Additive manufacturing letters最新文献_第10页

Damage modes and mechanical properties of Ti6Al4V lattice structures under transverse impact loading Ti6Al4V晶格结构在横向冲击载荷下的损伤模式与力学性能

IF 4.2

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-05-30 DOI: 10.1016/j.addlet.2025.100294

Minghao Huang , Yixiao Luo , Tenglong Xie , Xin Yang , Shenghang Xu , Chen Chang , Chao Ding , Huiping Tang

{"title":"Damage modes and mechanical properties of Ti6Al4V lattice structures under transverse impact loading","authors":"Minghao Huang , Yixiao Luo , Tenglong Xie , Xin Yang , Shenghang Xu , Chen Chang , Chao Ding , Huiping Tang","doi":"10.1016/j.addlet.2025.100294","DOIUrl":"10.1016/j.addlet.2025.100294","url":null,"abstract":"<div><div>The light-weighting of high-end equipment structural components is an eternal pursuit in structural engineering. The development of Laser Powder Bed Fusion (L-PBF) technology has enabled the easy fabrication of lattice structure materials, which exhibit exceptional mechanical properties. The present study investigates the mechanical properties and deformation processes of ten Ti6Al4V lattice structures (Primitive, Diamond, Fischer-Koch, I-WP, Gyroid; 6-Layered Plate, 4-Layered Plate, Truss Plate; Auxetic honeycomb X, and Auxetic honeycomb Y) under a transverse impact loading. Firstly, it was found that the truss plate and 4-layered plate exhibited the highest specific absorbed energy (SAE) of 38.67 J/(g∙cm<sup>-3</sup>) and specific peak force (SPF) of 6033 N/(g∙cm<sup>-3</sup>), respectively. The Negative Poisson's ratio structure demonstrated the best damage tolerance during the impact test procedure. Meanwhile, the TPMS structures, which exhibit similar deformation behavior and shear failure modes, have closely matched peak force values. These findings provide critical guidance for aerospace and automotive applications requiring mass-efficient energy absorption.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"14 ","pages":"Article 100294"},"PeriodicalIF":4.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144194651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dimensionless process windows in laser-based powder bed fusion of AISI 316L using ring-shaped beam profiles 基于环形光束轮廓的aisi316l激光粉末床熔合无因次加工窗口

IF 4.2

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-04-28 DOI: 10.1016/j.addlet.2025.100284

Jonas Grünewald, Katrin Wudy

{"title":"Dimensionless process windows in laser-based powder bed fusion of AISI 316L using ring-shaped beam profiles","authors":"Jonas Grünewald, Katrin Wudy","doi":"10.1016/j.addlet.2025.100284","DOIUrl":"10.1016/j.addlet.2025.100284","url":null,"abstract":"<div><div>The research trend to investigate the influence of alternative beam profiles on the process and component properties in laser-based powder bed fusion raises the question of how to compare the processes and process results generated with various beam profiles in different sizes. The current state of research mainly examines the process simplified on a single-track basis or addresses isolated aspects, such as the change in beam profile and size with constant absolute process parameters, which neglects the cross-effects of these parameters. Therefore, this paper presents a new approach to consider varied process parameters and their cross effects. The approach is based on a simple heat conduction model and allows the creation of beam shape and size-independent process maps. These dimensionless process maps are created by replacing the common dimensioned process parameters (laser power and scan speed) with combined dimensionless parameters (dimensionless enthalpy and Peclét number, each extended by a dimensionless hatch distance). This way, the parameters consider material and beam properties. Within the process maps, the process boundaries are predicted by simple geometric conditions of the calculated melt pools using the introduced heat conduction model. The model is experimentally validated by conducting a comprehensive parameter study using a multidimensional design of experiments with seven different beam profiles in various sizes and varying laser power, scanning speed, and hatch distance processing AISI 316L. The relative density and surface roughness are evaluated in the experiments. The predicted and experimentally determined process limits are in excellent agreement.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"14 ","pages":"Article 100284"},"PeriodicalIF":4.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143906639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An activity-based parametric cost analysis for upcycling machining chips to produce feedstock for sustainable additive friction stir deposition 基于作业的切削屑升级回收参数成本分析，以生产可持续添加剂搅拌摩擦沉积的原料

IF 4.2

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-05-08 DOI: 10.1016/j.addlet.2025.100288

Sweta Baruah, Joshua Hoekstra, Tony Schmitz

{"title":"An activity-based parametric cost analysis for upcycling machining chips to produce feedstock for sustainable additive friction stir deposition","authors":"Sweta Baruah, Joshua Hoekstra, Tony Schmitz","doi":"10.1016/j.addlet.2025.100288","DOIUrl":"10.1016/j.addlet.2025.100288","url":null,"abstract":"<div><div>With the growing emphasis on supply chain resilience and efficiency, manufacturers are increasingly exploring sustainable material reuse strategies. One promising approach is the upcycling of machining chips into usable feedstock for additive friction stir deposition (AFSD), a solid-state additive manufacturing process. AFSD has demonstrated potential for integrating into hybrid manufacturing workflows, offering advantages such as reduced material waste and enhanced process sustainability. However, for chip upcycling to produce AFSD feedstock to be viable, its production cost must be accurately assessed and compared to conventional feedstock options. Estimating these costs poses challenges due to the complexity of the upcycling process and its associated variables. This paper presents a cost modeling framework for the production of upcycled bars from machining chips, specifically as AFSD feedstock. The proposed model incorporates key cost factors such as material preparation, compaction, and processing efficiency. A case study is conducted to compare the cost of upcycled feedstock with commercially available AFSD feedstock, providing insights into the economic feasibility of chip upcycling for AFSD applications.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"14 ","pages":"Article 100288"},"PeriodicalIF":4.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A generalized mechanical blocking criterion for the columnar-to-equiaxed transition during additive manufacturing 增材制造过程中柱向等轴过渡的广义机械阻塞准则

IF 4.2

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-05-28 DOI: 10.1016/j.addlet.2025.100290

Christopher A. Hareland , Maria-Ioanna T. Tzini , Florian Hengsbach , Gregory B. Olson , Peter W. Voorhees

{"title":"A generalized mechanical blocking criterion for the columnar-to-equiaxed transition during additive manufacturing","authors":"Christopher A. Hareland , Maria-Ioanna T. Tzini , Florian Hengsbach , Gregory B. Olson , Peter W. Voorhees","doi":"10.1016/j.addlet.2025.100290","DOIUrl":"10.1016/j.addlet.2025.100290","url":null,"abstract":"<div><div>We present a fully general model for the columnar-to-equiaxed transition (CET) that extends the classical mechanical blocking models to completely arbitrary nucleation-undercooling distributions and dendrite growth laws. The general approach is compared to the classical models for a recently reported die steel developed for additive manufacturing (AM). Notably, the models employ a completely pre-characterized and physically motivated set of material parameters, i.e., the kinetic coefficients and nucleation parameters. A method of calculating the nucleation parameters using CALPHAD (CALculation of PHAse Diagrams) software is also demonstrated and discussed. The general model can directly utilize this full distribution of nucleation parameters, as well as the full dendrite growth law obtained from a CALPHAD-coupled model that incorporates non-equilibrium kinetic effects in multicomponent alloys. Finally, a morphology selection map is constructed for the printable die steel to predict regions of equiaxed dendritic, columnar dendritic, and plane-front solidification, showing that the general model of the CET provides higher fidelity in predicting regions of columnar and equiaxed solidification, and that tailoring the inoculant particle-size distribution is a viable method of controlling the CET under AM processing conditions.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"14 ","pages":"Article 100290"},"PeriodicalIF":4.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144205493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toward an Entropy-based Method for Multi-Physics Optimization of Additively Manufactured Cellular Materials 基于熵的增材制造细胞材料多物理场优化方法研究

IF 4.2

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-05-02 DOI: 10.1016/j.addlet.2025.100285

Tyler D. Smith, Dhruv Bhate

引用次数: 0

Effectiveness of residual stress and pores on the β-grain refinement in L-PBF Ti6Al4V processed with hot isostatic pressing 残余应力和孔隙对热等静压L-PBF Ti6Al4V β晶粒细化的影响

IF 4.2

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-05-15 DOI: 10.1016/j.addlet.2025.100291

Vivek K Sahu , Hector R. Siller , M.H. Herman Shen

{"title":"Effectiveness of residual stress and pores on the β-grain refinement in L-PBF Ti6Al4V processed with hot isostatic pressing","authors":"Vivek K Sahu , Hector R. Siller , M.H. Herman Shen","doi":"10.1016/j.addlet.2025.100291","DOIUrl":"10.1016/j.addlet.2025.100291","url":null,"abstract":"<div><div>The present study examines the effect of HIP (Hot Isostatic Pressing) treatment above the β-transus temperature on porosity reduction and its effect on the transition from columnar to equiaxed prior β-grains in L-PBF (Laser Powder Bed Fusion) Ti6Al4V. HIP treatment was conducted at a holding temperature of 1050 °C and a pressure of 120 MPa for 2 h on the L-PBF Ti6Al4V samples, which were deposited with four different scanning speeds of 300 mm/s, 400 mm/s, 650 mm/s, and 1100 mm/s, while keeping the other deposition parameters constant. The sample with the higher scanning speed (1100 mm/s) exhibits the highest area fraction of lack-of-fusion defects, leading to more pronounced equiaxed β-grain refinement and texture weakening compared to the sample that has the lowest scanning speed (300 mm/s) and negligible lack-of-fusion defect. During the HIP treatment, the local stresses around the sharp tips of the defects, along with the inherent residual stresses in the as-built samples, contribute to the dynamic recrystallization below and above the β-transus temperature.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"14 ","pages":"Article 100291"},"PeriodicalIF":4.2,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the mechanical isotropy and corrosion behavior of tantalum produced via laser beam powder bed fusion 激光粉末床熔合制备钽的力学各向同性和腐蚀行为

IF 4.7

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-08-13 DOI: 10.1016/j.addlet.2025.100317

Andrew B. Kustas , Erin Barrick , Jonathan Pegues , Hannah Sims , Mary L. Gucik , Michael Melia , Alexander E. Wilson-Heid , Joshua D. Sugar , Eric D. Hintsala , Kevin M. Schmalbach , Frank W. DelRio , Tyler LeBrun

{"title":"On the mechanical isotropy and corrosion behavior of tantalum produced via laser beam powder bed fusion","authors":"Andrew B. Kustas , Erin Barrick , Jonathan Pegues , Hannah Sims , Mary L. Gucik , Michael Melia , Alexander E. Wilson-Heid , Joshua D. Sugar , Eric D. Hintsala , Kevin M. Schmalbach , Frank W. DelRio , Tyler LeBrun","doi":"10.1016/j.addlet.2025.100317","DOIUrl":"10.1016/j.addlet.2025.100317","url":null,"abstract":"<div><div>Tantalum (Ta) is a refractory metal with excellent corrosion resistance and biocompatability, high melting temperature and density, and good electrical and thermal conductivity, with applications in capacitors, medical implants and devices, linings in the chemical industry, penetrator projectiles, and nuclear reactors. In this work, we examined the mechanical isotropy and corrosion behavior of tantalum produced through laser beam powder bed fusion (PBF-LB). Electron backscatter diffraction (EBSD), tensile tests, nanoindentation, and environmental and galvanic corrosion tests were utilized to establish structure-property relationships as a function of orientation, temperature, and pH. EBSD showed the horizontal and vertical orientations had different grain size distributions and weak texture. From tensile testing, PBF-LB Ta exhibited comparable strain-at-failure relative to wrought Ta, with significantly higher yield and ultimate strengths relative to ASTM <span><span>B708</span><svg><path></path></svg></span>. Room-temperature nanoindentation confirmed weak mechanical anisotropy via complementary EBSD images and showed small variations in reduced modulus and hardness after annealing to 800 °C due to oxide formation. The environmental corrosion tests in HCl (acid), NaCl (neutral), and KOH (basic) suggested the corrosion current density for PBF-LB Ta was lower than wrought, signifying slower corrosion for PBF-LB Ta. The passive nature of PBF-LB and wrought Ta was observed during galvanic corrosion; when coupled with titanium, aluminum, or stainless steel, most systems did not show corrosion after 24 hr. In all, the results showed that PBF-LB Ta has comparable or, in some cases, superior mechanical and corrosion properties to wrought Ta.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"14 ","pages":"Article 100317"},"PeriodicalIF":4.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Microstructure homogenization of laser powder bed fusion support-free low angle IN718 walls through heat treatment 热处理后激光粉末床熔合无支架低角IN718壁的显微组织均匀化

IF 4.7

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-07-24 DOI: 10.1016/j.addlet.2025.100312

Minsol Park, Mudit Kesharwani, Mohammad Attarian Shandiz, Mathieu Brochu

引用次数: 0

Combining fusion-based and solid-state additive manufacturing: Investigation of additive DED structures with friction surfacing interlayer 融合与固态增材制造的结合：具有摩擦表面夹层的增材DED结构研究

IF 4.7

Additive manufacturing letters Pub Date : 2025-07-01 Epub Date: 2025-07-23 DOI: 10.1016/j.addlet.2025.100302

Zina Kallien , Eloise Eimer , Arne Roos , Victor Ortolland , Lars Rath , Stewart Williams , Benjamin Klusemann

{"title":"Combining fusion-based and solid-state additive manufacturing: Investigation of additive DED structures with friction surfacing interlayer","authors":"Zina Kallien , Eloise Eimer , Arne Roos , Victor Ortolland , Lars Rath , Stewart Williams , Benjamin Klusemann","doi":"10.1016/j.addlet.2025.100302","DOIUrl":"10.1016/j.addlet.2025.100302","url":null,"abstract":"<div><div>Fusion-based additive manufacturing (AM) techniques face some challenges for aluminium due to the necessity of material melting resulting in insufficient bonding. The present work provides a novel insight into the combination of fusion-based and solid-state AM approaches to successfully generate structures from different aluminium alloys. Specifically, the friction-based solid-state AM technique of friction surfacing (FS) is used to generate an interlayer structure on AA2050 substrate material. On top of this structure, additional AA5087 is deposited via Wire and Arc Additive Manufacturing (WAAM). For the FS interlayer structure, two different alloys, AA5083 and AA7050, are explored. Additionally, the effect of inter-layer rolling is investigated for the final WAAM structure. The built structures are investigated with special focus on the interfaces, i.e., FS deposit-to-substrate and WAAM deposit-to-FS deposit interfaces. In the cross sections, no defects could be detected at the FS deposit-to-substrate interfaces and the structures did not show visible cracks at the WAAM deposit-to-FS deposit interfaces. The investigation showed that the mechanical properties of the WAAM structure improve when inter-layer rolling is applied, leading to homogeneous mechanical properties across the interfaces. The study highlights that FS as friction-based solid-state AM process is capable to build interlayer structures for material combinations, which cannot be achieved directly via a fusion-based process. The approach of combining different AM techniques can be advantageous not only to achieve a dissimilar material combinations but also to build hybrid structures with locally optimized properties.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"14 ","pages":"Article 100302"},"PeriodicalIF":4.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hot forming behavior of tungsten carbide reinforced Ni-Based superalloy 625 additively manufactured by laser directed energy deposition 激光定向能沉积增材制备碳化钨增强镍基高温合金625的热成形行为

IF 4.2

Additive manufacturing letters Pub Date : 2025-04-01 Epub Date: 2025-01-07 DOI: 10.1016/j.addlet.2025.100267

Gökhan Ertugrul , Aliakbar Emdadi , Angelika Jedynak , Sabine Weiß , Sebastian Härtel

{"title":"Hot forming behavior of tungsten carbide reinforced Ni-Based superalloy 625 additively manufactured by laser directed energy deposition","authors":"Gökhan Ertugrul , Aliakbar Emdadi , Angelika Jedynak , Sabine Weiß , Sebastian Härtel","doi":"10.1016/j.addlet.2025.100267","DOIUrl":"10.1016/j.addlet.2025.100267","url":null,"abstract":"<div><div>The demands of high-performance industries such as aerospace, automotive, tool manufacturing, oil, and gas industries are driving the innovation in high-performance materials and their production methods. This study explores the impact of hybrid manufacturing, specifically the effect of the addition of tungsten carbide (WC/W2C) via Laser-Directed Energy Deposition (L-DED), on the hot workability, hardness, and microstructure of nickel-based superalloy Inconel 625 (IN625). IN625 is known for its high temperature and high corrosion resistance, and tungsten carbide for its high wear resistance and grain refinement effect. The integration of WC/W2C particles into the IN625 matrix, in addition to the use of the hybrid approach of additive manufacturing followed by a hot–forming process, significantly influences the microstructure and mechanical behavior of the material. Thus, while incorporation of the WC/W2C can strengthen the material and extend the mechanical limitations, its full impact, including any potential usages, should be thoroughly evaluated for the intended application of the materials. To understand the effect of WC/W2C, additive manufacturing of IN625 both with and without WC/W2C and isothermal hot compression was carried out. The objective is to analyze the differences in microstructure and properties between <span>L</span>-DED manufactured IN625, and WC-reinforced IN625, and their hot-forming behavior, focusing on the effects of WC addition and post-deformation on microstructure and mechanical properties. This work represents the first investigation into the effect of WC/W2C hard particles on the hot-forming process of additively manufactured Ni-based metal matrix composites.</div></div>","PeriodicalId":72068,"journal":{"name":"Additive manufacturing letters","volume":"13 ","pages":"Article 100267"},"PeriodicalIF":4.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0