Effect of plain strain deformation on grain strengthening mechanism of Fe-Al2O3 metal matrix nanocomposites. (January 2021)

• Record Type: Journal Article
• Authors: Gupta, Vinod Kumar; Harshit, Kumar; Jha, Arun Kant; Kumar, Devendra; Sadasivuni, Kishor Kumar; Gupta, Pallav
• Is Part Of: Journal of composite materials. Volume 55:Number 2(2021)
• Page Start: 291
• Page End: 302
• Publication Date: 2021-01
• Subjects: Metal matrix nanocomposites -- Powder metallurgy -- X-ray diffraction -- Mechanical behavior -- Scanning electron microscopy; Composite materials -- Periodicals; Composites -- Périodiques; 620.118
• DOI: 10.1177/0021998320948938
• Languages: English
• ISSNs: 0021-9983

Abstract

The present paper reports the effect of plain strain deformation on grain strengthening mechanism of iron (Fe) - alumina (Al2 O3 ) Metal Matrix Nanocomposites (MMNCs) fabricated through powder metallurgical (P/M) processing. Specimens for the present study were weighed in required amount, ball milled, compacted at a load of 5, 6 and 7 tons followed by sintering in an atmospheric controlled furnace at 1100 °C for 1 hour. Plain strain deformation of samples was carried out at a load of 5 tons under different interfacial condition i.e. dry, solid lubricant and liquid lubricant. XRD studies reveal the formation of iron, alumina and nano iron-aluminate (FeAl2 O4 ) phases respectively. Maximum average sintered density investigated for the specimen is found to be 4.6179 gm/cc compacted under 7 tons of load and minimum sintered density is found to be 4.4572 gm/cc for specimen compacted under 5 tons of load. Overall, fabricated Fe-Al2 O3 metal matrix nanocomposites with powder metallurgy route when characterized for plain strain deformation shows strengthening between grain and grain boundary which can be a good candidate material for application in railways especially while designing railway structures and tracks.