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Effect of hot isostatic pressing on the microstructure of laser powder bed fused A20XTM alloy 热等静压对激光粉末床熔化 A20XTM 合金微观结构的影响
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012026
J Barode, E Bassini, A Aversa, D Manfredi, D Ugues, S Biamino, M Lombardi, P Fino
{"title":"Effect of hot isostatic pressing on the microstructure of laser powder bed fused A20XTM alloy","authors":"J Barode, E Bassini, A Aversa, D Manfredi, D Ugues, S Biamino, M Lombardi, P Fino","doi":"10.1088/1757-899x/1310/1/012026","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012026","url":null,"abstract":"In the present work, an attempt has been made to do a combined hot isostatic pressing (HIP) &amp; solution treatment in a single-step and the effect of different cooling rates (quenching and annealing) on the microstructure was examined. For a comparison, solution treatment (without HIP) was also analysed. It was observed that HIP treatment was successful in reducing the macro-porosities of the L-PBF part. Although, it was not an efficient treatment for the dissolution of the θ-Al<sub>2</sub>Cu phase. Furthermore, in both HIP-Quenched and HIP-Annealed treatments a sign of incipient melting was observed along the grain boundaries. Solution treatment without HIP did not show incipient melting.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187354","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
Large-scale microstructure modelling of an additively manufactured part using cellular automata 利用蜂窝自动机建立快速成型零件的大规模微观结构模型
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012005
O Zinovieva, A Zinoviev, O Gokcekaya, Y Tang
{"title":"Large-scale microstructure modelling of an additively manufactured part using cellular automata","authors":"O Zinovieva, A Zinoviev, O Gokcekaya, Y Tang","doi":"10.1088/1757-899x/1310/1/012005","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012005","url":null,"abstract":"This study represents the first attempt, to our knowledge, to simulate the grain structure of a laser powder bed fusion printed metal part exceeding 1,000 mm<sup>3</sup> in volume using a workstation. Utilising our in-house cellular automata finite difference code with OpenMP for parallelisation, the model predictions closely align with experimental observations. The implemented model shows promising capabilities for estimating microstructures with reasonable accuracy and could serve as a powerful tool for digital manufacturing.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187493","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
Understanding heterogeneous nucleation and predicting grain size in wire and arc additive manufacturing of steels with inoculation 了解异质成核并预测线材和电弧添加剂制造钢材时的晶粒大小
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012006
Y Xu, G. Tranell, Y Li
{"title":"Understanding heterogeneous nucleation and predicting grain size in wire and arc additive manufacturing of steels with inoculation","authors":"Y Xu, G. Tranell, Y Li","doi":"10.1088/1757-899x/1310/1/012006","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012006","url":null,"abstract":"Inoculation has become a common practice to achieve grain refinement in metal additive manufacturing, and its application in steels has been extensively investigated in recent years. However, the nucleation behavior of equiaxed grains under high temperature gradient and fast cooling rate solidification conditions in additive manufacturing is still not well understood. And grain size prediction models for additive manufacturing of steel is lacking. In this work, a numerical microstructure simulation model is developed to simulate the growth and nucleation behaviors of grains in additive manufacturing, and to predict the grain size of inoculated steels with equiaxed grain structure. Here a wire and arc additive manufacturing (WAAM) of duplex stainless steel is selected for case study. The simulation results are in a good agreement with the experimental results.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187470","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
Cracking Mechanism in E-Beam 3D-Printed DZ125 Ni-based Superalloys 电子束三维打印 DZ125 镍基超合金的裂纹机理
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012031
Z Wang, Y Lin, Y Zhao, F Shangguan, K Chen
{"title":"Cracking Mechanism in E-Beam 3D-Printed DZ125 Ni-based Superalloys","authors":"Z Wang, Y Lin, Y Zhao, F Shangguan, K Chen","doi":"10.1088/1757-899x/1310/1/012031","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012031","url":null,"abstract":"Directionally solidified Ni-based superalloys are extensively employed to manufacture turbine blades due to their outstanding high-temperature mechanical properties. To reduce overall costs, repairing techniques are highly demanded to restored the shape and properties of damaged turbine blades. In this study, as a surrogate for the repair process, DZ125 Ni-based superalloys were grown epitaxially with the electron beam powder bed fusion 3D-printing method on a base metal with the same chemical composition. Cracks are detected within the printed part, always along the high-angle grain boundaries and roughly parallel to the building direction. The cracks are identified to be liquation cracks, and the thermal cycling effects are proved to play an important role in crack initiation and propagation. The knowledge gained from this work provides valuable insights towards 3D-printing strategy development to obtain crack-free directionally solidified superalloys.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187411","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
Backward facing step: from fluid flow to conjugate heat transfer with the coupling library preCICE 后向步骤：利用耦合库 preCICE 从流体流动到共轭传热
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1312/1/012007
C G Caccia, M Corti, A Della Torre, P Masarati
{"title":"Backward facing step: from fluid flow to conjugate heat transfer with the coupling library preCICE","authors":"C G Caccia, M Corti, A Della Torre, P Masarati","doi":"10.1088/1757-899x/1312/1/012007","DOIUrl":"https://doi.org/10.1088/1757-899x/1312/1/012007","url":null,"abstract":"The Backward Facing Step geometry is a widely used benchmark problem in Computational Fluid Dynamics literature that is exploitable to validate models, solution methods, and software implementations. Despite a simple geometry, it shows phenomena like separation, reattachment, and re-circulation zones, under different flow conditions (i.e. different Reynolds number or turbulence parameters) it gives different measurable results, suitable for benchmarking activities [1]. Also regarding heat transfer analysis, the backward facing step can be used to investigate a wide variety of operating conditions (both for simple heat transfer cases and coupling heat transfer between the fluid region and a neighboring solid region giving rise to a more complex conjugate heat transfer model) [2]. This work uses the backward facing step as a test case to validate a numerical model built with the open-source Software OpenFOAM 10. The fluid and solid subdomains are connected through the open-source coupling library preCICE [3]. The results, taken from simulations carried out by the authors, show good agreement with the data available in the literature.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187341","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
The Metallurgy of Additive Manufacturing: Potentials and Challenges towards Industrialisation 增材制造的冶金学：实现工业化的潜力与挑战
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012009
P Mayr, S Rauh, G Matheson, S Rotzsche, S Hartmann, E Kabliman
{"title":"The Metallurgy of Additive Manufacturing: Potentials and Challenges towards Industrialisation","authors":"P Mayr, S Rauh, G Matheson, S Rotzsche, S Hartmann, E Kabliman","doi":"10.1088/1757-899x/1310/1/012009","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012009","url":null,"abstract":"The present paper discusses the potential and challenges of processing metallic materials using additive manufacturing. Particular focus is given to laser powder bed fusion (PBF-LB/M) and the use of traditional alloy powders such as Al alloys and Ni-based superalloys, as well as novel materials such as metal-matrix composites. The research includes the improvement of the processability of these alloys using PBF-LB/M and optimizing material properties such as strength, creep resistance, and thermal conductivity of printed parts for various applications. Another important aspect presented within this manuscript is the digital representation of advanced manufacturing systems to improve manufacturability and enable advanced quality control. Herein, the development of a digital twin through in-situ process monitoring for the direct energy deposition process of laser metal deposition is presented. In the last part, the future of materials development for additive manufacturing is discussed, focusing on applying material computational techniques. All demonstrated examples result from the successful cooperation between the Chair of Materials Engineering of Additive Manufacturing, TUM, and its industrial and research partners.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187463","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
Control of crystallographic textures by metal additive manufacturing-A review 金属增材制造的晶体纹理控制--综述
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012013
Takayoshi Nakano
{"title":"Control of crystallographic textures by metal additive manufacturing-A review","authors":"Takayoshi Nakano","doi":"10.1088/1757-899x/1310/1/012013","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012013","url":null,"abstract":"Metal additive manufacturing (AM), a unique manufacturing method that stacks powder materials layer-by-layer to fabricate products with complex shapes and high precision, allows for a wide range of control over metallurgical microstructures. Metal AM defines solidification units with specific solidification directions and fast cooling, thereby enabling the control of the resulting metallurgical microstructure. However, the studies investigated texture control and utilizing textured microstructure are lacking in the literature. This review describes some of the results of our research on the control of crystallographic textures by laser powder bed fusion (LPBF), focusing on (1) the effect of powder properties on densification and crystallographic texture formation, (2) the effect of the melt pool shape and crystallographic characteristics of the starting material on the formation and orientation of single crystals, and (3) the successful application of alloy design to the preparation of highly functional single-crystalline-like textured biological high-entropy alloys considering specific solidification fields under LPBF.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187467","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 evolution in laser-based powder bed fusion of metals 基于激光的金属粉末床熔融过程中的微观结构演变
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012014
Venkata K Nadimpalli, Tianbo Yu
{"title":"Microstructure evolution in laser-based powder bed fusion of metals","authors":"Venkata K Nadimpalli, Tianbo Yu","doi":"10.1088/1757-899x/1310/1/012014","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012014","url":null,"abstract":"Laser-based powder bed fusion (LPBF) of metals offers the unique possibility of creating the microstructure voxel-by-voxel. The minimum voxel size in each direction is dependent on material dosing accuracy coupled with laser processing parameters. The rapid solidification conditions during LPBF lead to material heterogeneity coupled with hierarchical and non-equilibrium microstructures. The current paper delves into two different pathways available currently to control microstructure in LPBF, namely: in-situ microstructure control through material distribution to form functionally graded components with complex interfaces; application of post-processing thermo-mechanical treatments to control the microstructure. Unlike traditional manufacturing methods, each voxel in LPBF can be further processed multiple times after the first fusion process. Such in-situ processing presents further opportunity for tailoring the microstructure of each voxel in 3D. A future perspective is thus offered on the opportunities to control and engineer LPBF microstructures in metals.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187462","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
Cold spray - a solid-state additive manufacturing technology 冷喷--一种固态添加制造技术
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012044
Congcong Su, Yan Wang, Hanqing Che, Stephen Yue, Xiaoxu Huang
{"title":"Cold spray - a solid-state additive manufacturing technology","authors":"Congcong Su, Yan Wang, Hanqing Che, Stephen Yue, Xiaoxu Huang","doi":"10.1088/1757-899x/1310/1/012044","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012044","url":null,"abstract":"Cold spray is a solid-state powder deposition technique and has evolved into an additive manufacturing process. Unlike conventional additive manufacturing technologies that rely on melting and solidification, cold spray additive manufacturing (CSAM) forms components at low temperatures at a relatively high build rate. This article introduces the technical principles, process parameters and typical microstructure of cold spray, as well as its applications in the fabrication of 3D components and damaged component repair. Current issues faced in cold spray research and future development directions in CSAM are also discussed.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187351","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
Exploring the feasibility of preparing Ti/Ti6Al4V composites by laser powder bed fusion 探索通过激光粉末床熔融制备 Ti/Ti6Al4V 复合材料的可行性
IOP Conference Series: Materials Science and Engineering Pub Date : 2024-08-01 DOI: 10.1088/1757-899x/1310/1/012043
J Shen, Z Pan, V K Nadimpalli, T Yu
{"title":"Exploring the feasibility of preparing Ti/Ti6Al4V composites by laser powder bed fusion","authors":"J Shen, Z Pan, V K Nadimpalli, T Yu","doi":"10.1088/1757-899x/1310/1/012043","DOIUrl":"https://doi.org/10.1088/1757-899x/1310/1/012043","url":null,"abstract":"Ti-based alloys and composites are advanced lightweight materials that are indispensable for many critical applications. This study presents a novel strategy of fabricating laminated plates by printing Ti6Al4V on the surface of pure Ti substrate to obtain a composite structure combining coarse equiaxial and fine acicular grains. The molten pool layer is well bonded to the substrate surface and the chemical composition is rather uniform, due to melting of the substrate surface together with the powders and subsequent solidification. These findings provide a new path for material design, which will broaden the alternatives of structural materials applied in extreme service enviroment.","PeriodicalId":14483,"journal":{"name":"IOP Conference Series: Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142187352","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
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