Mechanics of Materials最新文献

{"title":"Deformation localization of superhard amorphous carbons under nanoindentation accompanied by sp3-to-sp2 rehybridization","authors":"Xin Li,&nbsp;ZhongTing Zhang,&nbsp;HengAn Wu,&nbsp;YinBo Zhu","doi":"10.1016/j.mechmat.2026.105608","DOIUrl":"10.1016/j.mechmat.2026.105608","url":null,"abstract":"<div><div>Tetrahedral amorphous carbons (ta-Cs) represent a class of atomically disordered diamonds with excellent mechanical properties and promising applications. In recent experiments, several high-density superhard ta-Cs have been synthesized under high-pressure and high-temperature conditions, in which the hardness of atomically disordered diamonds is larger than single-crystal diamond. It is essential to understand the origin of ultrahigh hardness and associated deformation mechanisms for guiding experimental synthesis and future applications. Through large-scale molecular dynamics simulations, we investigated the nanoindentation of three representative ta-Cs, including amorphous diamond (a-D), paracrystalline diamond (p-D), and nano-polycrystalline diamond (NPD). A distinctive deformation localization was revealed to accompanied by the sp³-to-sp² rehybridization, with the mechanical performance of ta-Cs strongly dependent on the size and proportion of paracrystallite and crystallinity. During nanoindentation, the paracrystalline/crystalline grains in p-D and NPD evolved into sp²/sp³ mixed amorphous domains, while the disordered matrix in ta-Cs maintained disordered, which led to occurrence of the sp³-to-sp² rehybridization. The short exponential attenuation length indicates the confined indentation response within a small region and notabe deformation localization. Our study provides atomic-scale insights into the mechanical behavior and microstructure destruction of ta-Cs, inspiring their potential applications and opening up new perspectives for investigating other amorphous carbons.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105608"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Compressive collapse modes of hyperelastic origami honeycombs","authors":"Antonio Schiavone,&nbsp;Graham McShane","doi":"10.1016/j.mechmat.2026.105600","DOIUrl":"10.1016/j.mechmat.2026.105600","url":null,"abstract":"<div><div>Mechanical metamaterials are currently redefining the scope of achievable material properties through the use of micro-architecture. Origami-inspired metamaterials represent one avenue for design and optimisation of these materials, offering a large geometric design space with a range of unique and highly tunable properties. In this investigation, we consider the mechanics of flexible, elastic origami honeycombs with the “symmetric diamond Miura-ori” cell geometry. Potential applications for these materials include biomedical devices, wave attenuation, blast protection, energy absorption, soft robotics, deployable and reconfigurable structures, and many more. In this investigation, we develop insights into the large strain elastic compressive collapse mechanisms of these materials. A key question is to what extent the compressive collapse of these materials follows origami “rigid facet” folding kinematics to large strains, and whether or not that adherence is desirable for a given application. To answer this question, two modelling approaches are used. An analytical model is derived that predicts the large strain response adhering to folding kinematics, while a finite element (FE) model captures additional collapse mechanisms. Together, these modelling approaches are used to identify different regimes of collapse within the geometric design space, and create a design map quantifying this. The comparison also validates the analytical model within its regime of applicability, and provides an understanding of its accuracy outside of this. Following this, the new design map is applied to two case studies: the application of these materials as soft robotic actuators (where folding kinematics is desirable to large strains) and elastic energy absorbers (where departures from folding kinematics are shown to be advantageous). For the former regime, the hyperelastic analytical model derived here provides an accurate and computationally efficient route to exploit the rich material design space.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105600"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scattering of SH wave by a cylindrical nano inclusion in the 1D hexagonal quasicrystals","authors":"Yuanyuan Ma ,&nbsp;Yueting Zhou ,&nbsp;Shaonan Lu ,&nbsp;Juan Yang ,&nbsp;Xuefen Zhao ,&nbsp;Shenghu Ding","doi":"10.1016/j.mechmat.2026.105621","DOIUrl":"10.1016/j.mechmat.2026.105621","url":null,"abstract":"<div><div>The wave scattering caused by the quasicrystals (QCs) inclusion directly affects the overall wave behaviors of the QCs. Using the Gurtin-Murdoch (G-M) surface/interface theory and the complex function theory, this paper explores the scattering problem of SH wave by a cylindrical nano inclusion in the 1D hexagonal QCs. The scattered wave is expressed as a series of wave functions by applying the wave function expansion method. Then, the boundary conditions at the nanoscale, extrapolated from the generalized Young-Laplace equations, are used to establish an infinite system of algebraic equations for solving the scattered wave functions with unknown coefficients. The analytical stress field solutions are derived from the orthogonal characteristics of the trigonometric functions, which provide a new idea and solution for wave propagation problems in QCs. The effects of the surface effect parameters, the elastic constants, the coupling coefficients, and the wave numbers on the dimensionless hoop and radial stresses of the phonon and phason fields (DHRSPP) around the nano inclusion are analyzed in numerical examples. The results show that the dimensionless hoop stress (DHS) around the nano inclusion gradually decreases, and the dimensionless radial stress (DRS) increases with the increase of the surface effect parameters as well as the ratio of the phonon field's elastic constants. The distribution of dimensionless radial and hoop stress around the nano inclusion becomes more complex with the increase in wave number. The coupling coefficients have a considerably small effect on the DHRSPP around the nano inclusion. The research here contributes to the optimization and improvement of acoustic imaging, non-destructive testing, and material evaluation methods for QCs.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105621"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146078225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation to grain-size dependent plasticity of Mg alloys based on phase field approach","authors":"Jiachen Hu ,&nbsp;Bo Xu ,&nbsp;Junyuan Xiong ,&nbsp;Chao Yu ,&nbsp;Guozheng Kang","doi":"10.1016/j.mechmat.2025.105596","DOIUrl":"10.1016/j.mechmat.2025.105596","url":null,"abstract":"<div><div>A grain size-dependent crystal plasticity-twinning phase field model is proposed by integrating a Hall-Petch-type slipping resistance and a grain misorientation-dependent barrier energy. Monotonic and cyclic deformation simulations are performed on the texture-free and basal-textured polycrystalline Mg alloys to investigate their plastic deformation and underlying mechanisms governed by both the grain size and texture. The results demonstrate that the grain refinement suppresses twinning and promotes non-basal slipping, shifting the plastic deformation in the texture-free alloys from a twinning-dislocation slipping co-dominance to a dislocation slipping dominance. However, the sustained dominance of twinning and basal slipping in the basal-textured systems indicates a lower critical grain size of twinning compared to the texture-free ones. Under a cyclic loading, the grain refinement mitigates the detwinning-induced inelastic unloading in the texture-free systems and reduces the yield asymmetry in the basal-textured ones. The grain refinement also reduces the number and kind of twins by limiting their available space and nucleation sites, and weakening the twin-twin interactions. The increased deformation homogeneity shifts the twin evolution at peak tensile strain from a thickening-to nucleation- and propagation-dominated modes and makes the re-twinning be more strongly suppressed than primary twinning. Furthermore, the texture enhances twin-twin interactions, intensifying the localization of dislocation slipping, while the grain refinement promotes a more homogeneous distribution of dislocation slipping. The inhomogeneous stress fields generated by accumulated dislocations reversely regulate the twin activity, revealing a coupling mechanism between them. These findings provide mechanistic insights into strengthening and toughening Mg alloys through a texture-grain size synergistic design.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105596"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145895940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effective elastic modulus of 3D printed plastic 2D and 3D infill patterns","authors":"Bo Zhang ,&nbsp;Andrea Carolina Oña Vera ,&nbsp;Ticho Ooms ,&nbsp;Yaxin Tao ,&nbsp;Yuming Qi ,&nbsp;Wouter De Corte ,&nbsp;Roman Wan-Wendner","doi":"10.1016/j.mechmat.2026.105601","DOIUrl":"10.1016/j.mechmat.2026.105601","url":null,"abstract":"<div><div>3D printing creates complex structures by precisely depositing material layer by layer. This allows materials to be placed only where needed (based on stress analysis), producing lightweight yet rigid structures. In this study, plastic cylindrical domains filled with rectangular and gyroid infill patterns incorporating various design parameters, such as infill density, unit cell size, and inclination angle (for rectangular infills), are printed. The infill patterns are supported during printing by a thin outer skin layer, allowing for measurements by means of digital image correlation. Uniaxial compression tests are conducted on the cylinders, and the effective elastic modulus of the infill patterns is evaluated by accounting for load eccentricities and removing the influence of the outer shell. The results reveal that the relations between infill density and effective elastic modulus are linear for the rectangular 2D infill patterns and follow a power law for the gyroid 3D infill patterns, corresponding to stretching-dominated and bending-dominated deformation modes, respectively. The unit cell size minimally influences the effective elastic modulus. Inclination negatively impacts the effective elastic modulus of the rectangular infill pattern by inducing shear stress along the inclined extrusion axis, which weakens both interlayer and interfilamentous interfaces. Furthermore, the relationships between inclination angles, infill density, and effective elastic modulus follow power law functions. This study investigated the impact of infill pattern design parameters on the effective elastic modulus, establishing functional relationships between these parameters and the elastic modulus, and providing valuable insights for structural optimization, ultimately leading to lightweight and stiff structures.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105601"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Brittle failure in residually stressed soft materials — Modeling, initiation and propagation of failure, and experimental simulations","authors":"Soumya Mukherjee ,&nbsp;Paritosh Mahata ,&nbsp;Saksham Raj","doi":"10.1016/j.mechmat.2026.105598","DOIUrl":"10.1016/j.mechmat.2026.105598","url":null,"abstract":"<div><div>This paper presents a framework to model semi-brittle (gradual) to fully brittle catastrophic failure of residually stressed soft materials. We consider a <em>virtual</em> stress-free configuration that follows the Volokh failure model, where Neo-Hookean or Yeoh models are embedded in the incomplete Gamma function. Using inverse analysis, two failure models are developed accurately for residually stressed bodies. The first developed model is used to investigate the initiation and propagation of failure in a residually stressed hollow thick sphere subjected to internal pressure — a problem equivalent to cavitation instability and void growth. In the presence of residual stress, a cavity need not necessarily grow outward starting from the inner surface Instead, the initiation and propagation of failure show intricate patterns, mechanisms, and staging, influenced by different types of residual stress fields. Failure can initiate at the outer surface, at an intermediate point, or simultaneously at multiple locations and propagate both inward and outward. Among several other cases, compound spheres (a specific type of residually stressed spheres) exhibit an intriguing pattern and a clear staging in failure propagation. The residually stressed Yeoh model with Volokh failure is used to simulate the failure of initially stressed natural rubber under biaxial extension, based on experimental results on the failure of natural rubber. Diverse shapes of the failure envelope demonstrate the initial stress-driven anisotropic response of natural rubber. The current constitutive framework applies to predicting the failure of any other residually stressed soft structures. This model is further simplified to create a residually stressed Yeoh model that can be useful for various applications.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105598"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strengthening mechanism of CoCrFeMnNi high-entropy alloys with dual-gradient nanostructures: Grain size and twin boundary spacing","authors":"Xingguo Yang ,&nbsp;Shuaijun Li ,&nbsp;Yuxuan Yi ,&nbsp;Chao Song ,&nbsp;Fei Yin","doi":"10.1016/j.mechmat.2026.105603","DOIUrl":"10.1016/j.mechmat.2026.105603","url":null,"abstract":"<div><div>Both a grain size gradient and twinning-induced plasticity can achieve a synergistic effect of high strength and plasticity in metals/alloys. To investigate whether this effect is still produced at the nanoscale, a series of CoCrFeMnNi high-entropy alloy (HEA) atomic models with equiatomic ratios was designed, including homogeneous nanostructured (HNS), single-gradient nanostructured (SGNS), and dual-gradient nanostructured (DGNS) models, and others. The mechanical response of the CoCrFeMnNi HEA under uniaxial tensile loading was simulated by molecular dynamics (MD). Research has shown that, compared to the HNS samples, the mechanical properties of both the HEA samples with SGNS and DGNS are significantly improved, with DGNS producing better strengthening. The grain size gradient yields a certain stress/strain and dislocation density gradient distribution, stimulating the deformation potential of almost all the grains. Furthermore, it also suppresses mechanically driven grain boundary (GB) migration and grain rotation, promotes grain growth, weakens strain softening, and enhances the strengthening effect of GBs, all of which improve the mechanical properties of nanocrystalline HEAs. Twinning also weakens strain softening, and a reasonable twin boundary (TB) spacing and gradient can increase the number of dislocations and affect the direction and resistance to dislocation motion to achieve higher strength. The MD simulation shows that the DGNS improves the mechanical properties of nanocrystalline HEA on the basis of the SGNS, and the combination of a larger grain size gradient and smaller TB spacing gradient has the best strengthening effect.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105603"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145928235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Γ-convergence for a phase-field cohesive energy","authors":"Eleonora Maggiorelli ,&nbsp;Matteo Negri ,&nbsp;Francesco Vicentini ,&nbsp;Laura De Lorenzis","doi":"10.1016/j.mechmat.2026.105606","DOIUrl":"10.1016/j.mechmat.2026.105606","url":null,"abstract":"<div><div>Reproducing the key features of fracture behavior under multiaxial stress states is essential for accurate modeling. Experimental evidence indicates that three intrinsic material properties govern fracture nucleation in elastic materials: elasticity, strength, and fracture toughness (or critical energy release rate). The flexibility in introducing these features in phase-field models poses significant challenges, especially under complex loading conditions. To attain this goal, recent work introduces a new energy functional within a cohesive phase-field framework. This model introduces an internal variable to describe the inelastic response. Notably, the strength is decoupled from the internal length, that is not interpreted as a material length scale, as often done in literature, but rather as a purely variational tool. The proposed functional allows for a rigorous variational framework, enabling the use of tools from the calculus of variations. We investigate the <span><math><mi>Γ</mi></math></span>-convergence of the model to a sharp cohesive fracture energy in the one dimensional setting, using a finite element discrete formulation and exploiting the strong localization of the damage variable. Notably, unlike classical models where the elastic and fracture energies converge independently, this model exhibits a coupling of all energy terms. The limiting cohesive energy arises from the combined asymptotic behavior of the elastic energy (concentrated in a single element), the fracture energy, and the potential for the internal variable, while the remaining elastic energy converges separately. We highlight that the <span><math><mi>Γ</mi></math></span>-convergence of the model can be extended to the two-dimensional (anti-plane) setting.</div><div>Finally, we present numerical simulations exploring the sensitivity of the model to mesh anisotropy, offering insight into both its theoretical robustness and its practical implementation.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105606"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 generalized discrete distribution model for random orientations of anisotropic fillers with orthorhombic properties: The regular polyhedron orientation method","authors":"Hiroyuki Ono","doi":"10.1016/j.mechmat.2025.105585","DOIUrl":"10.1016/j.mechmat.2025.105585","url":null,"abstract":"<div><div>In a previous paper, the author serendipitously identified that a simple discrete orientation distribution, which can represent two or three-dimensional random orientation states of isotropic ellipsoidal fillers, is closely related to the golden ratio. In particular, a three-dimensional random orientation state can be realized by assigning the same orientation angles to the fillers as those of the vertices of a regular dodecahedron or icosahedron, both of which are related to the golden ratio. This orientation method leads to isotropic macroscopic elastic constants and thermal expansion coefficients in the resulting material. In this study, we name this orientation method <em>the regular polyhedron orientation method</em>, and aim to extend this method to cases where the fillers have the same anisotropy as orthorhombic materials. By introducing a novel method that decomposes the anisotropic elastic constants into isotropic and anisotropic parts, and applying the Mori–Tanaka method, theoretical solutions for the macroscopic elastic constants and the thermal expansion coefficients are derived for both discrete and continuous random orientation states of fillers. Notably, the solution for the continuous two-dimensional random orientation can be obtained as a more general solution that also encompasses the solutions for both cases where fillers are aligned unidirectionally and oriented randomly in three dimensions. A comparison of the results from discrete and continuous orientation distributions reveals that the discrete orientation distributions that characterize the random orientation state are identical to those of the isotropic filler case. Therefore, the regular polyhedral orientation method is suggested to be effective regardless of the shape and physical properties of the fillers. Furthermore, it is also demonstrated that an approximate analysis using only the isotropic part of the fillers’ elastic constants may be valid with a certain degree of accuracy for analyzing three-dimensional random orientation states of fillers.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105585"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146024179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Local chemistry-driven intragranular stress redistribution during dwell fatigue of a near-alpha titanium alloy","authors":"K.U. Yazar ,&nbsp;Sureddy Tejanath Reddy ,&nbsp;Amit Bhattacharjee ,&nbsp;Marc De Graef ,&nbsp;Satyam Suwas","doi":"10.1016/j.mechmat.2026.105605","DOIUrl":"10.1016/j.mechmat.2026.105605","url":null,"abstract":"<div><div>Dwell fatigue is a critical issue in titanium alloys, posing serious challenges to their reliability in aerospace and defense applications. It manifests as accelerated accumulation of damage due to localized stress redistributions, particularly in regions of unfavorable grain orientations. In the present study, local compositional variations and their effects on dwell fatigue of a near-alpha titanium alloy, IMI 834, with a bimodal microstructure were investigated. To date, stress redistributions during the ‘dwell period’ have primarily been linked to grain orientations, with limited investigations into other contributing factors. However, a unique phenomenon related to elemental segregation in primary alpha (<span><math><mrow><msub><mi>α</mi><mi>p</mi></msub></mrow></math></span>) grains and the consequent deformation heterogeneities, revealed through correlative use of compositional mapping and electron backscatter diffraction combined with dictionary indexing of diffraction patterns, is reported in the present study Aluminium segregation during the duplex annealing stage results in a <em>core</em>-<em>shell</em> structure in the <span><math><mrow><msub><mi>α</mi><mi>p</mi></msub></mrow></math></span> grains. Higher aluminium concentration in the <em>core</em> reduces the ratio of the initial slip system strength of basal to prismatic &lt;a&gt; slip and thereby promoting basal slip. Full-field crystal plasticity simulations using a phenomenological power law model, accounting for these local compositional variations, reveal the resulting stress redistribution within <span><math><mrow><msub><mi>α</mi><mi>p</mi></msub></mrow></math></span> grains, in contrast to a case without segregation. These results highlight the importance of incorporating local chemistry-driven effects in such predictive models for dwell fatigue, underscoring the value of correlative microscopy in characterizing chemistry-induced micromechanical heterogeneity at the individual grain scale.</div></div>","PeriodicalId":18296,"journal":{"name":"Mechanics of Materials","volume":"215 ","pages":"Article 105605"},"PeriodicalIF":4.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145979485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}