The news reporters obtained a quote from the research, "Scanning electron microscopy indicated a mixed fine-grain and coarse-grain microstructure that was attributed to recrystallization and grain growth during sintering. Analysis of the transmission electron microscopy (TEM) and atom probe tomography (APT) data identified Y-O and Y-O-Ti nanoclusters. Elemental ratios of these nanoclusters were consistent with that observed in hot-extruded ODS alloys. The influence of Ti was to refine the grains as well as the nanoclusters with there being greater number density and smaller sizes of the Y-O-Ti nanoclusters as compared to the Y-O nanoclusters. This resulted in the Ti-containing samples being harder than the Ti-free alloys. The hardness of the alloys with the Y-O-Ti nanoclusters was insensitive to sintering time while smaller hardness values were associated with longer sintering times for the alloys with the Y-O nanoclusters."
According to the news reporters, the research concluded: "Pressures greater than 80 MPa are recommended for improved densification as higher sintering temperatures and longer sintering times at 80 MPa did not improve the relative density beyond 97.5%."
For more information on this research see: Ferritic oxide dispersion strengthened alloys by spark plasma sintering.
Our news correspondents report that additional information may be obtained by contacting
Keywords for this news article include: Alloys,
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC
Most Popular Stories
- Chinese May Have Spotted Malaysia Airlines Debris
- Social Media Causee Sleep Deprivation in Students
- Obama, Ukraine Discuss Russian Incursion in Crimea
- First-time Jobless Claims Drop Unexpectedly
- General Electric Plans IPO of Credit Card Unit
- U.S. Business Inventories Up, Retail Sales Down
- 'Candy Crush' Maker Files IPO
- First-time U.S. Jobless Claims Hit 3-month Low
- Why Buffett Bets Big on Green Energy
- SXSW Crash Kills 2, Injures 23