This paper reports on the dry erosive wear performance of Inconel 718 clads deposited on SS-304 substrates through microwave hybrid heating technique. Clads were deposited using a domestic microwave applicator at 2·45 GHz and 900 W. The microstructural observations of the Inconel 718 clad indicate good metallurgical bonding with the substrate and revealed no visible interfacial cracking. The microhardness of the clads was assessed using a Vicker's microhardness tester and the average microhardness in the clads was 564±22 HV. Erosive wear performance of the clads was evaluated using an air jet erosion test setup as per ASTM G76 standard. The effect of varying impact angle was studied; the results have been discussed with the help of SEM images of the worn surfaces. It was observed that the improved erosive performance of the Inconel 718 clads was due to presence of strengthening intermetallic phases (Ni3Ti, Ni3Al) in the tough Ni–Fe–Cr matrix.
KwokCT, ManHC and ChengFT: ‘Cavitation erosion and pitting behaviour of laser surface-melted martensitic stainless steel UNS S42000’, Surf. Coat. Technol., 2000, 126, (2–3), 238–255.
2.
SunY and BellT: ‘Dry sliding wear resistance of low temperature plasma carburised austenitic stainless steel’, Wear, 2002, 253, (5–6), 689–693.
3.
ZhouS, ZengX, HuQ and HuangY: ‘Effects of processing parameters on structure of Ni-based WC composites coatings during laser induction hybrid rapid cladding’, Appl. Surf. Sci., 2008, 255, (20), 1646–1653.
4.
RameshCS, SrinivasCK and ChannabasappaBH: ‘Abrasive wear behaviour of laser sintered iron-SiC composites’, Wear, 2009, 267, (11), 1777–1783.
5.
GuptaD and SharmaAK: ‘Investigation on sliding wear performance of WC10Co2Ni cladding developed through microwave irradiation’, Wear, 2011, 271, (9–10), 1642–1650.
6.
ClarkDE and SuttonWH: ‘Microwave processing of materials’, Annu. Rev. Mater. Sci., 1996, 26, 299–331.
7.
ClarkDE, FolzDC and WestJK: ‘Processing materials with microwave energy’, Mater. Sci. Eng. A, 2000, A287, (2), 153–158.
8.
SharmaAK, AravindhanS and KrishnamurthyR: ‘Microwave glazing of alumina-titania ceramic composite coatings’, Mater. Lett., 2001, 50, (5–6), 295–301.
9.
ChengJ, AgrawalD, ZhangY and RoyR: ‘Microwave reactive sintering to fully transparent aluminum oxynitride (ALON) ceramics’, J. Mater. Sci. Lett., 2001, 20, (1), 77–79.
10.
SharmaAK and KrishnamurthyR: ‘Microwave processing of sprayed alumina composite for enhanced performance’, J. Eur. Ceram. Soc., 2002, 22, (16), 2849–2860.
11.
FisherJG, WooSK and BaiK: ‘Microwave reaction bonding of silicon nitride using an inverse temperature gradient and ZrO2 and Al2O3 sintering additives,’J. Eur. Ceram. Soc., 2003, 23, (5), 791–799.
12.
FangCY, RandalCA, LanaganMT and AgrawalDK: ‘Microwave processing of electroceramic materials and devices’, J. Electroceram., 2009, 22, (1–3), 125–130.
13.
LeonelliC, VeronesiP, DentiL, GattoA and IulianoL: ‘Microwave assisted sintering of green metal parts’, J. Mater. Process. Technol., 2008, 205, (1–3), 489–496.
14.
ThostensonET and ChouTW: ‘Microwave processing: fundamentals and applications’, Compos. A, 1999, 30A, (9), 1055–1071.
15.
BykovYV, RybakovKI and SemenovVE: ‘High-temperature microwave processing of materials’, J. Phys. D: Appl. Phys., 2001, 34, (13), R55–R75.
16.
SharmaAK, SrinathMS and KumarP: ‘Microwave joining of metallic materials’, Indian Patent, Application no. 1994/Del/2009, filed September 24, 2009.
17.
SharmaAK and GuptaD: ‘A method of cladding/coating of metallic and non- metallic Powders on metallic substrates by microwave irradiation’, Indian Patent, Application no. 527/Del/2010, filed March 09, 2010.
18.
GuptaD and SharmaAK: ‘Development and microstructural characterization of microwave cladding on austenitic stainless steel’, Surf. Coat. Technol., 2011, 205, (21–22), 5147–5155.
19.
GuptaD and SharmaAK: ‘Microstructural characterisation of cermet cladding developed through microwave irradiation’, J. Mater. Eng. Perform., 2012, 21, (10), 2165–2172.
20.
SharmaAK and GuptaD: ‘On microstructure and flexural strength of metal-ceramic composite cladding developed through microwave heating’, Appl. Surf. Sci., 2012, 258, (15), 5583–5592.
21.
PereiraJM and LerchBA: ‘Effect of heat treatment on ballistic impact properties of Inconel 718 for jet engine fan containment’, Int. J. Impact Eng., 2001, 25, (8), 715–733.
22.
PottlacherG, HosaeusH, WilthanB, KaschnitzE and SeifterA: ‘Thermophysical properties of solid and liquid Inconel-718’, Thermochim. Acta, 2002, 382, (1–2), 255–267.
23.
RameshCS, DevarajDS, KeshavamurthyR and SridharBR: ‘Slurry erosive wear behaviour of thermally sprayed Inconel-718 coatings by APS process’, Wear, 2011, 271, 1365–1371.
24.
Al-FadhliHY, StokesJ, HashmiMSJ and YilbasBS: ‘The erosion-corrosion behaviour of high velocity oxy-fuel (HVOF) thermally sprayed Inconel-625 coatings on different metallic surfaces’, Surf. Coat. Technol., 2006, 200, 5782–5788.
25.
VerdiD, GarridoMA, MúnezCJ and PozaP: ‘Mechanical properties of Inconel 625 laser cladded coatings: depth sensing indentation analysis’, Mater. Sci. Eng. A, 2014, A598, 15–21.
26.
MondalA, ShuklaA, UpadhyayaA and AgrawalD: ‘Effect of porosity and particle size on microwave heating of copper’, Sci. Sinter., 2010, 42, 169–182.
27.
ZafarS, SharmaAK and AroraN: ‘Development and microstructural characterisation of Inconel cladding on stainless steel through microwave irradiation’, JME, 2013, 3, (1), 9–16.
28.
OghbaeiM and MirzaeeO: ‘Microwave versus conventional sintering: a review of fundamentals, advantages and applications’, J. Alloys Compd, 2010, 494, (1–2), 175–189.
29.
TabakoffW: ‘Protection of coated superalloys from erosion in turbomachinery and other systems exposed to particulate flows’, Wear, 1999, 233, 200–208.
30.
FinnieI: ‘Erosion of surfaces by solid particles’, Wear, 1960, 3, (2), 87–103.
