Additive manufacturing最新文献_第3页

Convolutional autoencoder frameworks for projection multi-photon 3D printing 投影多光子3D打印的卷积自编码器框架

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104929

Ishat Raihan Jamil , Jason E. Johnson , Xianfan Xu

{"title":"Convolutional autoencoder frameworks for projection multi-photon 3D printing","authors":"Ishat Raihan Jamil , Jason E. Johnson , Xianfan Xu","doi":"10.1016/j.addma.2025.104929","DOIUrl":"10.1016/j.addma.2025.104929","url":null,"abstract":"<div><div>Projection multi-photon 3D printing is an emerging technique for fabricating micro-nano structures at exceptionally high speeds. It leverages the use of a digital micromirror (DMD) to project and print entire 2D layers at once, offering higher throughput and scalability than conventional point-by-point laser scanning. While two photon polymerization is widely regarded as an outstanding method for achieving high dimensional accuracy at the nanoscale, the projection aspect introduces a new set of challenges, such as under-printing due to oxygen inhibition. The inherently complex photopolymerization dynamics make it difficult to model and simulate efficiently. To address this, we introduce a data-driven methodology employing deep learning to build a surrogate model of the printing process and an inverse model for 2D DMD pattern optimization to achieve desirable printed shapes. By printing diverse shapes morphed by various parametrization schemes, we built a dataset for training convolutional encoder-decoder (autoencoder) neural networks. The trained surrogate accurately maps input DMD patterns to their final printed geometries, capturing nonlinearities introduced by process physics. Inverting the inputs and outputs further enabled us to train an inverse model for generating pre-compensated DMD patterns to print desirable target geometries. Experimental findings demonstrate that this deep learning approach accurately predicts printed outputs and enhances dimensional accuracy in the printing of 2D layers. Our results reveal a viable approach to overcome inhibition-induced constraints, enabling more accurate projection-based multi-photon printing at the micro and nanoscale.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104929"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-layer thermal history prediction framework for directed energy deposition based on extended physics-informed neural networks (XPINN) 基于扩展物理信息神经网络（XPINN）的定向能沉积多层热历史预测框架

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104953

Bohan Peng, Ajit Panesar

{"title":"Multi-layer thermal history prediction framework for directed energy deposition based on extended physics-informed neural networks (XPINN)","authors":"Bohan Peng, Ajit Panesar","doi":"10.1016/j.addma.2025.104953","DOIUrl":"10.1016/j.addma.2025.104953","url":null,"abstract":"<div><div>This paper presents an eXtended physics-informed neural networks (XPINN)-based framework for predicting the temperature history during a multi-layer Directed Energy Deposition (DED) process. The proposed XPINN-based framework, advancing from its PINN-based counterpart, demonstrates significant accuracy improvement, around <span><math><mrow><mn>50</mn><mo>%</mo></mrow></math></span> reduction in RMSE and maximum absolute error, and extended capability of temperature history prediction with domain decomposition for more complex configurations such as interpass time, void, and interruption of scan that are prevalent in real-life DED designs. It is validated via a series of 2D benchmark tests against numerical simulations with an increasing degree of complexity. The effect of different domain decompositions is compared and discussed. Strategies that improve the training outcome are also proposed and analysed. With the enhanced capability of working on more complex configurations while retaining the characteristic availability of derivative information, the proposed framework brings process-ware design optimisation based on scientific machine learning (SciML) techniques one step closer to the application to real-life additive manufacturing applications.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104953"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spatial modulation of eutectoid element in melt pool by EB-PBF for constructing high-performance heterogeneous titanium alloys 用EB-PBF对熔池中共析元素的空间调制制备高性能非均质钛合金

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104948

Jiayin Li , Bowen Ma , Dongxu Chen , Yuchuan Jiang , Xuan Luo , Dongdong Li , Pan Wang

{"title":"Spatial modulation of eutectoid element in melt pool by EB-PBF for constructing high-performance heterogeneous titanium alloys","authors":"Jiayin Li , Bowen Ma , Dongxu Chen , Yuchuan Jiang , Xuan Luo , Dongdong Li , Pan Wang","doi":"10.1016/j.addma.2025.104948","DOIUrl":"10.1016/j.addma.2025.104948","url":null,"abstract":"<div><div>The construction of heterogeneous structures for synergistic enhancement of strength and ductility in metallic materials represents a research hotspot in materials science. Additive manufacturing has achieved progress in fabricating heterogeneous titanium alloys, yet current designs primarily rely on single-phase boundary regulation, lacking multidimensional synergy in controlling precipitate distribution and grain orientation, thus hindering breakthroughs in overcoming the strength-ductility trade-off. Here, we demonstrate the fabrication of high-performance titanium alloys with hierarchical precipitate structure (HPS) via spatial control of eutectoid decomposition during electron beam powder bed fusion (EB-PBF). These structures are characterized by alternating Cu-rich solute matrices and ultrafine-grained (UFG) domains enriched with multi-scale Ti<sub>2</sub>Cu precipitates. The alloy achieved an ultimate tensile strength of 1244 MPa, a 37.9 % increase compared to the as-bult Ti6Al4V, while maintaining good ductility (15.7 %). This exceptional mechanical performance is attributed to multi-scale precipitation strengthening facilitated by fine Ti<sub>2</sub>Cu dispersions, heterogeneous deformation-induced strengthening across hierarchical domains, and crack deflection accompanied by micro-shear banding, which collectively enhances fracture resistance by dissipating crack propagation energy. Our findings establish a novel pathway for spatially controlled phase decomposition in AM, providing a promising approach for designing damage-tolerant, high-strength titanium alloys. This work opens new avenues for advanced applications in aerospace, biomedical, and structural components.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104948"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144912628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid forming of programmable shaped morphogenic composite through additive manufacturing & frontal polymerization 通过增材制造和正面聚合快速成形可编程成形成型复合材料

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104911

Ivan C.L. Wu, Jeffery W. Baur

{"title":"Rapid forming of programmable shaped morphogenic composite through additive manufacturing & frontal polymerization","authors":"Ivan C.L. Wu, Jeffery W. Baur","doi":"10.1016/j.addma.2025.104911","DOIUrl":"10.1016/j.addma.2025.104911","url":null,"abstract":"<div><div>Compared to thermoplastics, continuous fiber thermosets offer the potential for diverse reaction chemistry, improved thermo-mechanical properties, and new processing routes. In this work, flat preforms of additively deposited reactive resin infused fiber tows (ADRRIFT) are combined with frontally polymerizable gels of dicyclopentadiene (DCPD) to autonomously produce, upon initiation of frontal polymerization (FP), cured composites with controlled curvature. These morphogenic composites provide a low initiation energy (<span><math><mo>≈</mo></math></span>10–20 J) and rapid (<span><math><mrow><mo>≈</mo><mn>70</mn><mspace></mspace><msup><mrow><mi>cm</mi></mrow><mrow><mn>2</mn></mrow></msup></mrow></math></span>/<span><math><mi>min</mi></math></span>) method to form 3D shaped composites. Using an analytical model, 2D printed patterns of continuous carbon fiber tows are designed to produce shapes with an apparent Gaussian curvature that is positive (parabolic dish), zero (cone), and negative (saddle). To achieve the strain needed for desired shapes, these morphogenic composites have low fiber volume fraction (FVF), 3%–9%. However, we also demonstrate in this work that the shaped morphogenic composites can serve as rapid tooling for DCPD infused laminates with higher FVF (30%–42%) and mechanical stiffness. Due to the inherent surface chemistry, cured laminates easily separate from the shaped tooling without additional release agents. Together these approaches provide rapid manufacturing of shaped composites with a range of FVF and properties for application constrained in transportation volume and energy expenditure.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104911"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High compressive energy absorption and shape recovery behavior of additively manufactured textile-inspired cylindrical braided metamaterials 增材制造的纺织启发圆柱形编织超材料的高压缩能吸收和形状恢复行为

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104925

Ajay Jayswal, Polyxeni P. Angelopoulou, Sargun Singh Rohewal, Logan T. Kearney, Sumit Gupta, Christopher C. Bowland, Michael D. Toomey, Amit K. Naskar

{"title":"High compressive energy absorption and shape recovery behavior of additively manufactured textile-inspired cylindrical braided metamaterials","authors":"Ajay Jayswal, Polyxeni P. Angelopoulou, Sargun Singh Rohewal, Logan T. Kearney, Sumit Gupta, Christopher C. Bowland, Michael D. Toomey, Amit K. Naskar","doi":"10.1016/j.addma.2025.104925","DOIUrl":"10.1016/j.addma.2025.104925","url":null,"abstract":"<div><div>Mechanical metamaterials (MMs) are engineered structures with unique mechanical properties that arise from their unique spatial arrangement or lattice-like structure. The most commonly designed MMs such as honeycomb and re-entrant auxetics are prone to failure at the sharp corners and weak joints due to the increased stress concentration under deformation. To mitigate this challenge, braided MM structures involving intertwining threads of nylon—forming curved unit cells—have been studied. These textile-inspired cylindrical braided metamaterials (CBMMs) with contrasting unit cells, namely diamond and regular CBMMs, were fabricated by 3D printing. The layer-by-layer deposited structure built by fused filament fabrication delivered an assembly of overlapped threads that are fused at the contact point. To understand deformation behavior of these MMs, finite element models were developed for various load scenarios including quasi-static compression, cyclic and creep loads at room temperature. Stress distribution, deformation mechanisms, and failure modes were analyzed and validated by experiments to analyze the geometries and associated performance. The diamond CBMMs showed stress softening at 30 % compressive strain, withstanding a load of ∼440 N, whereas the regular CBMMs at 50 % strain experienced ∼250 N. The diamond CBMMs delivered higher creep resistance under sustained load and better energy absorption under cyclic loading than the regular CBMMs. The latter, however, exhibited 94 % shape recovery in contrast to 88 % recovery in former prototype during their first cyclic load. This study helps design mechanical lightweight devices that endure significant sustained load and exhibit enhanced energy absorption and shape recovery characteristics in cyclic loading.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104925"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144852417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identifying fracture location in additively manufactured samples based on defect characteristics: Demonstration using AlSi10Mg 基于缺陷特征的增材制造样品的断裂位置识别：使用AlSi10Mg的演示

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104935

Nancy Huang , Erik T. Furton , Yasham A. Mundada , Allison M. Beese

{"title":"Identifying fracture location in additively manufactured samples based on defect characteristics: Demonstration using AlSi10Mg","authors":"Nancy Huang , Erik T. Furton , Yasham A. Mundada , Allison M. Beese","doi":"10.1016/j.addma.2025.104935","DOIUrl":"10.1016/j.addma.2025.104935","url":null,"abstract":"<div><div>A new metric was developed to quantify the impact of surface-connected defects and internal pores of different morphologies, namely irregular lack of fusion (LoF) pores and spherical keyhole pores, on the mechanical properties and fracture location of AlSi10Mg tensile samples fabricated using laser powder bed fusion additive manufacturing. As defect volume alone has been shown to be insufficient to predict fracture location, the proposed defect impact metric (DIM) incorporates contributions from additional defect features, including proximity to the surface, interaction with neighboring defects, morphology, and reduction in load-bearing cross-sectional area to better assess a defect’s propensity for corresponding to fracture location. The fracture location of keyhole samples was captured by large surface-connected defects with numerous neighboring defects and resulted in increased losses in load-bearing area. In contrast, LoF samples fractured at regions with either large surface-connected defects or large internal pores with many defects in close proximity, high curvatures, and large projected areas. The proposed DIM outperformed existing defect-based frameworks in identifying fracture locations in both LoF and keyhole samples by incorporating surface roughness, defect projected area, and interactions between defects based on distance, volume, and configuration. Additionally, the maximum DIM value within the fracture range was more strongly correlated to strength and ductility than porosity or defect size for LoF samples, demonstrating the potential of the DIM to non-destructively assess the effects of defects on mechanical behavior. The broader applicability of the DIM framework was demonstrated in its ability to capture fracture in both PBF-LB AlSi10Mg and Alloy 718.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104935"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Binder-powder interactions in binder jetting: Binder drying, layer shifting, and inter-layer binding 粘结剂喷射过程中粘结剂与粉末的相互作用：粘结剂干燥、层移和层间粘结

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104951

Erlei Li, Wentao Yan

{"title":"Binder-powder interactions in binder jetting: Binder drying, layer shifting, and inter-layer binding","authors":"Erlei Li, Wentao Yan","doi":"10.1016/j.addma.2025.104951","DOIUrl":"10.1016/j.addma.2025.104951","url":null,"abstract":"<div><div>Binder jet additive manufacturing shows significant potential for cost-effective massive production of complex-shaped parts. However, defects like layer shifting degrade the part quality, hindering its widespread adoption. In this work, a resolved computational fluid dynamics and discrete element method coupling model is developed to investigate the detailed physics in the binder jetting process, including binder drying, layer shifting, and inter-layer binding. Non-uniform temperature distribution of the primitive is caused by the uneven powder layer thickness and inherent heating path from the top to the bottom. The primitive is displaced downwards and forwards under the action of normal and shear forces resulting from the motion of the roller and powder particles above it. Longer drying time enables the binder to be stiffer and further withstand shearing during the spreading of new powder layer. Inter-layer binding is reproduced by simulating two-layer binder jetting process, where the weak binding case shows disconnected binders. The simulation results align well with experimental observations and analytical predictions, accurately capturing powder spattering, liquid spreading behaviour, layer shifting, and droplet penetration dynamics. This study offers comprehensive insight into the fundamental mechanisms of the binding process, and provides guidance for defect mitigation to address current challenges in binder jetting technology.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104951"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3D photocuring for circuit fabrication: Optimization of UV penetration properties via the morphology of silver particles 用于电路制造的三维光固化：通过银粒子的形态优化紫外线穿透性能

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104931

Mei-Ling Yang , Yi-Tian Yang , Guo-Xiang Zhou , Zhi-Hua Yang , De-Chang Jia , Yu Zhou

{"title":"3D photocuring for circuit fabrication: Optimization of UV penetration properties via the morphology of silver particles","authors":"Mei-Ling Yang , Yi-Tian Yang , Guo-Xiang Zhou , Zhi-Hua Yang , De-Chang Jia , Yu Zhou","doi":"10.1016/j.addma.2025.104931","DOIUrl":"10.1016/j.addma.2025.104931","url":null,"abstract":"<div><div>Photocuring printing technology is extensively applied in the manufacturing complex structure for electrical components owing to its excellent printing flexibility and efficiency. However, the limited penetration depth of UV photocured silver pastes (UVSPs), resulting from the complex interaction between incident light and conductive fillers, restricts circuit fabrication. In this work, we optimized the selection of flaky silver particles as UVSP fillers instead of the conventional spherical ones by simulating the penetration distribution of incident light in UVSPs with various morphologies through the finite element method. The fluidity, polymerization behavior, and printing properties of the UVSPs were investigated. As a result, flaky particles filled UVSP with the unique light penetration properties can be used for high-precision film printing, and the printing linewidth accuracy can be improved by over 20 μm under the same exposure conditions. Furthermore, the conductive film with flaky particles effectively prevented curling and peeling during low-solid-content sintering and exhibits a good electrical conductivity of 1.26 × 10<sup>6</sup> S/m. This study provides valuable technical guidance for the rapid preparation of low-cost, high-precision circuit printing using photocuring printing technology, which significantly reducing the manufacturing cost of printed electronic components.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104931"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144880393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-wavelength centrifugal processing enables 3D printing of functionally graded medical devices: Construction and validation of mechanically tunable orthodontic aligners 多波长离心加工使功能分级医疗设备的3D打印成为可能：机械可调正畸对准器的构建和验证

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104930

Xincheng Yin , Qian Zhang , Yuqi Li , Daxin Wu , Siyu Wang , Yanzhe Fu , Siyang Wei , Na Li , Xun Chen , Xiang Ding , Chao Wang , Yubo Fan , Jianmin Han , Jiebo Li

{"title":"Multi-wavelength centrifugal processing enables 3D printing of functionally graded medical devices: Construction and validation of mechanically tunable orthodontic aligners","authors":"Xincheng Yin , Qian Zhang , Yuqi Li , Daxin Wu , Siyu Wang , Yanzhe Fu , Siyang Wei , Na Li , Xun Chen , Xiang Ding , Chao Wang , Yubo Fan , Jianmin Han , Jiebo Li","doi":"10.1016/j.addma.2025.104930","DOIUrl":"10.1016/j.addma.2025.104930","url":null,"abstract":"<div><div>Functionally Graded Materials (FGMs) have gained substantial attention in biomedical device development, particularly for creating functionally adaptive solutions. In recent years, grayscale vat photopolymerization 3D printing has emerged as a promising technology for FGMs fabrication owing to its advantages of high efficiency and precision. However, the residual unreacted monomers in grayscale printing components have brought a large amount of toxicity, becoming a bottleneck restricting their application in biomedical fields. This study proposes a multi-wavelength stepwise curing strategy that integrates wavelength-selective photoabsorber (PA) into the resin, using clear orthodontic aligners as a platform, to achieve a highly polymerized surface state while enabling gradient mechanical properties. Based on the integration of light field simulation and photopolymerization kinetics, a mathematical model was developed to predict the degree of conversion (DoC) distribution in multi-layer printing. The printed aligners demonstrated validated biocompatibility, with <em>in vitro</em> experiments showing that grayscale modulation effectively reduced orthodontic forces on non-targeted teeth while resisting stress relaxation during 7-day continuous monitoring. Furthermore, a centrifugation-based post processing method was developed to effectively eliminate surface layer steps and reduce bacterial adhesion. This process is compatible with the majority of current photopolymer resin systems and provides a technical framework for developing advanced functional medical devices.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104930"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144864433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preventing microcracks between directed energy deposited Hastelloy X and IN792 substrate by adding IN625 buffer layer 通过添加IN625缓冲层防止定向能沉积哈氏合金X与IN792衬底之间的微裂纹

IF 11.1 1区工程技术

Additive manufacturing Pub Date : 2025-07-25 DOI: 10.1016/j.addma.2025.104947

Ye Chan Sung , Beom Jun Kim , Gideok Park , Seong-Moon Seo , Hyungsoo Lee , Hyoung Seop Kim , Jung Gi Kim

{"title":"Preventing microcracks between directed energy deposited Hastelloy X and IN792 substrate by adding IN625 buffer layer","authors":"Ye Chan Sung , Beom Jun Kim , Gideok Park , Seong-Moon Seo , Hyungsoo Lee , Hyoung Seop Kim , Jung Gi Kim","doi":"10.1016/j.addma.2025.104947","DOIUrl":"10.1016/j.addma.2025.104947","url":null,"abstract":"<div><div>Recently, laser-based additive manufacturing (AM) has emerged as a promising method for repairing complex-shaped components. Although small heat-affected zones and high degrees of freedom expand the processing window for AM, microcrack initiation can occur depending on the combination of parent materials. In particular, frequent microcracking has been observed in additively manufactured Hastelloy X (HX) despite its extensive use in hot components for gas turbine systems. To mitigate this issue, Inconel (IN) 625 was deposited as a buffer layer before the deposition of HX to prevent elemental diffusion between HX and IN792 substrate. Consequently, the IN625 buffer layer reduced the W migration from the IN792 substrate to the HX deposit layer, suppressing segregation at the grain boundaries. In addition, the enhanced Nb content in the HX deposit layer, owing to the high Nb content in the IN625 buffer layer, stabilized the primary carbides in the interdendritic region. By combining these two effects, microcracking was suppressed when the IN625 buffer layer was placed between the IN792 substrate and the HX deposit layer. The suppression of microcracks near the interface delayed crack initiation and propagation during tensile tests, resulting in greater elongation with the IN625 buffer layer compared to the specimens without it. This finding highlights the critical role of selecting the deposit layers in influencing microcrack initiation in partially repaired components, suggesting that designing a sequence of deposit layers can be an effective strategy for AM without extensive alloying modifications for additive manufacturing.</div></div>","PeriodicalId":7172,"journal":{"name":"Additive manufacturing","volume":"110 ","pages":"Article 104947"},"PeriodicalIF":11.1,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0