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Mechanical Properties and Microstructure of Al-Sc with Rare-Earth Element or Al2O3 Additions

Description:

Aluminum alloys strengthened with coherent (L1<sub>2</sub>), nanosize Al<sub>3</sub>Sc precipitates may be used as structural materials at elevated temperatures. They are creep resistant at 300°C and exhibit a threshold stress, below which creep is not measurable. Introducing ternary alloying additions, such as rare-earth elements (RE=Y, Dy, Er), that segregate within Al<sub>3</sub>Sc...

Keyword:

mechanical properties, rare-earth elements, precipitation strengthening, creep, precipitate coarsening, and aluminum-scandium alloys

Subject:

Materials Science and Engineering

Creator:

Richard Karnesky

Owner:

Scholarly Digital Publishing

Date Uploaded:

08/27/2018

Date Modified:

08/27/2018

Date Created:

2007-10-24

Resource Type:

Dissertation
Processing and Characterization of Porous Ti-6Al-4V and NiTi

Description:

A series of investigations was undertaken to explore the processing and properties of porous titanium with 6 wt% Al and 4 wt% vanadium (Ti-6Al-4V) and an equiatomic nickel-titanium alloy (NiTi). In this study, porous materials were created in the solid state by entrapping argon in a powder compact, and subsequently...

Keyword:

NiTi, Foam, metal, and creep

Subject:

Materials Science and Engineering

Creator:

Scott M. Oppenheimer

Owner:

Scholarly Digital Publishing

Date Uploaded:

08/27/2018

Date Modified:

08/27/2018

Date Created:

2007-11-19

Resource Type:

Dissertation