High-rate laser metal deposition of Inconel 718 component using low heat-input approach

Kong, Cheng; Scudamore, Robert; Allen, Jeffrey

doi:10.1016/j.phpro.2010.08.159

Cited by 30 publications

(18 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results show that the phase patterns of the former three composites have almost no difference with the main phase γ ‐Ni phase, and no other phase is detected. Laser engineered net shaping has the characteristic of rapid solidification, thus some aging precipitations like γ ′‐Ni 3 Al phase and γ ″‐Ni 3 Nb phase are difficult to precipitate during the short period of solidification …”

Section: Experimental Results and Analysismentioning

confidence: 99%

Microstructure and Mechanical Properties of Inconel718–NiCrAlY Composites Prepared by Laser Engineered Net Shaping

et al. 2018

View full text Add to dashboard Cite

Near-defect-free block Inconel718-NiCrAlY composites prepared by laser engineered net shaping are investigated in this study. XRD, SEM, and EDS are applied to analyze the phase composition and microstructure characteristics. The mechanical properties are evaluated by microhardness tester and friction-wear tester. The results show that NiAl brittle intermetallic compounds precipitate in the matrix when NiCrAlY content reaches 60% or more. With the increase of NiCrAlY ratio, the distribution of NiAl changes from intergranular precipitation to intragranular precipitation, and the dendrites growth directions become chaotic. The microhardness of composites improves as the NiCrAlY content rises, reaching to 419 HV for 100% NiCrAlY, and solid solution strengthening has better strengthening effect on microhardness than precipitation strengthening. The wear loss has a clear decrease only when 80% or more NiCrAlY is added, with the maximum wear loss drop of 15.66% for 100%NiCrAlY. The wear mechanisms change from the coexistence of adhesive wear and abrasive wear to mainly abrasive wear with micro brittle fractures when NiCrAlY content is high.

show abstract

Section: Experimental Results and Analysismentioning

confidence: 99%

Microstructure and Mechanical Properties of Inconel718–NiCrAlY Composites Prepared by Laser Engineered Net Shaping

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The DED process is used with different materials and research related to tool steels [28], stainless steels [29], titanium alloys [30], nickel alloys [31], and copper alloys [32] have been already published. Besides, the DED also enables enhancing the surface properties and adapting gradually to the final requirements by means of Functionally Graded Materials [33,34].…”

Section: Fundamentals Of the Ded Processmentioning

confidence: 99%

Study of the Environmental Implications of Using Metal Powder in Additive Manufacturing and Its Handling

Arrizubieta

Ukar

Ostolaza

et al. 2020

Metals

View full text Add to dashboard Cite

Additive Manufacturing, AM, is considered to be environmentally friendly when compared to conventional manufacturing processes. Most researchers focus on resource consumption when performing the corresponding Life Cycle Analysis, LCA, of AM. To that end, the sustainability of AM is compared to processes like milling. Nevertheless, factors such as resource use, pollution, and the effects of AM on human health and society should be also taken into account before determining its environmental impact. In addition, in powder-based AM, handling the powder becomes an issue to be addressed, considering both the operator´s health and the subsequent management of the powder used. In view of these requirements, the fundamentals of the different powder-based AM processes were studied and special attention paid to the health risks derived from the high concentrations of certain chemical compounds existing in the typically employed materials. A review of previous work related to the environmental impact of AM is presented, highlighting the gaps found and the areas where deeper research is required. Finally, the implications of the reuse of metallic powder and the procedures to be followed for the disposal of waste are studied.2 of 25 sold in 2016 was 983, whereas, in the year 2017 this value rose to 1768 units, which implies an 80% increase [1].As far as economy and sustainability are concerned, AM offers several advantages over conventional manufacturing techniques, which confers many potential applications to AM in diverse industrial sectors, such as automotive, aerospace, biomedical, energy, and consumer goods [4]. In the aerospace industry, for example, AM enables aerospace motorists to create blades with much more complex internal cooling channels, allowing engines to run at higher temperatures and thus increase their performance [5]. In the report presented by the National Institute of Standards and Technology (NIST) of the U.S. Department of Commerce, it is stated that in aerospace engines titanium parts are machined down to size from large initial blocks, which leads to more than 90% waste material, material waste that could be reduced by using AM [6]. The European Commission in the Digital Transformation Monitor of 2017 presented similar numbers, where the disruptive nature of 3D printing was studied. It was estimated that by 2050, AM could save up to 90% of the raw material needed for manufacturing [3].Nonetheless, the possibilities of AM are not only limited to a reduction of raw material usage. The possibility of manufacturing lighter components could lead to energy savings, estimated between 5% and 25% by 2050, as well as a reduction in manufacturing costs of around 4-21% for the same period [7]. This trend is applicable to different industrial sectors. For example, SmarTech expects the overall market for AM in automotive to reach 5.3 billion USD in revenues by 2023 and to achieve 12.4 billion USD by 2028 [8].The lack of European and international standardization related to AM is proving to be an impediment to the...

show abstract

“…A wide variety of materials common in several industries have been proven adequate for processing via LMD until now and several authors have worked on the experimental determination of the optimal process parameters for the different materials. Some of them are tool steels [44], stainless steels [45], nickel alloys [46], titanium alloys [47], and copper alloys [48]. In addition, LMD is also suitable for adapting the material properties of certain regions of the part to its final requirements and processing Functionally Graded Materials [49,50].…”

Section: Basis Of the Metal Additive Processesmentioning

confidence: 99%

Latest Developments in Industrial Hybrid Machine Tools that Combine Additive and Subtractive Operations

et al. 2018

View full text Add to dashboard Cite

Hybrid machine tools combining additive and subtractive processes have arisen as a solution to increasing manufacture requirements, boosting the potentials of both technologies, while compensating and minimizing their limitations. Nevertheless, the idea of hybrid machines is relatively new and there is a notable lack of knowledge about the implications arisen from their in-practice use. Therefore, the main goal of the present paper is to fill the existing gap, giving an insight into the current advancements and pending tasks of hybrid machines both from an academic and industrial perspective. To that end, the technical-economical potentials and challenges emerging from their use are identified and critically discussed. In addition, the current situation and future perspectives of hybrid machines from the point of view of process planning, monitoring, and inspection are analyzed. On the one hand, it is found that hybrid machines enable a more efficient use of the resources available, as well as the production of previously unattainable complex parts. On the other hand, it is concluded that there are still some technological challenges derived from the interaction of additive and subtractive processes to be overcome (e.g., process planning, decision planning, use of cutting fluids, and need for a post-processing) before a full implantation of hybrid machines is fulfilled.

show abstract

High-rate laser metal deposition of Inconel 718 component using low heat-input approach

Cited by 30 publications

References 2 publications

Microstructure and Mechanical Properties of Inconel718–NiCrAlY Composites Prepared by Laser Engineered Net Shaping

Microstructure and Mechanical Properties of Inconel718–NiCrAlY Composites Prepared by Laser Engineered Net Shaping

Study of the Environmental Implications of Using Metal Powder in Additive Manufacturing and Its Handling

Latest Developments in Industrial Hybrid Machine Tools that Combine Additive and Subtractive Operations

Contact Info

Product

Resources

About