International Journal of Refractory Metals & Hard Materials最新文献_第2页

Effect of metal combined with non-metallic additives on the microstructure and properties of B4C ceramics via pressureless sintering 金属与非金属添加剂复合对无压烧结B4C陶瓷显微组织和性能的影响

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-23 DOI: 10.1016/j.ijrmhm.2025.107205

Jiaxing Li , Xiuyi Chen , Lu Tang , Xinyan Yue , Hongqiang Ru

{"title":"Effect of metal combined with non-metallic additives on the microstructure and properties of B4C ceramics via pressureless sintering","authors":"Jiaxing Li , Xiuyi Chen , Lu Tang , Xinyan Yue , Hongqiang Ru","doi":"10.1016/j.ijrmhm.2025.107205","DOIUrl":"10.1016/j.ijrmhm.2025.107205","url":null,"abstract":"<div><div>This paper studies the effect of Ti combined with different non-metallic sintering additives (Y<sub>2</sub>O<sub>3</sub>, ZrO<sub>2</sub>, TiO<sub>2</sub>, SiC) on the microstructure and mechanical properties of pressureless sintered B<sub>4</sub>C. B<sub>4</sub>C ceramics were successfully prepared by pressureless sintering at 2000 °C. The phase composition, microstructure and mechanical properties of the samples were analyzed. The results indicate that different non-metallic sintering additives exert distinct influences on the mechanical properties of B<sub>4</sub>C ceramics, and their toughening mechanisms are also different. Additionally, TiB<sub>2</sub> and ZrB<sub>2</sub> formed in situ during the sintering process form the (Zr, Ti)B<sub>2</sub> solid solution, which significantly enhancing the fracture toughness and hardness of B<sub>4</sub>C ceramics. In this study, the sample with 2.5 wt% Ti, 3 wt% carbon black and 10 wt% SiC showed the best properties. The relative density, Vickers hardness, fracture toughness and flexural strength were 94.4 %, 28.9 GPa, 3.58 MPa·m<sup>1/2</sup> and 221 MPa, respectively.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"131 ","pages":"Article 107205"},"PeriodicalIF":4.2,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143882869","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}

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Preparation, microstructure and mechanical properties of a Ce-PSZ reinforced molybdenum alloy Ce-PSZ增强钼合金的制备、显微组织及力学性能

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-20 DOI: 10.1016/j.ijrmhm.2025.107204

Fengshun Du , Bohua Duan , Dezhi Wang , Zhuangzhi Wu , Xinli Liu

{"title":"Preparation, microstructure and mechanical properties of a Ce-PSZ reinforced molybdenum alloy","authors":"Fengshun Du , Bohua Duan , Dezhi Wang , Zhuangzhi Wu , Xinli Liu","doi":"10.1016/j.ijrmhm.2025.107204","DOIUrl":"10.1016/j.ijrmhm.2025.107204","url":null,"abstract":"<div><div>Improving the poor plasticity and fracture toughness of molybdenum alloys is the key to expanding their industrial applications. In this experiment, a cerium partially stabilized zirconia (Ce-PSZ) reinforced molybdenum alloy with outstanding properties was obtained by combining the hydrothermal method and the powder metallurgy technology. This study investigated how varying Ce-PSZ content influences the microstructure and mechanical properties of Mo/Ce-PSZ alloys. The results show that with increasing Ce-PSZ addition, the relative density and hardness of the alloys gradually increase, while the tensile strength, plasticity, and fracture toughness exhibit a tendency to initially increase and subsequently decrease. When 1.5 wt% of Ce-PSZ is added, the Mo alloys achieve excellent overall mechanical properties, with an ultimate tensile strength of 528.5 MPa, elongation of 29.3 %, and fracture toughness of 38.5 MPa∙m<sup>1/2</sup>. These values are about 22.7 %, 22.5 %, and 83.3 % higher than those of pure molybdenum. The substantial enhancement in elongation and fracture toughness can be predominantly ascribed to the refinement of grains and the stress-induced Ce-PSZ phase transformation. This research provides a novel method for the preparation of molybdenum alloys with high fracture toughness and elongation.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"131 ","pages":"Article 107204"},"PeriodicalIF":4.2,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863671","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 feedpowder morphology on microstructure and mechanical properties of Tantalum produced by cold spray additive manufacturing 给粉形貌对冷喷涂增材制造钽显微组织和力学性能的影响

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-20 DOI: 10.1016/j.ijrmhm.2025.107203

Lang Cui , Guohui Xu , Kai Liu , Jianjie Hao , Jian Zhao , Jing Cui , Guang Liu , Enkang Hao , Jie Zou

{"title":"Influence of feedpowder morphology on microstructure and mechanical properties of Tantalum produced by cold spray additive manufacturing","authors":"Lang Cui , Guohui Xu , Kai Liu , Jianjie Hao , Jian Zhao , Jing Cui , Guang Liu , Enkang Hao , Jie Zou","doi":"10.1016/j.ijrmhm.2025.107203","DOIUrl":"10.1016/j.ijrmhm.2025.107203","url":null,"abstract":"<div><div>In this study, two types of tantalum powders were deposited using cold spray additive manufacturing (CSAM). We focused on comparing the effects of hydride-dehydride polygonal tantalum powder (A-Ta) and plasma-atomized spherical tantalum powder (S<img>Ta) on the microstructure, mechanical properties, and tribological performance of the resulting deposits. Results revealed that under identical spraying conditions, A-Ta powder achieved a higher deposition efficiency (DE) of 86 %, compared to 61 % for S<img>Ta powder. Both deposits demonstrated low porosity; however, the A-Ta deposit exhibited significantly superior mechanical properties, with a tensile strength of 350 MPa, approximately 2.1 times higher than the S<img>Ta deposit. Moreover, the A-Ta deposit showed enhanced wear resistance. At a heat flux density of 2.4 MW/m<sup>2</sup>, the A-Ta deposit demonstrated excellent ablation resistance, exhibiting a linear ablation rate of only −0.0012 μm/s after a 10-s exposure. These findings highlight the considerable potential of low-cost polygonal A-Ta powder for high-temperature ablation protection applications, establishing it as a promising candidate for CSAM of tantalum layers.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"131 ","pages":"Article 107203"},"PeriodicalIF":4.2,"publicationDate":"2025-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863670","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

Semimetal P-6m2-WP with high hardness and superconductivity 具有高硬度和超导性的半金属P-6m2-WP

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-19 DOI: 10.1016/j.ijrmhm.2025.107187

Yingying Chen , Zheng Ma , Xilong Dou , Gang Jiang

引用次数: 0

Effect of Si additions on the oxidation behavior of AlMo0.5NbTiVSix refractory high-entropy alloys at 1073 K Si添加量对AlMo0.5NbTiVSix难熔高熵合金1073 K氧化行为的影响

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-19 DOI: 10.1016/j.ijrmhm.2025.107198

Wentao Jiang , Tiantian Wang , Xiaohong Wang , Bo Jiang , Xin Wang , Ye Wang , Hongyu Xu , Maoliang Hu , Dongdong Zhu

{"title":"Effect of Si additions on the oxidation behavior of AlMo0.5NbTiVSix refractory high-entropy alloys at 1073 K","authors":"Wentao Jiang , Tiantian Wang , Xiaohong Wang , Bo Jiang , Xin Wang , Ye Wang , Hongyu Xu , Maoliang Hu , Dongdong Zhu","doi":"10.1016/j.ijrmhm.2025.107198","DOIUrl":"10.1016/j.ijrmhm.2025.107198","url":null,"abstract":"<div><div>In this study, AlMo<sub>0.5</sub>NbTiVSi<sub>x</sub> (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5) refractory high-entropy alloys were fabricated by vacuum arc-melting, and the effects of Si on the oxidation resistance were systematically investigated. The results indicate that the oxidation behavior of alloys without Si addition primarily involved metal-gas interface reactions and solid-solution diffusion through the oxide layer. After the introduction of the Si element, Si formed the M<sub>5</sub>Si<sub>3</sub>-type intermetallic compound phase with Ti and Nb attributed to their strong bonding ability and acted as a short-circuit diffusion channel, contributing to the accelerated corrosion of oxygen on the interior of the alloy during the oxidation process. In addition to the metal-gas interface reaction and solid-solution diffusion through the oxide layer, the oxidation behavior of Si-containing RHEAs in our study also comprised the influence of the phase interface, suggesting that the nucleation sites of the oxide included the phase interface between BCC and M<sub>5</sub>Si<sub>3</sub> phase. High Si content was not conducive to the antioxidant performance of RHEAs. Furthermore, the oxidation products and mechanisms of AlMo<sub>0.5</sub>NbTiVSi<sub>x</sub> alloys were discussed from a thermodynamic perspective.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"131 ","pages":"Article 107198"},"PeriodicalIF":4.2,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143851694","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

Synthesis of intermediate-valence tungsten oxides via carbon reduction and their dissolution behavior in hydrogen peroxide 碳还原法合成中间价钨氧化物及其在过氧化氢中的溶解行为

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-16 DOI: 10.1016/j.ijrmhm.2025.107191

Tianqi Huo , Fenglong Sun , Xuheng Liu , Xingyu Chen , Jiangtao Li , Lihua He , Wenjuan Zhang , Zhongwei Zhao

{"title":"Synthesis of intermediate-valence tungsten oxides via carbon reduction and their dissolution behavior in hydrogen peroxide","authors":"Tianqi Huo , Fenglong Sun , Xuheng Liu , Xingyu Chen , Jiangtao Li , Lihua He , Wenjuan Zhang , Zhongwei Zhao","doi":"10.1016/j.ijrmhm.2025.107191","DOIUrl":"10.1016/j.ijrmhm.2025.107191","url":null,"abstract":"<div><div>In this research, an ammonia-free recycling method for tungsten scraps is proposed, involving the preliminary oxidation of waste tungsten carbide, reduction to intermediate-valence tungsten oxides, and subsequent dissolution in hydrogen peroxide to produce peroxotungstic acid (PTA), a valuable precursor for tungsten products. The study emphasizes stabilizing intermediate-valence tungsten oxides during carbon reduction to achieve higher dissolution efficiency in hydrogen peroxide. Experimental results demonstrate that controlling the roasting conditions effectively regulates the degree of oxidation, while optimization of carbon reduction parameters ensures stable formation of intermediate-valence tungsten oxides. Dissolution experiments further confirm that tungsten dioxide (WO<sub>2</sub>) serves as an optimal precursor due to its high solubility and relatively low hydrogen peroxide consumption. Under optimized carbon reduction conditions (1000 °C, WO<sub>3</sub>:C molar ratio of 1:2), process enhancements enabled a dissolution rate exceeding 97 %, ensuring efficient tungsten recovery while reducing hydrogen peroxide consumption.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"131 ","pages":"Article 107191"},"PeriodicalIF":4.2,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844828","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

Liquid film shearing polishing for high quality and low damage tungsten surface: Process optimization, removal mechanism, and processing defects 高质量低损伤钨表面液膜剪切抛光：工艺优化、去除机理及加工缺陷

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-14 DOI: 10.1016/j.ijrmhm.2025.107189

Binbin Hong , Yiyang Chen , Hongyu Chen , Te Zhu , Peng Zhang , Xingzhong Cao , Xiaoyu Zhao , Laima Luo , Pengqi Chen , Haifeng Li , Binghai Lyu

{"title":"Liquid film shearing polishing for high quality and low damage tungsten surface: Process optimization, removal mechanism, and processing defects","authors":"Binbin Hong , Yiyang Chen , Hongyu Chen , Te Zhu , Peng Zhang , Xingzhong Cao , Xiaoyu Zhao , Laima Luo , Pengqi Chen , Haifeng Li , Binghai Lyu","doi":"10.1016/j.ijrmhm.2025.107189","DOIUrl":"10.1016/j.ijrmhm.2025.107189","url":null,"abstract":"<div><div>Surface quality can directly affect the hydrogen/helium retention behavior of tungsten, which will affect the safety and reliability of nuclear fusion reactors. At present, the polishing of polycrystalline tungsten for fusion reactors mainly has problems such as poor removal uniformity, preferential removal of grain boundaries, and processing defects. In this paper, a novel liquid film shearing polishing (LFSP) method was employed to process polycrystalline tungsten surfaces, which combines the shear rheological effect of non-Newtonian fluid with the strengthening effect of the surface-structured polishing plate. Systematic experiments were conducted to investigate the influence of various process parameters on surface quality, such as liquid film thickness, polishing speed, abrasive size, and abrasive concentration. The optimal polishing parameters were determined as a liquid film thickness of 2 mm, a polishing speed of 110 rpm, an abrasive size of 5 μm, and an abrasive concentration of 4 wt%. The surface morphology and roughness of samples were characterized by scanning electron microscopy and white light interferometry. Combined with surface force analysis, the material removal mechanism of LFSP was further revealed. Results show that the abrasive concentration was the critical factor affecting polishing quality, and the tungsten surface after LFSP was flatter than that after mechanical polishing (MP). Additionally, comparative analysis using transmission electron microscopy and positron annihilation spectroscopy revealed that tungsten polished by LFSP has fewer processing defects than MP. It seems that LFSP has a good application prospect in realizing high quality and low damage polishing of polycrystalline tungsten surface.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"131 ","pages":"Article 107189"},"PeriodicalIF":4.2,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844830","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

Investigation of the microstructure and properties of a ZrC-reinforced TZM molybdenum alloy 研究 ZrC 增强 TZM 钼合金的微观结构和性能

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-14 DOI: 10.1016/j.ijrmhm.2025.107188

Yanni Wei , Mengfan Ma , Shuyuan Zhang , Yifan Hu , Quanning Li , Linghao Zhu

{"title":"Investigation of the microstructure and properties of a ZrC-reinforced TZM molybdenum alloy","authors":"Yanni Wei , Mengfan Ma , Shuyuan Zhang , Yifan Hu , Quanning Li , Linghao Zhu","doi":"10.1016/j.ijrmhm.2025.107188","DOIUrl":"10.1016/j.ijrmhm.2025.107188","url":null,"abstract":"<div><div>TZM-ZrC composites with different particle content were produced by high-energy ball milling and discharge plasma sintering technology. The density, microstructure and phase composition of the composites with different particle content were investigated. The microhardness and compressive strength at room and high temperature were tested. The strengthening mechanism was explored. The grain size and density of the composites gradually decrease as the ZrC content increase. The addition of ZrC particles provides C element to the matrix, and in situ reacts with the matrix Mo to form Mo<sub>2</sub>C and ZrC<sub>0.7</sub>. The generated reinforced phase and the unreacted stable carbide particles coexist in the grain and at the grain boundaries of the Mo matrix, which inhibit the growth of the grains. The average microhardness of TZM-ZrC composites reaches 670.66 HV, and the compressive strength at room temperature and high temperature (600 °C) is about 2200 MPa and 2000 MPa when the ZrC particle content is 10 %. The excellent mechanical properties and thermal stability of the TZM-ZrC composites are attributed to a synergistic effect of nano-scale dispersion strengthening of ZrC particles and fine-grain strengthening. The study can be used to develop other refractory alloys that have both high strength and high thermal stability for high-temperature applications.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"131 ","pages":"Article 107188"},"PeriodicalIF":4.2,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833764","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 wear resistance of zirconium manufactured by laser directed energy deposition 激光定向能沉积法制备锆的显微组织和耐磨性

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-11 DOI: 10.1016/j.ijrmhm.2025.107168

Chaodan Hu , Linjiang Chai , Zhichen Wang , Tao Yang , Yi Tang , Zhongwei Wang , Weijia Gong , Korukonda L. Murty

{"title":"Microstructure and wear resistance of zirconium manufactured by laser directed energy deposition","authors":"Chaodan Hu , Linjiang Chai , Zhichen Wang , Tao Yang , Yi Tang , Zhongwei Wang , Weijia Gong , Korukonda L. Murty","doi":"10.1016/j.ijrmhm.2025.107168","DOIUrl":"10.1016/j.ijrmhm.2025.107168","url":null,"abstract":"<div><div>In this study, a zirconium sheet was fabricated utilizing laser directed energy deposition (L-DED) technique along with its microstructure, hardness, and wear resistance to be compared with a conventionally rolled and annealed (RA) zirconium sheet. The RA specimen exhibits equiaxed grains with uniform size and a bimodal basal texture, along with a few dispersed ZrFe<sub>2</sub> particles. In contrast, the L-DED specimen is featured by parallel or interlaced laths (with dense entangled dislocations) and many Zr<sub>3</sub>Fe precipitates along the lath boundaries, exhibiting a nearly random texture. Tests reveal that the L-DED specimen shows nearly two times hardness and a ∼ 30 % reduced wear rate compared to the RA specimen. Such improvement can be jointly attributed to the enhanced second-phase, dislocation and grain refinement hardening/strengthening. This study verifies the feasibility of producing high performance zirconium materials through L-DED, which could provide some definite insight into further application of additive manufacturing to zirconium production.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"130 ","pages":"Article 107168"},"PeriodicalIF":4.2,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143829239","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

A novel nitrogen-induced graded cemented carbides with γ'-strengthened binder phase 一种具有γ′强化粘结相的新型氮诱导梯度硬质合金

IF 4.2 2区材料科学

International Journal of Refractory Metals & Hard Materials Pub Date : 2025-04-10 DOI: 10.1016/j.ijrmhm.2025.107186

Guorui Chang , Xiaoyu Zheng , Yan Liu , Weili Wang , Na Li , Weibin Zhang

{"title":"A novel nitrogen-induced graded cemented carbides with γ'-strengthened binder phase","authors":"Guorui Chang , Xiaoyu Zheng , Yan Liu , Weili Wang , Na Li , Weibin Zhang","doi":"10.1016/j.ijrmhm.2025.107186","DOIUrl":"10.1016/j.ijrmhm.2025.107186","url":null,"abstract":"<div><div>The novel graded cemented carbides, with continuous variations in composition and phase, offers distinct functionalities to the surface and core. In the present work, a novel nitrogen-induced graded model cemented carbides with γ'-strengthened binder phase was systematically studied. Under the guidance of thermal analysis, the WC-Co-Ni-AlN-<em>M</em>C (<em>M</em> = Ta, Nb) graded model cemented carbides were sintered at 1320 and 1350 °C for 2 h under vacuum, respectively. The evolution of microstructure, elemental distribution, phase distribution and hardness was analyzed from the surface to the core. It was revealed that two different types of graded layers were formed by adjusting the sintering temperature. Meanwhile, the observed γ' phase significantly enhanced the microhardness of the binder phase. Consequently, the novel graded model cemented carbides with γ'-strengthened binder phase exhibited high hardness on the surface and high toughness in the core. Moreover, the migration and diffusion behavior of elements, as well as the formation mechanism of the graded structure, are elucidated. This work presents an innovative framework for the advancement of novel graded cemented carbides.</div></div>","PeriodicalId":14216,"journal":{"name":"International Journal of Refractory Metals & Hard Materials","volume":"130 ","pages":"Article 107186"},"PeriodicalIF":4.2,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143821509","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