented carbides. The results demonstrate that compaction at 3.0 × 10<sup>3</sup> kg with a 60-min holding time optimized green density (53.67 %) and shape fidelity (>90 %), thereby preventing crack formation induced by high pressure and extended duration. Sintering at 1350 °C for 10 min yielded optimal overall properties (hardness: 19.12 GPa; fracture toughness: 8.47 MPa·m<sup>1/2</sup>) while effectively suppressing abnormal WC grain growth. The η phase (Co<sub>3</sub>W<sub>3</sub>C) was found to accumulate exclusively on the surface and could be effectively eliminated through polishing. Turning experiments show that the main cutting force, feed force, passive force and cutting temperature of micro texture tools are reduced by 4.95–14.58 %, 13.35–26.72 %, 7.65–27.25 % and 4.21–9.82 % respectively compared with non-texture tools. The micro-texture on the front cutting surface also effectively prevents the formation of chip accumulation. This research provides both a theoretical foundation and technical support for the efficient production of high-performance micro-textured cutting tools.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"134 ","pages":"Article 107435"},"PeriodicalIF":4.6,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047167","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