Tool Wear and Chip Characteristics during Dry Turning of Inconel 825

Thakur, Ajay D.; Mohanty, A.; Gangopadhyay, S.; Maity, Kalipada

doi:10.1016/j.mspro.2014.07.422

Cited by 19 publications

(11 citation statements)

References 16 publications

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“…Due to the retention of their mechanical properties at high-temperature, these superalloys are used in aero space industry and other applications (Thakur et al, 2014). Most of the studies focused on Inconel 718 with respect to different cutting conditions (Aggarwal et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

“…Most of the studies focused on Inconel 718 with respect to different cutting conditions (Aggarwal et al, 2015). However, there are very few reports on machining of Inconel 825 (Thakur et al, 2014). Therefore, Inconel 825 is used as work material for the present study.…”

Section: Resultsmentioning

confidence: 99%

“…Several generations of Inconel series have been developed such as Inconel 600, 601, 718, 800, 825 etc (AKCA and Gursel, 2013). Inconel 825 possesses superior mechanical properties compared to Inconel 718 as it provides better resistance to chloride pitting and corrosion (Thakur et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…Titanium (0.6-1.2%) is added to stabilize the alloy against sensitization in welded condition. High-temperature mechanical strength and high strength to weight ratio of Inconel 825 makes it extensively useful in aero-space industry for manufacturing turbine disks, combustors, blades and casing (Thakur et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Optimization of process parameters for WEDM of Inconel 825 using grey relational analysis

Kumar¹,

Meenu²,

Kumar³

2018

10.5267/j.dsl

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Inconel 825 is high nickel-chromium-based superalloy which retains its mechanical properties and exhibits good corrosion and oxidation resistance at elevated temperature. Inconel 825 is extensively used for making aircraft engine parts like combustor casing and turbine blades in aero space industry. This research proposed the Response Surface Methodology with GRA to optimize multiple responses during Wire-cut EDM of Inconel 825. At optimum combination of input parameters i.e. A4B1C1D5E4F2, increase in MRR from 36.13 mm 2 /min to 41.822 mm 2 /min, decrease in SR from 2.842μm to 2.445μm and decrease in WWR from 0.01832 to 0.01758 was obtained. Experimental results showed that pulse-on time, wire feed, pulse-off time, and peak current significantly affected the MRR, and surface integrity of specimen and electrode with the formation of craters, pockmarks, debris, micro cracks, and recast layer. The optimal parametric combination obtained from the present study will be advantageous for working on high strength; high thermal conductivity and low melting point materials like nickel alloys.. 2018 by the authors; licensee Growing Science, Canada ©

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimization of process parameters for WEDM of Inconel 825 using grey relational analysis

Kumar¹,

Meenu²,

Kumar³

2018

10.5267/j.dsl

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“…Lowest surface roughness and least residual stress were obtained using silicon powder. Thakur et al (2014) investigated the effect of cutting speed and chemical vapour deposition (CVD) multilayer coating on machined surface integrity of Inconel 825 during dry turning. It was observed that increase in cutting speed increased white layer thickness after machining with both uncoated and coated tools.…”

Section: Introductionmentioning

confidence: 99%

Surface integrity analysis of WEDMed specimen of Inconel 825 superalloy

Kumar¹,

Gupta²,

Kumar³

2018

10.5267/j.ijdns

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WEDM has evolved as a well admired technique for machining of difficult to cut materials such as superalloys. WEDM produces intricate shape and profiles of superalloys by thermoelectric erosion process. But as the process is carried out at very high temperature, the formation of heat affected zone, microcracks, recast layer, porosity etc. resulted in decreased surface integrity of machined specimen and becomes a big problem in WEDM. Discharge energy is the most influencing parameters that affect the surface integrity of WEDmed samples. In this study, Inconel 825, widely used in aerospace industry for making of combustor casing and turbine blades, was machined with WEDM under different discharge energy. The surface topography of the WEDMed specimen was carried cut by using SEM, XRD and EDX techniques. It was observed from the SEM micrograph that the machined surface includes cracks, pockmarks, craters, and pulled out material. The density and sice of craters increase with increase in discharge energy. Surface crack density of 0.0138 μm/μm 2 and recast layer thickness of 34.62μm was obtained for the machined sample at high value of discharge energy while at low value surface crack density of 0.0016 μm/μm 2 and recast layer thickness of 20.99μm was observed. EDX and XRD analysis of the specimen showed that an appreciable amount of elements viz. Fe (Ferrous), Cr (Chromium), Cu (Copper), Ni (Nickel) are migrated to the surface of the workpiece at high value of pulse on time.

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