Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/4116
Title: Development of Nano Y2O3, TiO2, ZrO2 dispersed W-Ni-Nb-Mo alloys by Mechanical
Authors: Khan, A R
Patra, A.
Sahoo, S K
Babu, D. Arvindha
Majumdar, Bhaskar
Keywords: W-Ni-Nb-Mo alloys
ODS
Spark Plasma Sintering
Hardness
Compressive strength
Wear
Issue Date: Nov-2023
Citation: 77th Annual Technical Meeting of Indian Institute of Metals and National Metallurgist Awards (IIM-ATM 2023 & NMA), KIIT Convention Centre, Bhubaneswar, 22-24th November 2023
Abstract: W79Ni10Nb5Mo5 based 1.0 wt.% Y2O3 (alloy A), TiO2 (alloy B), ZrO2 (alloy C) oxide dispersed strengthened (ODS) alloys has been synthesized by mechanical alloying with 10:1 and 5:1 ball to powder weight ratio (BPR) for 20 h. The Spark Plasma Sintering of 20 h milled powders has been carried out at 1100, 1200 °C with 65 MPa pressure and 5 min holding time at the sintering temperature. The effect of various dispersions on microstructure, density, mechanical (micro-hardness, compressive strength) and wear properties has been studied. X-ray diffraction (XRD) analysis reveals the occurrence of intermetallics (NiNb, Ni10Zr7, MoNi) which are responsible for improving the strength of the alloys. Minimum grain size for alloy A sintered at 1100°C at 10:1 BPR is .25 µm while for sample sintered at 1200°C at 10:1 BPR is 0.19 µm. Maximum texture intensity has been achieved in alloy A which contributes enhanced strengthening of the alloy. Maximum % relative sintered density of 98.58% is evaluated for alloy A with 10:1 BPR and at 1200 °C. The maximum hardness, compressive strength and %compressive strain at maximum load of 15.54 GPa, 1.98 GPa, 16.2 % respectively and enhanced wear resistance is achieved in alloy A with 10:1 BPR and 1200 °C sintering temperature.
Description: Copyright belongs to proceeding publisher
URI: http://hdl.handle.net/2080/4116
Appears in Collections:Conference Papers

Files in This Item:
File Description SizeFormat 
2023_ATM-IIM_ASRKhan_Development.pdf4.05 MBAdobe PDFView/Open    Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.