Machinability of the laser additively manufactured Inconel 718 superalloy in turning

Chen, Liyong; Xu, Qingzhong; Liu, Yan; Cai, Gangjun; Liu, Jichen

doi:10.1007/s00170-021-06940-8

Cited by 34 publications

(11 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main measures for machining performance for AM IN718 as identified by table 1 were cutting force, tool wear, chip morphology and surface integrity (roughness and hardness). The cutting forces were lower when machining AM IN718 as compared to wrought under both dry and wet conditions [13,15]. The cutting forces is dependent on the rake angle whereby a zero rake angle would result in the cutting forces being independent of the hardness [23].…”

Section: Machining Performance Measuresmentioning

confidence: 95%

See 1 more Smart Citation

Finish Machining of Additively Manufactured Inconel 718 – A Review

Gunputh

Hama

et al. 2022

Advances in Transdisciplinary Engineering

View full text Add to dashboard Cite

Additive manufacturing (AM) of Inconel 718, IN718, is increasingly being used for the manufacture of complex geometry parts for high temperature applications. However, the low surface integrity and build resolution of as-built AM IN718 parts demands post processing such as machining. This paper reviews the machining of AM IN718 to understand the effect of anisotropic behaviour of the AM part and the hardening post AM treatment on the machinability of the latter. A better understanding on the cutting parameters and machining performance measures such as cutting forces, tool wear, chip morphology and surface integrity of workpiece led to the development of a workplan for future investigation.

show abstract

Section: Machining Performance Measuresmentioning

confidence: 95%

“…The most adopted tool for IN718 in general were cubic boron nitride (CBN), ceramics and coated carbides. Among the different tools that was used for the different cutting coated carbide tool was found to be suitable for the turning of LPBF IN718 due to its longer tool life [22].…”

Section: Finish Machining Of Am In718mentioning

confidence: 99%

Finish Machining of Additively Manufactured Inconel 718 – A Review

Gunputh

Hama

et al. 2022

Advances in Transdisciplinary Engineering

View full text Add to dashboard Cite

show abstract

“…Machinability of DED-LB/Alloy 718 is also investigated in a few studies. Chen et al [134] investigated the tool wear evolution, cutting forces and chip formation when machining Alloy 718 deposited on 304 stainless steel bars (laser cladded), and the results were compared with the wrought material. The cladded and wrought materials both underwent a similar solutionising and ageing treatment according to AMS 5662 standard.…”

Section: Turningmentioning

confidence: 99%

Post-processing of additively manufactured metallic alloys – A review

Malakizadi

Mallipeddi

Dadbakhsh

et al. 2022

International Journal of Machine Tools and Manufacture

View full text Add to dashboard Cite

“…As observed by several authors, machining of AM materials is mainly affected by abrasion and adhesion as the main wear mechanisms [18,20,23]. The review by Bartolomeis et al on machinability of AM alloy 718 generally concluded that the lower hardness and higher ductility together with smaller dimension of the carbides of AM material will promote a reduction of abrasive wear of the cutting tool [24].…”

Section: Introductionmentioning

confidence: 99%

“…In the work by Chen et al the machining performance of PBF-LB and wrought alloy 718 was compared with turning using a coated cemented carbide tool [20]. It was concluded that cutting force and temperature was lower for the PBF-LB material compared to the wrought material.…”

Section: Introductionmentioning

confidence: 99%

Machining of additively manufactured alloy 718 in as-built and heat treated condition: surface integrity and cutting tool wear

Holmberg,

Berglund,

Brohede

et al. 2023

Preprint

View full text Add to dashboard Cite

Additive manufacturing (AM) using powder bed fusion is becoming a mature technology that offers great possibilities and design freedom for manufacturing of near net shape components. However, for many gas turbine and aerospace applications machining is still required, which motivates further research on the machinability and work piece integrity of additive manufactured superalloys. In this work, turning tests has been performed on components made with both Powder Bed Fusion for Laser Beam (PBF-LB) and Electron Beam (PBF-EB) in as-built and heat treated conditions. The two AM processes, and the respective heat treatments, have generated different microstructural features that have great impact on both the tool wear and the work piece surface integrity. The results show that the PBF-EB components have relatively lower geometrical accuracy, a rough surface topography, a coarse microstructure with hard precipitates and low residual stresses after printing. Turning of the PBF-EB material results in high cutting tool wear, which induced moderate tensile surface stresses that are balanced by deep compressive stresses and a superficial deformed surface that is greater for the heat treated material. In comparison, the PBF-LB components have a higher geometrical accuracy, relatively smooth topography and a fine microstructure, but with high tensile stresses after printing. Machining of PBF-LB material resulted in higher tool wear for the heat-treated material, increase of 49%, and significantly higher tensile surface stresses followed by shallower compressive stresses below the surface compared to the PBF-EB materials, but with no superficially deformed surface. It is further observed an 87% higher tool wear for PBF-EB in as-built condition and 43% in the heat treated condition compared to the PBF-LB material. These results show that selection of cutting tool and cutting settings are critical, which requires development of suitable machining parameters that are designed for the microstructure of the material.

show abstract

Machinability of the laser additively manufactured Inconel 718 superalloy in turning

Cited by 34 publications

References 30 publications

Finish Machining of Additively Manufactured Inconel 718 – A Review

Finish Machining of Additively Manufactured Inconel 718 – A Review

Post-processing of additively manufactured metallic alloys – A review

Machining of additively manufactured alloy 718 in as-built and heat treated condition: surface integrity and cutting tool wear

Contact Info

Product

Resources

About