International Journal of Plasticity最新文献

{"title":"A physics-informed learning framework for evolving anisotropy and asymmetry in plasticity: Metric-support convex-gauge network (MS-CGNet)","authors":"Mengyuan Wang,Pei Zhang,Jun Ma,Heng Li","doi":"10.1016/j.ijplas.2026.104865","DOIUrl":"https://doi.org/10.1016/j.ijplas.2026.104865","url":null,"abstract":"","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"35 1","pages":"104865"},"PeriodicalIF":9.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simultaneously achieving low elastic modulus and high ductility in additively manufactured Ti-Nb alloys through nanodomain engineering and crystallographic orientation control","authors":"Yansong Zhang,Huaming Wang,Jia Li,Bingsen Liu,Yanyan Zhu","doi":"10.1016/j.ijplas.2026.104852","DOIUrl":"https://doi.org/10.1016/j.ijplas.2026.104852","url":null,"abstract":"","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"7 1","pages":"104852"},"PeriodicalIF":9.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149150162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Understanding the effect of neutron dose on plastic deformation, fracture nucleation, and toughness using a crystal plasticity phase field fracture model and a microscale J-integral methodology","authors":"Michael Salvini,Nicolò Grilli,Mahmoud Mostafavi,Guilherme Corrêa Soares,Matti Lindroos,Marta Serrano,Christopher Truman","doi":"10.1016/j.ijplas.2026.104853","DOIUrl":"https://doi.org/10.1016/j.ijplas.2026.104853","url":null,"abstract":"","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"13 1","pages":"104853"},"PeriodicalIF":9.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of phase field formulations to capture dislocation interactions within elastically inhomogeneous media","authors":"Brayan Murgas,Janel Chua,Nithin Mathew,Abigail Hunter","doi":"10.1016/j.ijplas.2026.104859","DOIUrl":"https://doi.org/10.1016/j.ijplas.2026.104859","url":null,"abstract":"","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"159 1","pages":"104859"},"PeriodicalIF":9.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coherent/Semi-coherent Precipitation Behavior and Fracture Mechanisms of CoCrNi Multi-principal Element Alloys with High Strength over a Wide Temperature Range","authors":"Dan Xiao,Chuandong Wu,Weiming Huang,Shuai Shen,Qi Xu,Ailin Zhou,Yijing Zhou,Jingjing Wang,Shuang Yang,Zhanghua Gan,Jing Liu","doi":"10.1016/j.ijplas.2026.104864","DOIUrl":"https://doi.org/10.1016/j.ijplas.2026.104864","url":null,"abstract":"","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"1 1","pages":"104864"},"PeriodicalIF":9.8,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149208681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructural origins of enhanced creep resistance in laser printed Ti-6Al-4V","authors":"Zhun Liang ,&nbsp;Mingyang Zhang ,&nbsp;Zheng Guo ,&nbsp;Zongchang Guo ,&nbsp;Yinan Cui","doi":"10.1016/j.ijplas.2026.104637","DOIUrl":"10.1016/j.ijplas.2026.104637","url":null,"abstract":"<div><div>Creep resistance is critical for the reliability of engineering structures at high temperatures. In this study, <em>in situ</em> scanning electron microscope (SEM) creep experiments show that laser powder bed fusion fabricated Ti-6Al-4V (LPBF Ti-6Al-4V) exhibits a creep lifetime about three to five times longer than that of forged Ti-6Al-4V. Distinct creep failure mechanisms were identified, with grain boundary sliding dominating in the forged Ti-6Al-4V, while void-induced grain boundary separation controlled the LPBF Ti-6Al-4V. By integrating experiments with a multiphysics coupled microscale creep model that simultaneously captures diffusion creep, dislocation glide and climb, grain boundary sliding, and void evolution, the results suggest that the elongated grain morphology and lower dislocation density in LPBF Ti-6Al-4V contribute to its enhanced creep performance. A physics-informed neural network (PINN)-driven multiscale creep framework is developed to bridge the gap between the mechanistic microscale creep model and macroscale creep life prediction. This work provides new insights into the creep resistance of additively manufactured titanium alloys and presents a promising approach for multiscale creep life assessment.</div></div>","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"199 ","pages":"Article 104637"},"PeriodicalIF":12.8,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microstructure-induced fatigue scatter of additively manufactured inconel 718: Insight from multilevel simulations and dislocation-based strain gradient crystal plasticity","authors":"Xian-Chen Kuang ,&nbsp;Wu-Gui Jiang ,&nbsp;Long-Hui Mao ,&nbsp;Zhi-Kai Wu ,&nbsp;Fen-Cheng Liu ,&nbsp;Xiang Zhou ,&nbsp;Peng-Hang Ling ,&nbsp;Yang-Cheng Zhang ,&nbsp;Min Yi","doi":"10.1016/j.ijplas.2026.104632","DOIUrl":"10.1016/j.ijplas.2026.104632","url":null,"abstract":"<div><div>The fatigue performance of additively manufactured (AM) Inconel 718 is intrinsically governed by its grain morphology, necessitating a predictive understanding of the underlying plasticity-dominated mechanisms. To address this challenge, this study applies an integrated multilevel computational framework that explicitly bridges the process–structure–property–performance chain by coupling finite-element and cellular-automata (FE–CA) simulations of grain growth during laser powder bed fusion (LPBF), a deep neural network (DNN) for efficient material parameter calibration, and a strain-gradient crystal plasticity finite element (CPFE) model for fatigue life prediction. This unified framework enables, for the first time, a rigorous like-for-like comparison of three characteristic AM microstructures—equiaxed, columnar, and mixed grains—under a consistent computational and experimental calibration protocol, and thereby reveals new micromechanical insights into potential fatigue damage initiation from the plasticity perspective. Our simulations indicate that fatigue resistance is predominantly controlled by grain morphology and further modulated by morphology-induced anisotropy. Among them, equiaxed grains exhibit superior fatigue resistance to columnar and mixed grain morphologies, which is attributed to the activation of multiple slip systems and the resulting homogeneous deformation. In contrast, the strong texture in columnar grains gives rise to a pronounced “channeling effect”, leading to highly localized slip and a mismatch between regions of elevated plastic strain and actual damage accumulation. In terms of loading direction, the fatigue resistance under loading along the building direction (BD) is higher than that under loading along the transverse direction (TD). Crack initiation is predominantly predicted at high-angle grain boundaries and triple junctions, with the specific patterns highly sensitive to both grain morphology and loading direction. A key finding is the identification of a critical fatigue indicator parameter (FIP) threshold, beyond which fatigue life scatter intensifies significantly. While the CPFE model provides accurate predictions at intermediate strain amplitudes, its efficacy diminishes at higher strains due to the activation of alternative failure mechanisms. Overall, by integrating established computational methods, this work provides microstructure-sensitive insights and a practical framework for fatigue life prediction of AM materials, offering a potential pathway for AM process and microstructure optimization to achieve superior fatigue performance.</div></div>","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"198 ","pages":"Article 104632"},"PeriodicalIF":12.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146101602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating creep damage initiation at the mesoscale using high-resolution electron microscopy, crystal plasticity modelling, and a classification algorithm","authors":"Farhan Ashraf ,&nbsp;Nicolò Grilli ,&nbsp;Chen Liu ,&nbsp;Michael Salvini ,&nbsp;Catrin M. Davies ,&nbsp;Christopher E. Truman ,&nbsp;Mahmoud Mostafavi ,&nbsp;David Knowles","doi":"10.1016/j.ijplas.2026.104627","DOIUrl":"10.1016/j.ijplas.2026.104627","url":null,"abstract":"<div><div>Accurate modelling of plastic and creep deformation, along with the associated damage mechanisms in 316H stainless steel under high-temperature and complex loading conditions, is essential for ensuring the long-term structural integrity of power plant components. Robust physics-based models contribute to more accurate life assessment procedures, thereby improving safety and extending component service life under creep conditions. However, current approaches often lack accurate microstructure-sensitive models that can correlate experimentally observed local creep damage with key microstructural features such as grain orientation and morphology in creep damage prediction.</div><div>To address this knowledge gap, a combined modelling and experimental approach is employed to investigate creep damage initiation in 316H stainless steel at 550 °C. A crystal plasticity finite element (CPFE) model is developed to simulate the primary and secondary stages of creep deformation. To accurately predict local deformation under realistic boundary conditions, a new modelling strategy is introduced, embedding crystal plasticity domains within larger-scale geometries. Furthermore, a novel methodology is introduced to define damage initiation criterion by employing a classification algorithm to correlate experimentally observed creep damage with internal variables from the CPFE model. This data-driven approach enables the development of a predictive equation for identifying damaged grain boundaries. This equation represents a significant advancement over phenomenological approaches, such as the stress-modified ductility exhaustion (SMDE) model. The proposed model predicts approximately 67% of observed creep cavities at grain boundaries in the analysed regions, demonstrating the strong potential of a data-driven modelling framework for microstructure-sensitive damage prediction.</div></div>","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"198 ","pages":"Article 104627"},"PeriodicalIF":12.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146072352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Abnormal twinning mechanisms and martensitic transformation in Fe60Mn12Cr12Ni8Si8 high entropy alloy under cyclic tension-compression loading","authors":"Lin Guo ,&nbsp;Jiaxing Wu ,&nbsp;Ji Gu ,&nbsp;Dechuang Zhang ,&nbsp;Cheng Ma ,&nbsp;Yilong Dai ,&nbsp;Jianguo Lin ,&nbsp;Ian Baker ,&nbsp;Min Song","doi":"10.1016/j.ijplas.2026.104613","DOIUrl":"10.1016/j.ijplas.2026.104613","url":null,"abstract":"<div><div>Twinning and martensitic transformations are well-understood under monotonic loading, yet how stress reversal and the associated kinematic reversibility, inherent to cyclic deformation, affects these mechanisms remains insufficiently understood. Here, we systematically investigate the microstructural evolution of a metastable high entropy alloy Fe₆₀Mn₁₂Cr₁₂Ni₈Si₈ under cyclic tension-compression (CTC) loading. Multi-scale characterizations reveal that the cyclic stress reversal fundamentally alters the transformation pathway compared to the monotonic tension. The initial, undeformed material consists of a face-centered cubic γ phase. Monotonic tension primarily activates deformation-induced martensitic transformation, whereas CTC produces markedly different microstructural pathways depending on strain amplitude. At a low strain amplitude (0.5%), short-range glide of Shockley partial dislocations promotes extensive formation of HCP ε-martensite (a fraction of ∼68.3%). In contrast, high-strain-amplitude CTC loading (2.0%) activates an abnormal transformation-mediated twinning mechanism. This process, driven by the reversible motion of Shockley partial dislocation within confined ε-martensite, leads to a refined γ/γ_twin/ε nano-laminate structure with a spacing of ∼2.6 nm. Furthermore, we identify unconventional polymorphic transformation pathways accommodating the high local stress concentrations: (i) nucleation of body-centered cubic α′-martensite at a specific interface where the two γ phases maintain an 86° angle between their respective <span><math><msub><mrow><mo>(</mo><mrow><mn>11</mn><mover><mn>1</mn><mo>¯</mo></mover></mrow><mo>)</mo></mrow><mi>γ</mi></msub></math></span> planes, and (ii) a direct γ to body-centered tetragonal α-martensite transition via continuous lattice shearing along <span><math><mrow><mrow><mo>(</mo><mn>111</mn><mo>)</mo></mrow><msub><mrow><mo>[</mo><mrow><mn>11</mn><mover><mn>2</mn><mo>¯</mo></mover></mrow><mo>]</mo></mrow><mi>γ</mi></msub></mrow></math></span>. These mechanisms are attributed to the unique stress accommodation requirements in the highly confined nano-laminates. The resulting hierarchical microstructure not only relieves local stress concentrations but also contributes to the good cyclic durability. Overall, these findings establish an atomistic mechanistic link between cyclic reversibility and transformation/twinning pathway selection, and suggest a processing-enabled route to engineer heterogeneous γ/γ_twin/ε nano-laminate structure in bulk metastable alloys at room temperature.</div></div>","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"198 ","pages":"Article 104613"},"PeriodicalIF":12.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145993424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Obtaining superior strength-ductility synergy properties in a medium-entropy alloy via dual heterogeneous and TRIP effects","authors":"Wenjie Lu ,&nbsp;Bin Huang ,&nbsp;Rui Hu ,&nbsp;Xu-Sheng Yang","doi":"10.1016/j.ijplas.2026.104624","DOIUrl":"10.1016/j.ijplas.2026.104624","url":null,"abstract":"<div><div>Activating additional strain-hardening mechanisms is essential to achieve superior strain hardening capacity and strength-ductility synergy in precipitation-hardened alloys. In this work, we introduce a synergistic strategy that combines dual-heterogeneous structures (DHS) with the transformation-induced plasticity (TRIP) effect in a precipitation-hardened medium-entropy alloy (MEA), thereby enabling multiple strain-hardening mechanisms for the exceptional strength-ductility combination. The tailored alloy showcases a high yield strength of ∼ 1290 MPa, an ultimate tensile strength of ∼ 1737 MPa, and an excellent fracture elongation of ∼ 36.9% at ambient temperature, exhibiting a ∼ 162% increase in yield strength without compromising uniform ductility, compared to its single-phase solid solution counterpart. Microstructural analyses reveal that the enhanced yield strength stems primarily from precipitation hardening and extra hetero-deformation induced (HDI) hardening. Furthermore, plastic deformation mechanism investigations demonstrate that the remarkable work-hardening capacity (&gt; 3 GPa) results from the combined effects of dynamically enhanced HDI hardening and the activated TRIP effect during tensile deformation. These multiple and sustained strain-hardening mechanisms underpin the alloy’s exceptional strength-ductility synergy. Our study provides a promising strategy for designing high-performance structural materials.</div></div>","PeriodicalId":340,"journal":{"name":"International Journal of Plasticity","volume":"198 ","pages":"Article 104624"},"PeriodicalIF":12.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}