Materials Science and Engineering: A最新文献

{"title":"High-temperature compressive behaviour and failure mechanism of high entropy carbides modified by Cr addition","authors":"Yichen Wang ,&nbsp;Zanlin Cheng ,&nbsp;Vladimír Girman ,&nbsp;Richard Sedlák ,&nbsp;Ján Dusza ,&nbsp;Michael J. Reece ,&nbsp;Chengyu Zhang","doi":"10.1016/j.msea.2024.147532","DOIUrl":"10.1016/j.msea.2024.147532","url":null,"abstract":"<div><div>The effect of Cr addition on the compressive and failure behaviour of high entropy carbides (HECs) at temperatures of 1400–1600 °C and stresses of 200–300 MPa was investigated by comparing two groups of ceramics: (Zr,Nb,Hf,Ta)C (HEC4) and HEC4 with Cr addition (HEC5-Cr), and 8-metal carbides (Ti,Zr,Hf,V,Nb,Ta,Mo,X)C with W or Cr addition for X. The HEC-Cr systems showed significantly lower compressive strain than Cr-free HECs under identical conditions. HEC4 showed a strain of about 1.4 % at 1500 °C under 200 MPa for 6 h, while HEC5-Cr demonstrated only 0.05 % strain. To the best of our knowledge, HEC5-Cr exhibited the lowest steady creep rate among carbides reported under similar conditions. Creep is almost negligible in HEC-Cr ceramics, mostly because the grain boundary sliding and cracking were restricted by the strong Cr-rich grain boundaries. The Cr addition changed the failure behaviour of HECs: the Cr-free HEC samples shattered into numerous pieces due to severe grain boundary deformation, the HEC-Cr samples typically fractured into two parts with transgranular failure. The strategic addition of Cr to HECs enhances compressive performance and modifies fracture behaviour, indicating their potential as superior materials for high-stress, high-temperature applications.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"920 ","pages":"Article 147532"},"PeriodicalIF":6.1,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663482","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}

{"title":"Additive manufacturing Cr-Mo-Si-V steel: Systematic parameter assessments, precipitation behavior of in-situ VC-M23C6 and strengthening mechanisms","authors":"Qing Wang ,&nbsp;Deyin Kong ,&nbsp;Xingran Li ,&nbsp;Shihui Zhou ,&nbsp;Zhihui Zhang","doi":"10.1016/j.msea.2024.147504","DOIUrl":"10.1016/j.msea.2024.147504","url":null,"abstract":"<div><div>To obtain the H13 steel with defect-structure-performance compatibility fabricated by laser powder bed fusion (LPBF), a systematic optimisation framework was employed to get optimal process window in this paper. Subsequently, the microstructural evolutions, nanoprecipitation behaviors and strengthening mechanisms of H13 steels built at recommended parameters were in-depth analyzed. The evolutions of submicron sized cellular and columnar dendritic crystal were explained as well as the phase transformation process including lath martensite with a twin substructure and the carbon-rich residual austenite (RA) films were revealed. Two nano carbides, MC (rich in V and Mo) as well as M₂₃C₆ (rich in Cr and Mn), with diameters of 10–40 nm, were precipitated due to the intrinsic heat treatment (IHT) in LPBF process. Cr₂₃C₆ particles preferentially nucleated at the grain and subgrain boundaries due to the presence of crystalline defects such as dislocations and stacking faults caused by lattice distortion. It then grew by alloying elemental depletion while remaining semi-coherency with the α-Fe matrix. VC particles nucleated in situ within M₂₃C₆ as V atoms accumulated and replaced M atoms in the M₂₃C₆ lattice. With the growth of VC nuclei, the strain energy caused by local lattice misfit increased. This was offset by the development of self-accommodating twins featuring a long-period stacking order substructure within the VC particles. Eventually, spheroidal VC with twin structure were embedded in or adjacent to M₂₃C₆ carbides, and the orientation relationships for VC/M₂₃C₆ and VC/α-Fe were revealed. The as-built H13 steel exhibited excellent hardness and strength compared to wrought H13 steel, which was mainly attributed to dislocation strengthening and grain boundary strengthening, with precipitation strengthening playing a secondary role due to the low amount of nanoprecipitates. The low elongation (El) at fracture was closely related to the instability of RA films as well as the residual stress.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147504"},"PeriodicalIF":6.1,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656844","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}

{"title":"Dynamic deformation behaviors and structure evolution of TiZrHf hexagonal closed-packed medium-entropy alloy","authors":"Zhenhua Han ,&nbsp;Yubo Tian ,&nbsp;Jun Yang ,&nbsp;Yanchang Liu ,&nbsp;Gang Liu ,&nbsp;Zilu Wang ,&nbsp;Ran Wei ,&nbsp;Guojun Zhang ,&nbsp;Hongyan Wang","doi":"10.1016/j.msea.2024.147516","DOIUrl":"10.1016/j.msea.2024.147516","url":null,"abstract":"<div><div>In this study, the deformation behavior of a hexagonal closed-packed (HCP) TiZrHf medium-entropy alloy (MEA) was investigated across a wide range of strain rates from 10⁻⁴ s⁻¹ to 4990 s⁻¹. The alloy exhibits an exceptional combination of strength and plasticity during dynamic loading, as well as a noticeable strain rate hardening effect. The strain rate hardening effect is associated with the strong dislocation drag resulting from the fast dislocation velocity at high strain rates. Microstructure evolution analyses demonstrate that various deformation mechanisms occur within shear bands under dynamic loading, including the formation of deformation twins, dislocation cells, microbands, amorphous bands, and dynamic recrystallization. The dynamic deformation is influenced by the competition between hardening mechanisms and thermal softening effects. Dislocations, deformation twins, and amorphous bands dominate the strain hardening effect, while temperature rise induced by adiabatic shear contributes to thermal softening effects. Additionally, dynamic recrystallization and amorphization also lead to a decrease in dislocation density during dynamic loading.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147516"},"PeriodicalIF":6.1,"publicationDate":"2024-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656765","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}

{"title":"Enhancing tensile and creep properties of Inconel 617 superalloy via regulating the synergistic evolution of M23C6 carbides and γ′ phases","authors":"Zhiyang Zhang,&nbsp;Ran Ding,&nbsp;Qianying Guo,&nbsp;Chenxi Liu,&nbsp;Yongchang Liu","doi":"10.1016/j.msea.2024.147523","DOIUrl":"10.1016/j.msea.2024.147523","url":null,"abstract":"<div><div>A novel heat treatment strategy, termed solution-double aging treatment (SDAT), is proposed to enhance the tensile properties and creep resistance at high-temperature of Inconel 617 Ni-based superalloy. This method aims to achieve a microstructure that maintains excellent thermal stability at elevated temperature up to 760 °C. The results suggest that the improved tensile properties of SDAT-treated alloys are attributable to orderly precipitation and synergistic interaction of M₂₃C₆ carbides and γ′ phases. Under identical creep conditions, SDAT alloys significantly enhance creep strength and extend creep rupture life in comparison to solution-treated (ST) alloys. Specifically, under creep conditions of 760 °C/170 MPa, SDAT alloys exhibit a 37.25 % longer creep rupture life than ST alloys, particularly under low-stress conditions. The enhanced creep properties of SDAT alloys are due to the unique microstructure produced by the SDAT treatment: the high-density and small-size of γ′ phases effectively impede dislocation movement, thereby reducing the minimum creep rate; the evolution of cylindrical coarse M₂₃C₆ carbides predominantly occurs near grain boundaries or within grains, reducing the formation of creep cracks; the high proportion of grain boundary M₂₃C₆ carbides mitigates creep damage caused by carbide evolution, inhibiting the initiation and extension of grain boundary cracks. The SDAT heat treatment process provides a novel approach to improving the creep life of Ni-based superalloys by controlling the synergistic evolution mechanisms of carbides and γ′ phases.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147523"},"PeriodicalIF":6.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656701","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}

{"title":"On the dynamic failure mechanism of Vit-1 bulk metallic glass: Coupling effects of pre-made damage and strain rate","authors":"Yang Han ,&nbsp;Zejian Xu ,&nbsp;P.J. Tan ,&nbsp;Mengyu Su ,&nbsp;Jianfei Li ,&nbsp;Fenglei Huang","doi":"10.1016/j.msea.2024.147522","DOIUrl":"10.1016/j.msea.2024.147522","url":null,"abstract":"<div><div>To clarify the two distinct effects and the underlying physical mechanisms of pre-made damage on the failure strength of bulk metallic glass (BMG), i.e. strengthening or weakening, the influence of axial pre-compression on the dynamic failure of Vit-1 BMG are investigated experimentally. Quasi-static and dynamic compression tests were conducted on pre-compressed BMG specimens for a wide range of nominal strain rates between 0.001 s⁻¹ to 6000 s⁻¹. The focus is on the coupled effects of pre-compression and strain rate on the dynamic failure stress. Two contrasting mechanisms were identified that influence how the pre-made shear bands affect the propagation of cracks under different strain rates. It will be shown that the dynamic failure stress exhibits a transition from strengthening to knockdown with increasing strain rate; and, that the extent of these strengthening and knockdown effects depends on the pre-compression strain level. Finally, a failure model that captures the effects of both strain rate and pre-made damage is proposed.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147522"},"PeriodicalIF":6.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656702","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}

{"title":"A comprehensive overview of additive manufacturing aluminum alloys: Classifications, structures, properties and defects elimination","authors":"Xianwen Yang ,&nbsp;Ruidi Li ,&nbsp;Tiechui Yuan ,&nbsp;Linda Ke ,&nbsp;Jie Bai ,&nbsp;Kai Yang","doi":"10.1016/j.msea.2024.147464","DOIUrl":"10.1016/j.msea.2024.147464","url":null,"abstract":"<div><div>Aluminum alloys, known for their high strength, good toughness, and lightweight properties, are widely used in aerospace, rail transportation, and other fields. 3D printing, as an emerging additive manufacturing (AM) technology, achieves the transformation from digital models to physical products through layer-by-layer material deposition. This processing method significantly enhances the flexibility of both design and manufacturing, while also enabling the efficient production of complex piping and intricate cavity structures. This paper comprehensively and systematically introduces the classification, structure, performance, defects, and elimination methods of AM aluminum alloys. It begins with an introduction to AM technologies and traditional aluminum alloys. Then, it discusses the classifications and performances of AM aluminum alloys, such as Al-Si, Al-Mg-(Sc, Zr), Al-Cu-(Mg), Al-Zn-Mg-(Cu), Al-Fe, Al-Ni, Al-Mn, and Al-based composites, and providing a detailed and comprehensive overview of the mechanical properties (both in horizontal and vertical directions), heat resistance, fatigue performance, creep behavior, corrosion resistance, impact resistance, and wear resistance of the alloys. It also discusses the potential defects of different types of alloys and their mitigation methods, especially the formation mechanisms and elimination methods of porosity, deformation, and cracking. Moreover, the role of refiners in 3D-printed aluminum alloys is separately demonstrated. Finally, the paper presents the practical applications and prospects of 3D printed aluminum alloys, aiming to establish a systematic and comprehensive framework to provide a multi-faceted overview of aluminum alloys in AM, offering valuable insights and guidance for scientific research and industrial applications.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147464"},"PeriodicalIF":6.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656759","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}

{"title":"Achieving high strength and low yield ratio by constructing the network martensite-ferrite heterogeneous in low carbon steels","authors":"Xiong Du ,&nbsp;Liexing Zhou ,&nbsp;Jun Li ,&nbsp;Zhenwei Xie ,&nbsp;Shaohong Li ,&nbsp;Hongbo Xiao ,&nbsp;Mengnie Li ,&nbsp;Yuanjie Zhao","doi":"10.1016/j.msea.2024.147526","DOIUrl":"10.1016/j.msea.2024.147526","url":null,"abstract":"<div><div>In this research, focusing on low-carbon steel, a martensite-ferrite heterogeneous structure dual-phase (MFDP) steel with a network morphology where ferrite is surrounded by martensite was obtained via cyclic annealing and subcritical quenching heat treatment processes. With the initial microstructure of ferrite and lamellar pearlite, a spherical pearlite and martensitic structure surrounding the ferrite was first obtained by applying the cyclic annealing process near the Ac₁ temperature. Subsequently, the annealed structure was subjected to subcritical quenching heat treatment, thereby establishing a network-like martensite-ferrite dual-phase heterogeneous structure and named N-760 °C and N-780 °C. In comparison with the ferrite-martensite dual-phase steel where ferrite envelopes martensite, N-780 °C witnessed a marked increase in tensile strength and uniform elongation, while the yield ratio dropped by 20 %. Through cyclic loading and unloading tensile tests, it was found that the N-760 °C showed a more obvious heterogeneous deformation-induced (HDI) strengthening effect. The results from electron backscattering and transmission electron microscopy indicate that, in the N-760 °C, a small quantity of dislocations is produced in the ferrite due to the martensitic phase transformation prior to the tensile test. During the tensile process, as the strain increases, the ferrite undergoes significant deformation, and the intragranular dislocations re-arrange to form dislocation cells and deformation-induced grain boundaries (SIBs). Meanwhile, geometrically necessary dislocations (GNDs) accumulate at the ferrite/martensite interface. Therefore, the non-coordinated deformation between the mesh-like dual-phase microstructure offers additional HDI strengthening for MFDP steel.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"920 ","pages":"Article 147526"},"PeriodicalIF":6.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663481","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}

{"title":"Insights into the precipitation-dominated creep behavior of a 25Cr20Ni-Nb-N austenitic heat-resistant steel via interrupted creep","authors":"Yinsheng He ,&nbsp;Hongyu Zhou ,&nbsp;Wenyue Zheng ,&nbsp;Peichen Yu ,&nbsp;Hao Guan ,&nbsp;Mengyuan Yu ,&nbsp;Yuchen Zhao ,&nbsp;Keesam Shin","doi":"10.1016/j.msea.2024.147520","DOIUrl":"10.1016/j.msea.2024.147520","url":null,"abstract":"<div><div>The creep behavior of austenitic heat-resistant steels (A-HRS) determines their application and safe operation in modern advanced ultra-supercritical power plants. To date, understating of the creep behavior and corresponding microstructural evolution has relied on creep rupture tests, therefore, the evolution of complex precipitates and their effects on properties remains debated. Here, a series of interrupted and ruptured creep tests were conducted on 25Cr20Ni-Nb-N (HR3C) steel at 700 °C under the stress of 180 MPa, 150 MPa and 120 MPa. It was found that the creep deformation was predominantly controlled by dislocation gliding that interacted with the secondary Z-phase dispersions in grain interior. While the associated fracture mechanism was the intergranular fracture dominated by wedge cracking that was accelerated by the σ-phase and coarse M₂₃C₆ at grain boundaries. It was further demonstrated that the creep strengthening was dominated by the shearing mechanism originated from the secondary Z-phase dispersions. Conversely, the contribution of Orowan bowing from M₂₃C₆ and primary Z-phase became negligible as their coarsened size. Furthermore, it was clarified that the dominant strengthening of the secondary Z-phase and the subgrains to the microhardness development, whereas the contribution of M₂₃C₆ and σ-phase is slight.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147520"},"PeriodicalIF":6.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656842","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}

{"title":"Thermo-mechanical fatigue behavior and life prediction of selective laser melted inconel 718","authors":"C.L. Zou ,&nbsp;J.C. Pang ,&nbsp;W.B. Li ,&nbsp;N. Wang ,&nbsp;Y.Y. Feng ,&nbsp;S.X. Li ,&nbsp;H. Zhang ,&nbsp;Z.F. Zhang","doi":"10.1016/j.msea.2024.147502","DOIUrl":"10.1016/j.msea.2024.147502","url":null,"abstract":"<div><div>The thermo-mechanical fatigue (TMF) property and corresponding damage mechanisms of selective laser melted (SLM) Inconel 718 superalloy were investigated systemically. The results show that the TMF life under in-phase (IP) loading is lower than that under out-of-phase (OP) loading, and the life difference gradually decreases with decreasing the strain amplitude. The fatigue cracks mainly exhibit inter-granular cracking characteristics under IP loading, and the δ phase embedded to the grain boundary promotes the creep cavity formation and then causes the fatigue crack propagation. While under OP loading, the fatigue crack is mainly characterized by trans-granular cracking, the oxidation induced crack extends from the specimen surface to the interior. A parameter, known as the shape factor <em>k</em>, has been discovered to exhibit high stability in temperature variations. Given the high stability of the <em>k</em> value and the quantitative relationship between stress and plastic strain range across different loading modes, a rapid prediction method for TMF hysteretic energy based on low cycle fatigue (LCF) has been proposed. Finally, combined with the energy cumulative damage model, the TMF life is successfully predicted. This approach significantly reduces the experimental quantity and complexity required for the TMF life prediction process, demonstrating substantial industrial application value.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147502"},"PeriodicalIF":6.1,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656769","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}

{"title":"Mechanistic understanding of banded microstructure and its effect on anisotropy of toughness in low carbon-low alloy steel","authors":"Xuan Cheng ,&nbsp;Guhui Gao ,&nbsp;Chao Fu ,&nbsp;Xiaolu Gui ,&nbsp;Bingzhe Bai ,&nbsp;Chun Feng","doi":"10.1016/j.msea.2024.147507","DOIUrl":"10.1016/j.msea.2024.147507","url":null,"abstract":"<div><div>In this study, the relationship between the anisotropy of toughness and microstructure in low carbon low alloy steel treated by quenching and tempering (QT) heat treatment was investigated with the aid of scanning electron microscope, electron back-scattered diffraction and transmission electron microscope combined with energy disperse spectroscopy techniques. Results show that the impact toughness of the quenched steel plate along the longitudinal and transverse directions are little different. However, after tempering, the longitudinal impact toughness of QT steel plate is improved by 88 %, while the transverse impact toughness is slightly decreased, leading to a significant anisotropy of toughness. Microstructural characterizations reveal that banded microstructure with coarse grain size exists along longitudinal direction (i.e., rolling direction) of steel plate, which is attributed to co-segregation of Mn and C and the resulting uneven recrystallization during hot rolling. After tempering, fine and dispersed carbides are precipitated in matrix microstructure, but high-density coarse carbides are formed within banded microstructure. It is suggested that the coarse grains and high-density coarse carbides significantly deteriorate the resistance against crack propagation along banded microstructure, leading to the anisotropy of toughness of QT steel plate. The findings of this study will aid to design metallurgical processes including chemical composition design, hot rolling, and heat treatments to eliminate the anisotropy of toughness of low alloy steels with high strength and toughness.</div></div>","PeriodicalId":385,"journal":{"name":"Materials Science and Engineering: A","volume":"919 ","pages":"Article 147507"},"PeriodicalIF":6.1,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656704","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}