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Effect of Zirconium on the Microstructure and Mechanical Properties of an Al‐Alloyed ODS Steel Consolidated by FAHP
Author(s) -
GarcíaJunceda Andrea,
GarcíaRodríguez Nerea,
Campos Mónica,
CartónCordero Marta,
Torralba José Manuel
Publication year - 2015
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13691
Subject(s) - microstructure , materials science , equiaxed crystals , metallurgy , zirconium , cubic zirconia , alloy , consolidation (business) , hot isostatic pressing , volume fraction , oxide , composite material , ceramic , business , accounting
An oxide dispersion strengthened ( ODS ) ferritic steel with nominal composition Fe‐14Cr‐5Al‐3W‐0.4Ti‐0.25Y 2 O 3 ‐0.6ZrO 2 was produced by mechanical alloying ( MA ), based on a prealloyed grade Fe‐14Cr‐5Al‐3W steel with the addition of Ti element, Y 2 O 3 and ZrO 2 , and subsequent consolidation by means of field assisted hot pressing ( FAHP ). The microstructure and the mechanical properties were analyzed and compared with a reference material with nominal composition Fe‐14Cr‐5Al‐3W‐0.4Ti‐0.25Y 2 O 3 . The addition of zirconia increased the volume fraction of the smallest and equiaxed ferritic nano‐grains and decreased the quantity of larger aluminum nano‐oxides within the ferritic matrix, promoting the formation of fine zirconium nano‐oxides and leading to the enhancement of the mechanical properties of the alloy.